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 0xd589490d00258ee5c31bd0401f6a598e936379e055a35a17ce6cd1e265b85314. 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/9f5be824-0230-492d-9138-4380655d25b1.json and https://artists.proofprofile.net/proofs/artist/9f5be824-0230-492d-9138-4380655d25b1.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 0xf0ee205e678b3ede022d199169dee0abc10881000db678a7da15a0d248505bac. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/USSM11000137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb66748b93eb14e992d470d6146061eb8f128c89ede456cc36d52c3256b906e8e. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:57:28Z), 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/USSM10313019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5745db245e175ed104a453da4039c015fc3a29137ddbf5edfd8b1a96b1656414. 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/USSM10313759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56bfc1f0dc75ba7dcd7b6966394117758c85a6efc388418a44837e8988aa0ec7. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USGR10200552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa0785cccf9e19a86225f3245b219220927f190862bfd51da809d162c17fd491. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/USSM16000031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe1f72394898074505a9c79308bbfae918e5658a0894ff16de1f90a4a464130b. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/USSM16000032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41f8ffed9a913c2d953f8e78756ac7026b77a82a74ed9a752cc627cbdb80aca7. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USSM16000037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bd42acf509a5042855da8095f22304fb1cdd982272fadb0b213a29a991ed262. 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/USSM16000039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe1f72394898074505a9c79308bbfae918e5658a0894ff16de1f90a4a464130b. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/USSM16000032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc75b09f36a83449a4e13e7742707647ed0e88bd274abcfe84371fcf13126297a. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:18:27Z), 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/USSM16000034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc182348e8fb22eee2fabd55cd6a39e0f624618ca1ec202be0b372507c57c3d31. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/USSM16000043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bd42acf509a5042855da8095f22304fb1cdd982272fadb0b213a29a991ed262. 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/USSM16000039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67c0892dea7ace18116d03b1da79bf0c6b7fb7f9a482f53b5c176eafe79e5523. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T03:46:25Z), 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/USSM16000041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbad8bc96d8d8c07d6aa482ab9b8901423a817cae89fd68b163a499d2ffd847be. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USSM16000055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc689f3546866bb68491e9ce464d2ef456d569d6b4f3ea0d7840aeadeaad796e. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/USAT20300792.
Sin & Soul..And Then Some / Between Heaven & Hell
Les idoles américaines de la soul : Oscar Brown Jr, Vol. 1
Essential Classics, Vol. 126: Oscar Brown, Jr.
Brother Where Are You? - 1964/Live At The Cellar Door, Washington, D.C./Edited
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6430dd651e30a6b6eb3f619d8c62ba08e44c394f463ebc9285a9723beb7a601. 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/USPR36486858.
Brother Where Are You - Matthew Herbert Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe64092064fe75fcf7f82eeb5ec4869710330ac0cfca7b50d6cd34192c9ee5de8. 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/USGR10300557.