diff --git a/Cargo.lock b/Cargo.lock
index ac36c5654..94e2c9cde 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -67,9 +67,9 @@ checksum = "55cc3b69f167a1ef2e161439aa98aed94e6028e5f9a59be9a6ffb47aef1651f9"
 
 [[package]]
 name = "anyhow"
-version = "1.0.92"
+version = "1.0.93"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "74f37166d7d48a0284b99dd824694c26119c700b53bf0d1540cdb147dbdaaf13"
+checksum = "4c95c10ba0b00a02636238b814946408b1322d5ac4760326e6fb8ec956d85775"
 
 [[package]]
 name = "arrayref"
@@ -140,9 +140,9 @@ checksum = "ace50bade8e6234aa140d9a2f552bbee1db4d353f69b8217bc503490fc1a9f26"
 
 [[package]]
 name = "axum"
-version = "0.7.7"
+version = "0.7.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "504e3947307ac8326a5437504c517c4b56716c9d98fac0028c2acc7ca47d70ae"
+checksum = "edca88bc138befd0323b20752846e6587272d3b03b0343c8ea28a6f819e6e71f"
 dependencies = [
  "async-trait",
  "axum-core",
@@ -164,7 +164,7 @@ dependencies = [
  "serde_json",
  "serde_path_to_error",
  "serde_urlencoded",
- "sync_wrapper 1.0.1",
+ "sync_wrapper 1.0.2",
  "tokio",
  "tower 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "tower-layer 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -187,7 +187,7 @@ dependencies = [
  "mime",
  "pin-project-lite",
  "rustversion",
- "sync_wrapper 1.0.1",
+ "sync_wrapper 1.0.2",
  "tower-layer 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "tower-service 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "tracing",
@@ -277,9 +277,9 @@ dependencies = [
 
 [[package]]
 name = "blake3"
-version = "1.5.4"
+version = "1.5.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d82033247fd8e890df8f740e407ad4d038debb9eb1f40533fffb32e7d17dc6f7"
+checksum = "b8ee0c1824c4dea5b5f81736aff91bae041d2c07ee1192bec91054e10e3e601e"
 dependencies = [
  "arrayref",
  "arrayvec",
@@ -299,9 +299,9 @@ dependencies = [
 
 [[package]]
 name = "borsh"
-version = "1.5.1"
+version = "1.5.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a6362ed55def622cddc70a4746a68554d7b687713770de539e59a739b249f8ed"
+checksum = "2506947f73ad44e344215ccd6403ac2ae18cd8e046e581a441bf8d199f257f03"
 dependencies = [
  "borsh-derive",
  "cfg_aliases",
@@ -309,16 +309,15 @@ dependencies = [
 
 [[package]]
 name = "borsh-derive"
-version = "1.5.1"
+version = "1.5.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c3ef8005764f53cd4dca619f5bf64cafd4664dada50ece25e4d81de54c80cc0b"
+checksum = "c2593a3b8b938bd68373196c9832f516be11fa487ef4ae745eb282e6a56a7244"
 dependencies = [
  "once_cell",
  "proc-macro-crate",
  "proc-macro2",
  "quote",
  "syn",
- "syn_derive",
 ]
 
 [[package]]
@@ -329,9 +328,9 @@ checksum = "79296716171880943b8470b5f8d03aa55eb2e645a4874bdbb28adb49162e012c"
 
 [[package]]
 name = "bytemuck"
-version = "1.19.0"
+version = "1.20.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8334215b81e418a0a7bdb8ef0849474f40bb10c8b71f1c4ed315cff49f32494d"
+checksum = "8b37c88a63ffd85d15b406896cc343916d7cf57838a847b3a6f2ca5d39a5695a"
 dependencies = [
  "bytemuck_derive",
 ]
@@ -370,9 +369,9 @@ checksum = "37b2a672a2cb129a2e41c10b1224bb368f9f37a2b16b612598138befd7b37eb5"
 
 [[package]]
 name = "cc"
-version = "1.1.31"
+version = "1.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c2e7962b54006dcfcc61cb72735f4d89bb97061dd6a7ed882ec6b8ee53714c6f"
+checksum = "fd9de9f2205d5ef3fd67e685b0df337994ddd4495e2a28d185500d0e1edfea47"
 dependencies = [
  "shlex",
 ]
@@ -430,9 +429,9 @@ dependencies = [
 
 [[package]]
 name = "clap"
-version = "4.5.20"
+version = "4.5.21"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b97f376d85a664d5837dbae44bf546e6477a679ff6610010f17276f686d867e8"
+checksum = "fb3b4b9e5a7c7514dfa52869339ee98b3156b0bfb4e8a77c4ff4babb64b1604f"
 dependencies = [
  "clap_builder",
  "clap_derive",
@@ -440,9 +439,9 @@ dependencies = [
 
 [[package]]
 name = "clap_builder"
-version = "4.5.20"
+version = "4.5.21"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "19bc80abd44e4bed93ca373a0704ccbd1b710dc5749406201bb018272808dc54"
+checksum = "b17a95aa67cc7b5ebd32aa5370189aa0d79069ef1c64ce893bd30fb24bff20ec"
 dependencies = [
  "anstyle",
  "clap_lex",
@@ -462,9 +461,9 @@ dependencies = [
 
 [[package]]
 name = "clap_lex"
-version = "0.7.2"
+version = "0.7.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1462739cb27611015575c0c11df5df7601141071f07518d56fcc1be504cbec97"
+checksum = "afb84c814227b90d6895e01398aee0d8033c00e7466aca416fb6a8e0eb19d8a7"
 
 [[package]]
 name = "const_format"
@@ -494,9 +493,9 @@ checksum = "7c74b8349d32d297c9134b8c88677813a227df8f779daa29bfc29c183fe3dca6"
 
 [[package]]
 name = "core-foundation"
-version = "0.9.4"
+version = "0.10.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "91e195e091a93c46f7102ec7818a2aa394e1e1771c3ab4825963fa03e45afb8f"
+checksum = "b55271e5c8c478ad3f38ad24ef34923091e0548492a266d19b3c0b4d82574c63"
 dependencies = [
  "core-foundation-sys",
  "libc",
@@ -510,9 +509,9 @@ checksum = "773648b94d0e5d620f64f280777445740e61fe701025087ec8b57f45c791888b"
 
