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 0xdc77716ed2456e698286b998b5802cd8267fecce3ef5feb4464ed269f8cc0c79. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f69b2dd6-3648-472e-bc80-0fac0460e25a.json and https://artists.proofprofile.net/proofs/artist/f69b2dd6-3648-472e-bc80-0fac0460e25a.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 0x192ebc68ac30e1e8bb73c25268f837d5a23ea158f97e956b80264b9ac710d60c. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/UK7FT1500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5512a00ce0b05e99891d1f608dcc4825deda6ec76976442898442ba3f813c6e. Chain 2 (Bitcoin): anchored in block 959034 (2026-07-21T16:34:25Z), 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/UK7FT1500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa07014288f62d25c77bcec9c10d900b9a6c0d476f1d5a4305ed8016b16290181. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/UK7FT1500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8966cbf5cff7d1d65f309891268074fe49d66ed7ddfd4bb78932987522dd4a5. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/GBPVV2406391.
Brown Paper Bag - Crissy Criss Instrumental Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0d8d071c8b077cd38c7113708aed18ff074f15c496f60c47767c43af5cef526. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/GBPVV2406353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ce44062f7c84c7a412d8290c0321f0d6df2d3c3fea90517e1ba8dfbcae178d9. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/GBPVV2400373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef6646c8001eac6c90517fbb4e8abacc0a431e7c4b4240b48476dc765caa3a51. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GBPVV2406446.
Brown Paper Bag - Roni Size Music Is The Sound Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x535a7dd5ba0a852ffbf0098fdf7091e3b28ce7c05d1724fa8269567caf148da1. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/GBPVV2406447.
Brown Paper Bag - Nobukazu Takemura Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfff29a29112e033a4b654e446f213733023c873efbf05752174ff72348c2905c. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/GBPVV2406448.
Brown Paper Bag - Roni Size Extended Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17aeb4486d791588bbf99871803b7a2fdfd760502ce0abef1370b7f13fab39a7. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/GBPVV2400385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0281ac02360eb9b7b2dad065db6edfb4e89ee64d286ce994026fd0e0714a7d6c. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBF089700330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8b4aa5eada8db9136535bc8273d20049bcf6a5c5435ea14c38adae9bc67cf9a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBF089700307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d3c4131482299da4cedea0932cde4252c0c090f5cb002361fb60ced3f4b0f22. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBF089700260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf45e298248e5b9dd33cb8bbf3e7cb9d9bc96cfd1e54e819f883e6f8363fd2996. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBF089700312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe232d1f3aabf1dc7a2ea7cfe0e8237c6610bc13d7e20b9daceb6ccfa8e389e29. 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/GBF089700213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbda9b5adbe063bee5f7ec07cd4504583b2f0de908c54c3a60b46f6371a2492e5. 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/GBF089700309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9597313dd6064c05e742f8969ebdb4c2617013659e9271b0c06649803c95adc8. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/GBF089700310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85640b50fb85496812c0655e6de9700e4fe564e07924530d41eb8b885c8d6d99. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBF089700311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd96a8d766e58047259b28af06c4c17f0dd9f42541b460be6629c68c72da0b0a9. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBF089700258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf45e6d86d598a655e567430e4ef57853b00ab254b879ac9de4e21b87700d4c2. 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/GBF089700313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52c32ac925f9906e3811e09a753abe699aed7607c9684800e1330be6c04687b9. 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/GBF089700314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43efdaa529aa2bf369d530c602795f1b65d09a31eb2d01a656abe29b1cad60d8. 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/GBF089700344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbc680bb604d5851dc7a3155227bb2dd22d49aa36c8dda58e83a96bbc950d889. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBF089700315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x362d3efe56c1bf088e00a39b48a054ccd3f39482c6e83955532af756035e14a7. 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/GBF089700334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62b9d330019909aa095366104fccd7af8a9682651afd243250d7c40da2d49281. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBF089700345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f4ba233a7e51b52eab8afa86bf6a84f7bef581656dc50834803b2f418b3af89. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBF089607457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbab8992c66260b287e20cc30aff1bb35643d12ff330dda65884c4c484a3ab384. 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/GBF089700338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47b3f105074ca279008595aaca13b1bcebcdd2a23555e9b20f1b8f869ea45b5b. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBF089607454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe886479c7798a618d60b04c4a7679fb8c600620e903c2fd650c243c064b13e9. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBF089607455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb00902acd397312271526dbc42d91d043539524a39bab7632e259efc9f9f7e5d. 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/GBF089700335.