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 0x3ae5d908aae3cfca5bc5cf9e6cb98efee6f989c4de422c4087fb450164f51bb8. 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/c1b127c8-3dfa-4c92-9fb4-08748774962e.json and https://artists.proofprofile.net/proofs/artist/c1b127c8-3dfa-4c92-9fb4-08748774962e.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 0x87799819e94c0954f8453dddffa6cc0544639268b7eb8de7d8ea95e42c4be1be. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/CH6542081295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc75fee2390c55d2c949db18cf023ac3f89cde5bd120ff1666288961d4c8c02b0. 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/CH6542066410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04c8c1a4c2f4a5458ddd36da5453deaf818c1ed3dea37ef60bc52f9570583c17. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/CH6542066409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x392950646b80066dc652a182730ff5e76cdb5289458164d85439e916d6b701e9. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CH6542066418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ffd12e61536f7f85745696f0fca305839c0a19f95ff98010c00ca7fb0bf7f29. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/CH6542066419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb168d627d9e09cfe4383ffddad0fc0ecdeaced6c3b3e83e739686cfd638636d. 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/CH6542051201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0046eab8b6b60be2d0d5b1bb5dff51eead2483621c5d9593591ad7e5aac3aed. 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/CH6542051200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f036bcbc470fee057475cd71171251f211f8bf46f083a7b8616e29970f7242d. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/CH6542051199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe74983b2348c85f16298fdbd8b52d2441d324500157065c5b5f1a17415d5bb49. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/CH6542051177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4288ece3947936790ecffb0e1056ffa514425cd0b37c9ed8b4bfe5ece5dbbd4. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/CH6542051175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71e319a84013a8b27d15d057f449a8c509c5b0c90e33dfbd5da4279e407cc817. 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/CH6542051174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a057e0b20ee3dc1881aa4e6360abbc07c618975b53342cbe6312893261fe856. 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/CH6542051173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dc38e5a1badbcf21094db377c10a46bd3c80cd82dee203195be89a470f6ab35. 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/CH6542051172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14ee87fc3d93653179cfbf652d5e4c78c24364280e78958ec7f896bcaa96fc22. 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/CH6542051171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa92fcb46b0d37c700bd56cd6414cdc34ac97d8a91bcf2a8b72b7bbe1cdea244d. 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/CH6542051170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x826d68bdf2a9f23717b0ed2656ed24e686fb2c43b6d94f1d6f79a658a98028cb. 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/CH6542051168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa6d4e89d24b3c8e1ac7b44027769a2387292f71944af74e7a52a91fdeb561c7. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/CH6542051167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24649dabf755add3d99217faabffc24eb46b79db9fd53d54693e94f1c122db53. 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/CH6542051166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10125be1bab59346c15657d1b0b4f7135ec6baae947e261f5d3f17f2f4d70ce7. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/CH6542051164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe78821a1acf67095787267f04b000844e8eede7f756bbadfb7f2ca760c3957c7. 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/CH6542051163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7910b76cfc63a7ee367112741366da38eda40323428891845b5cc29b0dd48f47. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/CH6542020977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x700e6736f2176f878e1506cfdf34c02a331b53ae2bdc9612e39254d7d49f3ff3. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/CH6542020974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65a306207f3c4fc2778316c84f89a9c92f353653f7734dd7f9b0cb275088a132. 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/CH6542020973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12ace71dba56dd85d4e4ff38730000e0d6e29d418a1105e9f6a2dc7c7ba20b3f. 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/CH6542020971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f9bf9cc36d484f13c212fb75338b681447a6c522ab50eb17a4ab82404e12300. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/CH6542020955.