 [[package]]
 name = "cpufeatures"
-version = "0.2.14"
+version = "0.2.16"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "608697df725056feaccfa42cffdaeeec3fccc4ffc38358ecd19b243e716a78e0"
+checksum = "16b80225097f2e5ae4e7179dd2266824648f3e2f49d9134d584b76389d31c4c3"
 dependencies = [
  "libc",
 ]
@@ -808,6 +807,19 @@ dependencies = [
  "serde_json",
 ]
 
+[[package]]
+name = "cuprate-criterion-helper"
+version = "0.0.0"
+dependencies = [
+ "criterion",
+ "cuprate-constants",
+ "cuprate-helper",
+ "cuprate-test-utils",
+ "function_name",
+ "monero-serai",
+ "serde_json",
+]
+
 [[package]]
 name = "cuprate-criterion-json-rpc"
 version = "0.0.0"
@@ -1345,6 +1357,17 @@ dependencies = [
  "windows-sys 0.48.0",
 ]
 
+[[package]]
+name = "displaydoc"
+version = "0.2.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "97369cbbc041bc366949bc74d34658d6cda5621039731c6310521892a3a20ae0"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
 [[package]]
 name = "doxygen-rs"
 version = "0.4.2"
@@ -1378,9 +1401,9 @@ dependencies = [
 
 [[package]]
 name = "fastrand"
-version = "2.1.1"
+version = "2.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e8c02a5121d4ea3eb16a80748c74f5549a5665e4c21333c6098f283870fbdea6"
+checksum = "486f806e73c5707928240ddc295403b1b93c96a02038563881c4a2fd84b81ac4"
 
 [[package]]
 name = "ff"
@@ -1401,9 +1424,9 @@ checksum = "28dea519a9695b9977216879a3ebfddf92f1c08c05d984f8996aecd6ecdc811d"
 
 [[package]]
 name = "flate2"
-version = "1.0.34"
+version = "1.0.35"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a1b589b4dc103969ad3cf85c950899926ec64300a1a46d76c03a6072957036f0"
+checksum = "c936bfdafb507ebbf50b8074c54fa31c5be9a1e7e5f467dd659697041407d07c"
 dependencies = [
  "crc32fast",
  "miniz_oxide",
@@ -1584,9 +1607,9 @@ dependencies = [
 
 [[package]]
 name = "h2"
-version = "0.4.6"
+version = "0.4.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "524e8ac6999421f49a846c2d4411f337e53497d8ec55d67753beffa43c5d9205"
+checksum = "ccae279728d634d083c00f6099cb58f01cc99c145b84b8be2f6c74618d79922e"
 dependencies = [
  "atomic-waker",
  "bytes",
@@ -1622,9 +1645,9 @@ dependencies = [
 
 [[package]]
 name = "hashbrown"
-version = "0.15.0"
+version = "0.15.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1e087f84d4f86bf4b218b927129862374b72199ae7d8657835f1e89000eea4fb"
+checksum = "bf151400ff0baff5465007dd2f3e717f3fe502074ca563069ce3a6629d07b289"
 
 [[package]]
 name = "heck"
@@ -1676,6 +1699,12 @@ version = "0.3.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d231dfb89cfffdbc30e7fc41579ed6066ad03abda9e567ccafae602b97ec5024"
 
+[[package]]
+name = "hermit-abi"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fbf6a919d6cf397374f7dfeeea91d974c7c0a7221d0d0f4f20d859d329e53fcc"
+
 [[package]]
 name = "hex"
 version = "0.4.3"
@@ -1739,9 +1768,9 @@ checksum = "df3b46402a9d5adb4c86a0cf463f42e19994e3ee891101b1841f30a545cb49a9"
 
 [[package]]
 name = "hyper"
-version = "1.5.0"
+version = "1.5.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bbbff0a806a4728c99295b254c8838933b5b082d75e3cb70c8dab21fdfbcfa9a"
+checksum = "97818827ef4f364230e16705d4706e2897df2bb60617d6ca15d598025a3c481f"
 dependencies = [
  "bytes",
  "futures-channel",
@@ -1818,14 +1847,143 @@ dependencies = [
  "cc",
 ]
 
+[[package]]
+name = "icu_collections"
+version = "1.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "db2fa452206ebee18c4b5c2274dbf1de17008e874b4dc4f0aea9d01ca79e4526"
+dependencies = [
+ "displaydoc",
+ "yoke",
+ "zerofrom",
+ "zerovec",
+]
+
+[[package]]
+name = "icu_locid"
+version = "1.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "13acbb8371917fc971be86fc8057c41a64b521c184808a698c02acc242dbf637"
+dependencies = [
+ "displaydoc",
+ "litemap",
+ "tinystr",
+ "writeable",
+ "zerovec",
+]
+
+[[package]]
+name = "icu_locid_transform"
+version = "1.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "01d11ac35de8e40fdeda00d9e1e9d92525f3f9d887cdd7aa81d727596788b54e"
+dependencies = [
+ "displaydoc",
+ "icu_locid",
+ "icu_locid_transform_data",
+ "icu_provider",
+ "tinystr",
+ "zerovec",
+]
+
+[[package]]
+name = "icu_locid_transform_data"
+version = "1.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fdc8ff3388f852bede6b579ad4e978ab004f139284d7b28715f773507b946f6e"
+
+[[package]]
+name = "icu_normalizer"
+version = "1.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "19ce3e0da2ec68599d193c93d088142efd7f9c5d6fc9b803774855747dc6a84f"
+dependencies = [
+ "displaydoc",
+ "icu_collections",
+ "icu_normalizer_data",
+ "icu_properties",
+ "icu_provider",
+ "smallvec",
+ "utf16_iter",
+ "utf8_iter",
+ "write16",
+ "zerovec",
+]
+
+[[package]]
+name = "icu_normalizer_data"
+version = "1.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f8cafbf7aa791e9b22bec55a167906f9e1215fd475cd22adfcf660e03e989516"
+
+[[package]]
+name = "icu_properties"
+version = "1.5.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "93d6020766cfc6302c15dbbc9c8778c37e62c14427cb7f6e601d849e092aeef5"
+dependencies = [
+ "displaydoc",
+ "icu_collections",
+ "icu_locid_transform",
+ "icu_properties_data",
+ "icu_provider",
+ "tinystr",
+ "zerovec",
+]
+
+[[package]]
+name = "icu_properties_data"
+version = "1.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "67a8effbc3dd3e4ba1afa8ad918d5684b8868b3b26500753effea8d2eed19569"
+
+[[package]]
+name = "icu_provider"
+version = "1.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6ed421c8a8ef78d3e2dbc98a973be2f3770cb42b606e3ab18d6237c4dfde68d9"
+dependencies = [
+ "displaydoc",
+ "icu_locid",
+ "icu_provider_macros",
+ "stable_deref_trait",
+ "tinystr",
+ "writeable",
+ "yoke",
+ "zerofrom",
+ "zerovec",
+]
+
+[[package]]
+name = "icu_provider_macros"
+version = "1.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1ec89e9337638ecdc08744df490b221a7399bf8d164eb52a665454e60e075ad6"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
 [[package]]
 name = "idna"
-version = "0.5.0"
+version = "1.0.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "686f825264d630750a544639377bae737628043f20d38bbc029e8f29ea968a7e"
+dependencies = [
+ "idna_adapter",
+ "smallvec",
+ "utf8_iter",
+]
+
+[[package]]
+name = "idna_adapter"
+version = "1.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "634d9b1461af396cad843f47fdba5597a4f9e6ddd4bfb6ff5d85028c25cb12f6"
+checksum = "daca1df1c957320b2cf139ac61e7bd64fed304c5040df000a745aa1de3b4ef71"
 dependencies = [
- "unicode-bidi",
- "unicode-normalization",
+ "icu_normalizer",
+ "icu_properties",
 ]
 
