Richard Anthony Simpson (born May 28, 1968), also known as Chubb Rock, is a Jamaican-American rapper who released several successful hip hop albums in the late 1980s and early 1990s. A National Merit
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c57272d97a3be002e4c2af04b179d522f43ff2fb309853c88617b6dbb0629ce. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8f99d27a-214e-42d8-a9e0-e9df809b62f9.json and https://artists.proofprofile.net/proofs/artist/8f99d27a-214e-42d8-a9e0-e9df809b62f9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18b024dd1bcf662a2533708465a7da6101be12ca6c273fe1bac5a98b60a4bd05. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US39N0601437.
And The Winner Is... (with Hitman Howie Tee)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca942fe16f8ccdd8a302771ffb9c293c40414a92df3ee4f1d80128022d2c88ee. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US39N0400368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf63f2879ce894e4834922d0ebaa32335cca6f4ea6b4fe4559ed2045b17439a77. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US39N0400371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3012ccf667b974344085d08510c86c9340671ab389d3ce4fec4307d5626f2a04. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US39N0400372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dd753ca4fbbdb128c08743424b332094146b0662a34f189ca44d85d1b28267f. Chain 2 (Bitcoin): anchored in block 958422 (2026-07-17T13:35:31Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US39N0400375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0600132d935a817837f82243342ba25e8cf0538ae872f44d463399665e647817. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US39N0602627.
3 Men at Chung King (feat. Grand Puba & Red Hot Lover Tone)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7a3cfd37617eb86ddc71a043f5afc230c5cbe62892f4bb6f37648af1235835f. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US39N0602633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50aada83be67010227725dfcd11492a891eec598118ffb5a29657109a0d1c823. Chain 2 (Bitcoin): anchored in block 957866 (2026-07-13T14:54:25Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US39N0602635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa57408d74d71ef94033049cff24f55bd1fbffe001eff7197a447dd6318ccf3df. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T13:55:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CA5KR2067698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cce9b3dafdd215805f32b44bb00e2522123548b8f666c5f5fb7e227e5d5206d. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T05:02:25Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CA5KR2067707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f04d2ca23c89bfcae183272f01bafdcdbb970c693ff4c332e466949124bd895. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:42:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBBXG0820022.
Treat 'Em Right (Re-Recorded / Remastered)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc08cffcad171e4adde7c82378d72a9eeb44144f3fb45a707c68c2293563c7211. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA371058246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06cff180a3198dd775c7d95e875751d04375d3b308c494e4be7a37ffa3b52172. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA371278669.
The O-Zone Files: Rare Demos and Unreleased Tracks
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9de6c289696172f7d98d91ccfba003408f59b77088c801cab35208fc021aab1b. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM6N21969318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e8bc0e495759afd730e2ac158748f17cd4a866ec27eb7febe821940ba9a796d. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US78T0741593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eb2f370ec688819f85de02ad77c5dd938db688ddec77bee346423d9afad47f2. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMMEH2300564.
Chubb Rock Can You Please Pay Paul The $2200 You Owe Him (People, Places And Things)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1b66636f3483d24befe3c4d405565c71d701e0f2450b7e117af3cb0781a728b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USRZR0388815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3424c516111b82a7ae05df534098a7dcbb6e07e2af128abeebc0190dc073c1a. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CA5KR2261440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6bf07aad07b6e16d1d81aa92701ebc1776d96b79d5b2dc64f7329e02b991ebf. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA371359264.
Treat 'Em Right (Re-Recorded) [Remastered]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe2e53aa2c6fdc62176233b1795fc4670fbae702a9c9ecbe21a8434e4ff6b7c0. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA561418660.
Wake 'Em Up (feat. Vast Aire and Chubb Rock) - Cadence Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10077f04b7a9f2ec4e2bfb5ae3a206b5e00665759956be669a829726a6537ed0. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USJAT1100015.