 [[package]]
@@ -1835,16 +1993,16 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "707907fe3c25f5424cce2cb7e1cbcafee6bdbe735ca90ef77c29e84591e5b9da"
 dependencies = [
  "equivalent",
- "hashbrown 0.15.0",
+ "hashbrown 0.15.2",
 ]
 
 [[package]]
 name = "is-terminal"
-version = "0.4.12"
+version = "0.4.13"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f23ff5ef2b80d608d61efee834934d862cd92461afc0560dedf493e4c033738b"
+checksum = "261f68e344040fbd0edea105bef17c66edf46f984ddb1115b775ce31be948f4b"
 dependencies = [
- "hermit-abi",
+ "hermit-abi 0.4.0",
  "libc",
  "windows-sys 0.52.0",
 ]
@@ -1860,9 +2018,9 @@ dependencies = [
 
 [[package]]
 name = "itoa"
-version = "1.0.11"
+version = "1.0.14"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "49f1f14873335454500d59611f1cf4a4b0f786f9ac11f4312a78e4cf2566695b"
+checksum = "d75a2a4b1b190afb6f5425f10f6a8f959d2ea0b9c2b1d79553551850539e4674"
 
 [[package]]
 name = "jh"
@@ -1901,9 +2059,9 @@ checksum = "bbd2bcb4c963f2ddae06a2efc7e9f3591312473c50c6685e1f298068316e66fe"
 
 [[package]]
 name = "libc"
-version = "0.2.161"
+version = "0.2.166"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8e9489c2807c139ffd9c1794f4af0ebe86a828db53ecdc7fea2111d0fed085d1"
+checksum = "c2ccc108bbc0b1331bd061864e7cd823c0cab660bbe6970e66e2c0614decde36"
 
 [[package]]
 name = "libm"
@@ -1927,6 +2085,12 @@ version = "0.4.14"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "78b3ae25bc7c8c38cec158d1f2757ee79e9b3740fbc7ccf0e59e4b08d793fa89"
 
+[[package]]
+name = "litemap"
+version = "0.7.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4ee93343901ab17bd981295f2cf0026d4ad018c7c31ba84549a4ddbb47a45104"
+
 [[package]]
 name = "lmdb-master-sys"
 version = "0.2.4"
@@ -2018,7 +2182,7 @@ version = "1.0.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "80e04d1dcff3aae0704555fe5fee3bcfaf3d1fdf8a7e521d5b9d2b42acb52cec"
 dependencies = [
- "hermit-abi",
+ "hermit-abi 0.3.9",
  "libc",
  "wasi",
  "windows-sys 0.52.0",
@@ -2220,9 +2384,9 @@ checksum = "1261fe7e33c73b354eab43b1273a57c8f967d0391e80353e51f764ac02cf6775"
 
 [[package]]
 name = "oorandom"
-version = "11.1.3"
+version = "11.1.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0ab1bc2a289d34bd04a330323ac98a1b4bc82c9d9fcb1e66b63caa84da26b575"
+checksum = "b410bbe7e14ab526a0e86877eb47c6996a2bd7746f027ba551028c925390e4e9"
 
 [[package]]
 name = "openssl-probe"
@@ -2363,9 +2527,9 @@ checksum = "8b870d8c151b6f2fb93e84a13146138f05d02ed11c7e7c54f8826aaaf7c9f184"
 
 [[package]]
 name = "plotters"
-version = "0.3.6"
+version = "0.3.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a15b6eccb8484002195a3e44fe65a4ce8e93a625797a063735536fd59cb01cf3"
+checksum = "5aeb6f403d7a4911efb1e33402027fc44f29b5bf6def3effcc22d7bb75f2b747"
 dependencies = [
  "num-traits",
  "plotters-backend",
@@ -2376,15 +2540,15 @@ dependencies = [
 
 [[package]]
 name = "plotters-backend"
-version = "0.3.6"
+version = "0.3.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "414cec62c6634ae900ea1c56128dfe87cf63e7caece0852ec76aba307cebadb7"
+checksum = "df42e13c12958a16b3f7f4386b9ab1f3e7933914ecea48da7139435263a4172a"
 
 [[package]]
 name = "plotters-svg"
-version = "0.3.6"
+version = "0.3.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "81b30686a7d9c3e010b84284bdd26a29f2138574f52f5eb6f794fc0ad924e705"
+checksum = "51bae2ac328883f7acdfea3d66a7c35751187f870bc81f94563733a154d7a670"
 dependencies = [
  "plotters-backend",
 ]
@@ -2417,34 +2581,11 @@ dependencies = [
  "toml_edit",
 ]
 
-[[package]]
-name = "proc-macro-error"
-version = "1.0.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "da25490ff9892aab3fcf7c36f08cfb902dd3e71ca0f9f9517bea02a73a5ce38c"
-dependencies = [
- "proc-macro-error-attr",
- "proc-macro2",
- "quote",
- "version_check",
-]
-
-[[package]]
-name = "proc-macro-error-attr"
-version = "1.0.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a1be40180e52ecc98ad80b184934baf3d0d29f979574e439af5a55274b35f869"
-dependencies = [
- "proc-macro2",
- "quote",
- "version_check",
-]
-
 [[package]]
 name = "proc-macro2"
-version = "1.0.89"
+version = "1.0.92"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f139b0662de085916d1fb67d2b4169d1addddda1919e696f3252b740b629986e"
+checksum = "37d3544b3f2748c54e147655edb5025752e2303145b5aefb3c3ea2c78b973bb0"
 dependencies = [
  "unicode-ident",
 ]
@@ -2631,13 +2772,13 @@ dependencies = [
 
 [[package]]
 name = "regex"
-version = "1.10.5"
+version = "1.11.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b91213439dad192326a0d7c6ee3955910425f441d7038e0d6933b0aec5c4517f"
+checksum = "b544ef1b4eac5dc2db33ea63606ae9ffcfac26c1416a2806ae0bf5f56b201191"
 dependencies = [
  "aho-corasick",
  "memchr",
- "regex-automata 0.4.7",
+ "regex-automata 0.4.9",
  "regex-syntax 0.8.5",
 ]
 
@@ -2652,9 +2793,9 @@ dependencies = [
 
 [[package]]
 name = "regex-automata"
-version = "0.4.7"
+version = "0.4.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "38caf58cc5ef2fed281f89292ef23f6365465ed9a41b7a7754eb4e26496c92df"
+checksum = "809e8dc61f6de73b46c85f4c96486310fe304c434cfa43669d7b40f711150908"
 dependencies = [
  "aho-corasick",
  "memchr",
@@ -2705,9 +2846,9 @@ dependencies = [
 
 [[package]]
 name = "rustix"
-version = "0.38.38"
+version = "0.38.41"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "aa260229e6538e52293eeb577aabd09945a09d6d9cc0fc550ed7529056c2e32a"
+checksum = "d7f649912bc1495e167a6edee79151c84b1bad49748cb4f1f1167f459f6224f6"
 dependencies = [
  "bitflags 2.6.0",
  "errno",
@@ -2718,9 +2859,9 @@ dependencies = [
 
 [[package]]
 name = "rustls"
-version = "0.23.16"
+version = "0.23.19"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "eee87ff5d9b36712a58574e12e9f0ea80f915a5b0ac518d322b24a465617925e"
+checksum = "934b404430bb06b3fae2cba809eb45a1ab1aecd64491213d7c3301b88393f8d1"
 dependencies = [
  "log",
  "once_cell",
@@ -2733,26 +2874,16 @@ dependencies = [
 
 [[package]]
 name = "rustls-native-certs"
-version = "0.8.0"
+version = "0.8.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fcaf18a4f2be7326cd874a5fa579fae794320a0f388d365dca7e480e55f83f8a"
+checksum = "7fcff2dd52b58a8d98a70243663a0d234c4e2b79235637849d15913394a247d3"
 dependencies = [
  "openssl-probe",
- "rustls-pemfile",
  "rustls-pki-types",
  "schannel",
  "security-framework",
 ]
 
-[[package]]
-name = "rustls-pemfile"
-version = "2.2.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "dce314e5fee3f39953d46bb63bb8a46d40c2f8fb7cc5a3b6cab2bde9721d6e50"
-dependencies = [
- "rustls-pki-types",
-]
-
 [[package]]
 name = "rustls-pki-types"
 version = "1.10.0"
@@ -2805,9 +2936,9 @@ dependencies = [
 
 [[package]]
 name = "schannel"
-version = "0.1.26"
+version = "0.1.27"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "01227be5826fa0690321a2ba6c5cd57a19cf3f6a09e76973b58e61de6ab9d1c1"
+checksum = "1f29ebaa345f945cec9fbbc532eb307f0fdad8161f281b6369539c8d84876b3d"
 dependencies = [
  "windows-sys 0.59.0",
 ]
@@ -2820,9 +2951,9 @@ checksum = "94143f37725109f92c262ed2cf5e59bce7498c01bcc1502d7b9afe439a4e9f49"
 
 [[package]]
 name = "security-framework"
-version = "2.11.1"
+version = "3.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "897b2245f0b511c87893af39b033e5ca9cce68824c4d7e7630b5a1d339658d02"
+checksum = "e1415a607e92bec364ea2cf9264646dcce0f91e6d65281bd6f2819cca3bf39c8"
 dependencies = [
  "bitflags 2.6.0",
  "core-foundation",
@@ -2833,9 +2964,9 @@ dependencies = [
 
 [[package]]
 name = "security-framework-sys"
-version = "2.12.0"
+version = "2.12.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ea4a292869320c0272d7bc55a5a6aafaff59b4f63404a003887b679a2e05b4b6"
+checksum = "fa39c7303dc58b5543c94d22c1766b0d31f2ee58306363ea622b10bbc075eaa2"
 dependencies = [
  "core-foundation-sys",
  "libc",
@@ -2855,9 +2986,9 @@ checksum = "a3f0bf26fd526d2a95683cd0f87bf103b8539e2ca1ef48ce002d67aad59aa0b4"
 
 [[package]]
 name = "serde"
-version = "1.0.214"
+version = "1.0.215"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f55c3193aca71c12ad7890f1785d2b73e1b9f63a0bbc353c08ef26fe03fc56b5"
+checksum = "6513c1ad0b11a9376da888e3e0baa0077f1aed55c17f50e7b2397136129fb88f"
 dependencies = [
  "serde_derive",
 ]
@@ -2873,9 +3004,9 @@ dependencies = [
 
 [[package]]
 name = "serde_derive"
-version = "1.0.214"
+version = "1.0.215"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "de523f781f095e28fa605cdce0f8307e451cc0fd14e2eb4cd2e98a355b147766"
+checksum = "ad1e866f866923f252f05c889987993144fb74e722403468a4ebd70c3cd756c0"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -2884,9 +3015,9 @@ dependencies = [
 
 [[package]]
 name = "serde_json"
-version = "1.0.132"
+version = "1.0.133"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d726bfaff4b320266d395898905d0eba0345aae23b54aee3a737e260fd46db03"
+checksum = "c7fceb2473b9166b2294ef05efcb65a3db80803f0b03ef86a5fc88a2b85ee377"
 dependencies = [
  "itoa",
  "memchr",
@@ -3021,6 +3152,12 @@ version = "0.9.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "6980e8d7511241f8acf4aebddbb1ff938df5eebe98691418c4468d0b72a96a67"
 
+[[package]]
+name = "stable_deref_trait"
+version = "1.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a8f112729512f8e442d81f95a8a7ddf2b7c6b8a1a6f509a95864142b30cab2d3"
+
 [[package]]
 name = "std-shims"
 version = "0.1.1"
@@ -3060,27 +3197,15 @@ checksum = "13c2bddecc57b384dee18652358fb23172facb8a2c51ccc10d74c157bdea3292"
 
 [[package]]
 name = "syn"
-version = "2.0.86"
+version = "2.0.89"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e89275301d38033efb81a6e60e3497e734dfcc62571f2854bf4b16690398824c"
+checksum = "44d46482f1c1c87acd84dea20c1bf5ebff4c757009ed6bf19cfd36fb10e92c4e"
 dependencies = [
  "proc-macro2",
  "quote",
  "unicode-ident",
 ]
 
-[[package]]
-name = "syn_derive"
-version = "0.1.8"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1329189c02ff984e9736652b1631330da25eaa6bc639089ed4915d25446cbe7b"
-dependencies = [
- "proc-macro-error",
- "proc-macro2",
- "quote",
- "syn",
-]
-
 [[package]]
 name = "sync_wrapper"
 version = "0.1.2"
@@ -3089,9 +3214,9 @@ checksum = "2047c6ded9c721764247e62cd3b03c09ffc529b2ba5b10ec482ae507a4a70160"
 
 [[package]]
 name = "sync_wrapper"
-version = "1.0.1"
+version = "1.0.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a7065abeca94b6a8a577f9bd45aa0867a2238b74e8eb67cf10d492bc39351394"
+checksum = "0bf256ce5efdfa370213c1dabab5935a12e49f2c58d15e9eac2870d3b4f27263"
 
 [[package]]
 name = "synchronoise"
@@ -3102,6 +3227,17 @@ dependencies = [
  "crossbeam-queue",
 ]
 
+[[package]]
+name = "synstructure"
+version = "0.13.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c8af7666ab7b6390ab78131fb5b0fce11d6b7a6951602017c35fa82800708971"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
 [[package]]
 name = "tap"
 version = "1.0.1"
@@ -3110,9 +3246,9 @@ checksum = "55937e1799185b12863d447f42597ed69d9928686b8d88a1df17376a097d8369"
 
 [[package]]
 name = "tempfile"
-version = "3.13.0"
+version = "3.14.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f0f2c9fc62d0beef6951ccffd757e241266a2c833136efbe35af6cd2567dca5b"
+checksum = "28cce251fcbc87fac86a866eeb0d6c2d536fc16d06f184bb61aeae11aa4cee0c"
 dependencies = [
  "cfg-if",
  "fastrand",
@@ -3123,18 +3259,18 @@ dependencies = [
 
 [[package]]
 name = "thiserror"
-version = "1.0.66"
+version = "1.0.69"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5d171f59dbaa811dbbb1aee1e73db92ec2b122911a48e1390dfe327a821ddede"
+checksum = "b6aaf5339b578ea85b50e080feb250a3e8ae8cfcdff9a461c9ec2904bc923f52"
 dependencies = [
  "thiserror-impl",
 ]
 
 [[package]]
 name = "thiserror-impl"
-version = "1.0.66"
+version = "1.0.69"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b08be0f17bd307950653ce45db00cd31200d82b624b36e181337d9c7d92765b5"
+checksum = "4fee6c4efc90059e10f81e6d42c60a18f76588c3d74cb83a0b242a2b6c7504c1"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -3158,35 +3294,30 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "a693d0c8cf16973fac5a93fbe47b8c6452e7097d4fcac49f3d7a18e39c76e62e"
 
 [[package]]
-name = "tinytemplate"
-version = "1.2.1"
+name = "tinystr"
+version = "0.7.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "be4d6b5f19ff7664e8c98d03e2139cb510db9b0a60b55f8e8709b689d939b6bc"
+checksum = "9117f5d4db391c1cf6927e7bea3db74b9a1c1add8f7eda9ffd5364f40f57b82f"
 dependencies = [
- "serde",
- "serde_json",
+ "displaydoc",
+ "zerovec",
 ]
 
 [[package]]
-name = "tinyvec"
-version = "1.8.0"
+name = "tinytemplate"
+version = "1.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "445e881f4f6d382d5f27c034e25eb92edd7c784ceab92a0937db7f2e9471b938"
+checksum = "be4d6b5f19ff7664e8c98d03e2139cb510db9b0a60b55f8e8709b689d939b6bc"
 dependencies = [
- "tinyvec_macros",
+ "serde",
+ "serde_json",
 ]
 
-[[package]]
-name = "tinyvec_macros"
-version = "0.1.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1f3ccbac311fea05f86f61904b462b55fb3df8837a366dfc601a0161d0532f20"
-
 [[package]]
 name = "tokio"
-version = "1.41.0"
+version = "1.41.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "145f3413504347a2be84393cc8a7d2fb4d863b375909ea59f2158261aa258bbb"
+checksum = "22cfb5bee7a6a52939ca9224d6ac897bb669134078daa8735560897f69de4d33"
 dependencies = [
  "backtrace",
  "bytes",
@@ -3335,9 +3466,9 @@ source = "git+https://github.com/Cuprate/tower.git?rev=6c7faf0#6c7faf0e9dbc74aef
 
 [[package]]
 name = "tracing"
-version = "0.1.40"
+version = "0.1.41"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c3523ab5a71916ccf420eebdf5521fcef02141234bbc0b8a49f2fdc4544364ef"
+checksum = "784e0ac535deb450455cbfa28a6f0df145ea1bb7ae51b821cf5e7927fdcfbdd0"
 dependencies = [
  "log",
  "pin-project-lite",
@@ -3347,9 +3478,9 @@ dependencies = [
 
 [[package]]
 name = "tracing-attributes"
-version = "0.1.27"
+version = "0.1.28"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "34704c8d6ebcbc939824180af020566b01a7c01f80641264eba0999f6c2b6be7"
+checksum = "395ae124c09f9e6918a2310af6038fba074bcf474ac352496d5910dd59a2226d"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -3358,9 +3489,9 @@ dependencies = [
 
 [[package]]
 name = "tracing-core"
-version = "0.1.32"
+version = "0.1.33"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c06d3da6113f116aaee68e4d601191614c9053067f9ab7f6edbcb161237daa54"
+checksum = "e672c95779cf947c5311f83787af4fa8fffd12fb27e4993211a84bdfd9610f9c"
 dependencies = [
  "once_cell",
  "valuable",
@@ -3413,26 +3544,11 @@ version = "0.1.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "eaea85b334db583fe3274d12b4cd1880032beab409c0d774be044d4480ab9a94"
 
-[[package]]
-name = "unicode-bidi"
-version = "0.3.17"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5ab17db44d7388991a428b2ee655ce0c212e862eff1768a455c58f9aad6e7893"
-
 [[package]]
 name = "unicode-ident"
-version = "1.0.13"
+version = "1.0.14"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e91b56cd4cadaeb79bbf1a5645f6b4f8dc5bde8834ad5894a8db35fda9efa1fe"
-
-[[package]]
-name = "unicode-normalization"
-version = "0.1.24"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5033c97c4262335cded6d6fc3e5c18ab755e1a3dc96376350f3d8e9f009ad956"
-dependencies = [
- "tinyvec",
-]
+checksum = "adb9e6ca4f869e1180728b7950e35922a7fc6397f7b641499e8f3ef06e50dc83"
 
 [[package]]
 name = "unicode-xid"
@@ -3466,15 +3582,27 @@ dependencies = [
 
 [[package]]
 name = "url"
-version = "2.5.2"
+version = "2.5.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "22784dbdf76fdde8af1aeda5622b546b422b6fc585325248a2bf9f5e41e94d6c"
+checksum = "32f8b686cadd1473f4bd0117a5d28d36b1ade384ea9b5069a1c40aefed7fda60"
 dependencies = [
  "form_urlencoded",
  "idna",
  "percent-encoding",
 ]
 
+[[package]]
+name = "utf16_iter"
+version = "1.0.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c8232dd3cdaed5356e0f716d285e4b40b932ac434100fe9b7e0e8e935b9e6246"
+
+[[package]]
+name = "utf8_iter"
+version = "1.0.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b6c140620e7ffbb22c2dee59cafe6084a59b5ffc27a8859a5f0d494b5d52b6be"
+
 [[package]]
 name = "valuable"
 version = "0.1.0"
@@ -3578,9 +3706,9 @@ checksum = "65fc09f10666a9f147042251e0dda9c18f166ff7de300607007e96bdebc1068d"
 
 [[package]]
 name = "web-sys"
-version = "0.3.69"
+version = "0.3.72"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "77afa9a11836342370f4817622a2f0f418b134426d91a82dfb48f532d2ec13ef"
+checksum = "f6488b90108c040df0fe62fa815cbdee25124641df01814dd7282749234c6112"
 dependencies = [
  "js-sys",
  "wasm-bindgen",
@@ -3588,9 +3716,9 @@ dependencies = [
 
 [[package]]
 name = "webpki-roots"
-version = "0.26.6"
+version = "0.26.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "841c67bff177718f1d4dfefde8d8f0e78f9b6589319ba88312f567fc5841a958"
+checksum = "5d642ff16b7e79272ae451b7322067cdc17cadf68c23264be9d94a32319efe7e"
 dependencies = [
  "rustls-pki-types",
 ]
@@ -3613,11 +3741,11 @@ checksum = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
 
 [[package]]
 name = "winapi-util"
-version = "0.1.8"
+version = "0.1.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4d4cc384e1e73b93bafa6fb4f1df8c41695c8a91cf9c4c64358067d15a7b6c6b"
+checksum = "cf221c93e13a30d793f7645a0e7762c55d169dbb0a49671918a2319d289b10bb"
 dependencies = [
- "windows-sys 0.52.0",
+ "windows-sys 0.59.0",
 ]
 
 [[package]]
@@ -3856,6 +3984,18 @@ dependencies = [
  "memchr",
 ]
 
+[[package]]
+name = "write16"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d1890f4022759daae28ed4fe62859b1236caebfc61ede2f63ed4e695f3f6d936"
+
+[[package]]
+name = "writeable"
+version = "0.5.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1e9df38ee2d2c3c5948ea468a8406ff0db0b29ae1ffde1bcf20ef305bcc95c51"
+
 [[package]]
 name = "wyz"
 version = "0.5.1"
@@ -3871,6 +4011,30 @@ version = "1.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "cfe53a6657fd280eaa890a3bc59152892ffa3e30101319d168b781ed6529b049"
 
+[[package]]
+name = "yoke"
+version = "0.7.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "120e6aef9aa629e3d4f52dc8cc43a015c7724194c97dfaf45180d2daf2b77f40"
+dependencies = [
+ "serde",
+ "stable_deref_trait",
+ "yoke-derive",
+ "zerofrom",
+]
+
+[[package]]
+name = "yoke-derive"
+version = "0.7.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2380878cad4ac9aac1e2435f3eb4020e8374b5f13c296cb75b4620ff8e229154"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+ "synstructure",
+]
+
 [[package]]
 name = "zerocopy"
 version = "0.7.35"
@@ -3892,6 +4056,27 @@ dependencies = [
  "syn",
 ]
 
+[[package]]
+name = "zerofrom"
+version = "0.1.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cff3ee08c995dee1859d998dea82f7374f2826091dd9cd47def953cae446cd2e"
+dependencies = [
+ "zerofrom-derive",
+]
+
+[[package]]
+name = "zerofrom-derive"
+version = "0.1.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "595eed982f7d355beb85837f651fa22e90b3c044842dc7f2c2842c086f295808"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+ "synstructure",
+]
+
 [[package]]
 name = "zeroize"
 version = "1.8.1"
@@ -3911,3 +4096,25 @@ dependencies = [
  "quote",
  "syn",
 ]
+
+[[package]]
+name = "zerovec"
+version = "0.10.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "aa2b893d79df23bfb12d5461018d408ea19dfafe76c2c7ef6d4eba614f8ff079"
+dependencies = [
+ "yoke",
+ "zerofrom",
+ "zerovec-derive",
+]
+
+[[package]]
+name = "zerovec-derive"
+version = "0.10.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6eafa6dfb17584ea3e2bd6e76e0cc15ad7af12b09abdd1ca55961bed9b1063c6"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
diff --git a/Cargo.toml b/Cargo.toml
index a507631ef..220aa7d6b 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -3,14 +3,13 @@ resolver = "2"
 members = [
 	# Binaries
 	"binaries/cuprated",
-
 	# Benchmarks
 	"benches/benchmark/bin",
 	"benches/benchmark/lib",
 	"benches/benchmark/example",
 	"benches/criterion/example",
 	"benches/criterion/cuprate-json-rpc",
-
+	"benches/criterion/cuprate-helper",
 	# Consensus
 	"consensus",
 	"consensus/context",
diff --git a/benches/benchmark/bin/Cargo.toml b/benches/benchmark/bin/Cargo.toml
index 36d0b2c74..22f221618 100644
--- a/benches/benchmark/bin/Cargo.toml
+++ b/benches/benchmark/bin/Cargo.toml
@@ -40,4 +40,4 @@ tracing-subscriber = { workspace = true, features = ["fmt", "std", "env-filter"]
 [dev-dependencies]
 
 [lints]
-workspace = true
\ No newline at end of file
+workspace = true
diff --git a/benches/criterion/cuprate-helper/Cargo.toml b/benches/criterion/cuprate-helper/Cargo.toml
new file mode 100644
index 000000000..c9d0c8d30
--- /dev/null
+++ b/benches/criterion/cuprate-helper/Cargo.toml
@@ -0,0 +1,26 @@
+[package]
+name        = "cuprate-criterion-helper"
+version     = "0.0.0"
+edition     = "2021"
+description = "Criterion benchmarks for cuprate-helper"
+license     = "MIT"
+authors     = ["hinto-janai"]
+repository  = "https://github.com/Cuprate/cuprate/tree/main/benches/criterion/example"
+keywords    = ["cuprate", "helper", "criterion", "benchmark"]
+
+[dependencies]
+cuprate-constants = { path = "../../../constants", features = ["block"] }
+cuprate-helper    = { path = "../../../helper", features = ["cast", "map", "num", "tx"] }
+cuprate-test-utils = { path = "../../../test-utils" }
+
+criterion     = { workspace = true }
+function_name = { workspace = true }
+monero-serai  = { workspace = true }
+serde_json    = { workspace = true, features = ["default"] }
+
+[[bench]]
+name    = "main"
+harness = false
+
+[lints]
+workspace = true
\ No newline at end of file
diff --git a/benches/criterion/cuprate-helper/benches/cast.rs b/benches/criterion/cuprate-helper/benches/cast.rs
new file mode 100644
index 000000000..256f43d5c
--- /dev/null
+++ b/benches/criterion/cuprate-helper/benches/cast.rs
@@ -0,0 +1,40 @@
+//! Benchmarks for `cuprate_helper::cast`.
+#![allow(unused_attributes, unused_crate_dependencies)]
+
+use criterion::{black_box, criterion_group, criterion_main, Criterion};
+use function_name::named;
+
+use cuprate_helper::cast::{
+    i32_to_isize, i64_to_isize, isize_to_i64, u32_to_usize, u64_to_usize, usize_to_u64,
+};
+
+criterion_group! {
+    name = benches;
+    config = Criterion::default();
+    targets = integer, unsigned,
+}
+criterion_main!(benches);
+
+/// Benchmark integer casts.
+#[named]
+fn integer(c: &mut Criterion) {
+    c.bench_function(function_name!(), |b| {
+        b.iter(|| {
+            black_box(i32_to_isize(black_box(0)));
+            black_box(i64_to_isize(black_box(0)));
+            black_box(isize_to_i64(black_box(0)));
+        });
+    });
+}
+
+/// Benchmark unsigned integer casts.
+#[named]
+fn unsigned(c: &mut Criterion) {
+    c.bench_function(function_name!(), |b| {
+        b.iter(|| {
+            black_box(u32_to_usize(black_box(0)));
+            black_box(u64_to_usize(black_box(0)));
+            black_box(usize_to_u64(black_box(0)));
+        });
+    });
+}
diff --git a/benches/criterion/cuprate-helper/benches/main.rs b/benches/criterion/cuprate-helper/benches/main.rs
new file mode 100644
index 000000000..aa325357d
--- /dev/null
+++ b/benches/criterion/cuprate-helper/benches/main.rs
@@ -0,0 +1,14 @@
+//! `cuprate_helper` benchmarks.
+#![allow(unused_crate_dependencies)]
+
+mod cast;
+mod map;
+mod num;
+mod tx;
+
+criterion::criterion_main! {
+    cast::benches,
+    map::benches,
+    num::benches,
+    tx::benches,
+}
diff --git a/benches/criterion/cuprate-helper/benches/map.rs b/benches/criterion/cuprate-helper/benches/map.rs
new file mode 100644
index 000000000..7b2f34453
--- /dev/null
+++ b/benches/criterion/cuprate-helper/benches/map.rs
@@ -0,0 +1,70 @@
+//! Benchmarks for `cuprate_helper::cast`.
+#![allow(unused_attributes, unused_crate_dependencies)]
+
+use criterion::black_box as b;
+use criterion::{criterion_group, criterion_main, Criterion};
+use function_name::named;
+
+use cuprate_constants::block::MAX_BLOCK_HEIGHT;
+use cuprate_helper::map;
+
+criterion_group! {
+    name = benches;
+    config = Criterion::default();
+    targets =
+        combine_low_high_bits_to_u128,
+        split_u128_into_low_high_bits,
+        timelock_to_u64,
+        u64_to_timelock,
+}
+criterion_main!(benches);
+
+/// Benchmark [`curpate_helper::map::combine_low_high_bits_to_u128`].
+#[named]
+fn combine_low_high_bits_to_u128(c: &mut Criterion) {
+    c.bench_function(function_name!(), |bench| {
+        bench.iter(|| {
+            b(map::combine_low_high_bits_to_u128(b(0), b(0)));
+        });
+    });
+}
+
+/// Benchmark [`curpate_helper::map::split_u128_into_low_high_bits`].
+#[named]
+fn split_u128_into_low_high_bits(c: &mut Criterion) {
+    c.bench_function(function_name!(), |bench| {
+        bench.iter(|| {
+            b(map::split_u128_into_low_high_bits(b(0)));
+        });
+    });
+}
+
+/// Benchmark [`curpate_helper::map::timelock_to_u64`].
+#[named]
+fn timelock_to_u64(c: &mut Criterion) {
+    c.bench_function(function_name!(), |bench| {
+        bench.iter(|| {
+            b(map::timelock_to_u64(b(
+                monero_serai::transaction::Timelock::None,
+            )));
+            b(map::timelock_to_u64(b(
+                monero_serai::transaction::Timelock::Time(0),
+            )));
+            b(map::timelock_to_u64(b(
+                monero_serai::transaction::Timelock::Block(0),
+            )));
+        });
+    });
+}
+
+/// Benchmark [`curpate_helper::map::u64_to_timelock`].
+#[named]
+fn u64_to_timelock(c: &mut Criterion) {
+    c.bench_function(function_name!(), |bench| {
+        bench.iter(|| {
+            b(map::u64_to_timelock(b(0)));
+            b(map::u64_to_timelock(b(MAX_BLOCK_HEIGHT)));
+            b(map::u64_to_timelock(b(MAX_BLOCK_HEIGHT + 1)));
+        });
+    });
+}
diff --git a/benches/criterion/cuprate-helper/benches/num.rs b/benches/criterion/cuprate-helper/benches/num.rs
new file mode 100644
index 000000000..070951411
--- /dev/null
+++ b/benches/criterion/cuprate-helper/benches/num.rs
@@ -0,0 +1,64 @@
+//! Benchmarks for `cuprate_helper::cast`.
+#![allow(unused_attributes, unused_crate_dependencies)]
+
+use criterion::black_box as b;
+use criterion::{criterion_group, criterion_main, Criterion};
+use function_name::named;
+
+use cuprate_helper::num;
+
+criterion_group! {
+    name = benches;
+    config = Criterion::default();
+    targets =
+        cmp_float,
+        cmp_float_nan,
+        get_mid,
+        median,
+}
+criterion_main!(benches);
+
+/// Benchmark [`curpate_helper::num::cmp_float`].
+#[named]
+fn cmp_float(c: &mut Criterion) {
+    c.bench_function(function_name!(), |bench| {
+        bench.iter(|| {
+            b(num::cmp_float(b(0.0), b(0.0)));
+        });
+    });
+}
+
+/// Benchmark [`curpate_helper::num::cmp_float_nan`].
+#[named]
+fn cmp_float_nan(c: &mut Criterion) {
+    c.bench_function(function_name!(), |bench| {
+        bench.iter(|| {
+            b(num::cmp_float_nan(b(0.0), b(0.0)));
+        });
+    });
+}
+
+/// Benchmark [`curpate_helper::num::get_mid`].
+#[named]
+fn get_mid(c: &mut Criterion) {
+    c.bench_function(function_name!(), |bench| {
+        bench.iter(|| {
+            b(num::get_mid(b(0_u8), b(0_u8)));
+            b(num::get_mid(b(1_i64), b(10_i64)));
+            b(num::get_mid(b(0.0_f32), b(0.0_f32)));
+            b(num::get_mid(b(0.0_f64), b(10.0_f64)));
+        });
+    });
+}
+
+/// Benchmark [`curpate_helper::num::median`].
+#[named]
+fn median(c: &mut Criterion) {
+    c.bench_function(function_name!(), |bench| {
+        bench.iter(|| {
+            b(num::median(b(vec![0_u8, 1, 2, 3, 4, 5])));
+            b(num::median(b(vec![0.0_f32, 1.0, 2.0, 3.0, 4.0, 5.0])));
+            b(num::median(b(vec![0_u64; 100])));
+        });
+    });
+}
diff --git a/benches/criterion/cuprate-helper/benches/tx.rs b/benches/criterion/cuprate-helper/benches/tx.rs
new file mode 100644
index 000000000..0b2dc2d0c
--- /dev/null
+++ b/benches/criterion/cuprate-helper/benches/tx.rs
@@ -0,0 +1,28 @@
+//! Benchmarks for `cuprate_helper::cast`.
+#![allow(unused_attributes, unused_crate_dependencies)]
+
+use criterion::black_box as b;
+use criterion::{criterion_group, criterion_main, Criterion};
+use function_name::named;
+
+use cuprate_helper::tx;
+use cuprate_test_utils::data::{TX_V1_SIG0, TX_V1_SIG2, TX_V2_RCT3};
+
+criterion_group! {
+    name = benches;
+    config = Criterion::default();
+    targets = tx_fee,
+}
+criterion_main!(benches);
+
+/// Benchmark [`curpate_helper::tx::tx_fee`].
+#[named]
+fn tx_fee(c: &mut Criterion) {
+    c.bench_function(function_name!(), |bench| {
+        bench.iter(|| {
+            b(tx::tx_fee(b(&TX_V1_SIG0.tx)));
+            b(tx::tx_fee(b(&TX_V1_SIG2.tx)));
+            b(tx::tx_fee(b(&TX_V2_RCT3.tx)));
+        });
+    });
+}
diff --git a/benches/criterion/cuprate-helper/src/lib.rs b/benches/criterion/cuprate-helper/src/lib.rs
new file mode 100644
index 000000000..5a529588c
--- /dev/null
+++ b/benches/criterion/cuprate-helper/src/lib.rs
@@ -0,0 +1 @@
+#![allow(unused_crate_dependencies, reason = "used in benchmarks")]
diff --git a/benches/criterion/cuprate-json-rpc/Cargo.toml b/benches/criterion/cuprate-json-rpc/Cargo.toml
index a0cae64e6..b7bd1202f 100644
--- a/benches/criterion/cuprate-json-rpc/Cargo.toml
+++ b/benches/criterion/cuprate-json-rpc/Cargo.toml
@@ -20,4 +20,4 @@ name    = "main"
 harness = false
 
 [lints]
-workspace = true
\ No newline at end of file
+workspace = true