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 0x62011490eb0d5bd98e0f1725aedc0e253bb02940a5b88b6ac73077002c9a0068. 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/b59d0e82-8e32-44d5-8939-7a12193c22a9.json and https://artists.proofprofile.net/proofs/artist/b59d0e82-8e32-44d5-8939-7a12193c22a9.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 0xde836521f3586f7a3b15378def8ca6cf4c1ef8fd8d841b56383a5e7daa110e66. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/BRBMS1200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98a21ec9b627345f212c13fde514ab7c5bc8334d3efd3704d58c55994728c831. Chain 2 (Bitcoin): anchored in block 956859 (2026-07-06T01:42:12Z), 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/BRBMS1200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde836521f3586f7a3b15378def8ca6cf4c1ef8fd8d841b56383a5e7daa110e66. 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/BRBMS1200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x936f8b83a2c80910f423a079e8ea547e7ab9b973ebce65a40350d5ae52eb8353. 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/BRBMS0600003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bc88d1703a47f4702d2201f07d021d49910d9802f070e8bc91cae328ff95d68. Chain 2 (Bitcoin): anchored in block 957778 (2026-07-13T00:08:48Z), 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/BRBMS0600002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f781824bd97b89dd9e21c4502ad633a1496916ae154b2293f01e5a8f7b5fc61. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/BRBMS0600014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46a856236c5406e905fe6fd22449350947b9b3a3aec0b99cfdce813900782cd8. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:07:57Z), 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/BRBMS0600006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ef89e82fd93c228a95ba462954e338dedba5e44f9c0f94aec84217a2ca4aab9. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T08:20:39Z), 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/BRBMS0600007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbfa0fc35c78c04ec5e56789ff5f50260498c05da4c187994001330e6bb21242. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/BRBMS0600005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e95f0249d0f796275f2c82f4c9d5be9481384bdcd3313ec03fb49bfa10aae1c. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/BRBMS0800004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3f611bdb1727aad94d0755be24ab88b963c1738c57a6c502507aa32020f739b. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/BRBMS0800021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66468404254f9c36770912a1ee0474cc18856b82406e1e8afcf6b5a1476df5bc. 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/BRBMS0800029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f87b23296bd94b07c970bc4ec19c0ab15d0e359c91097ed2fc19099574e1d6d. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/BRBMS0800027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6fde00bd6340063246aca8a4372349d38fc441cf84e472a6a44b03c97647ab8. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/BRBMS0900006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4439e3524961cb14037cf5cf4abe7aaee34d9cd79c919b9828eb47e0665336c7. 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/BRBMS0900007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0f72b46fe7cfd5ebfa2b87ca62d9aecf0fe24a0e2a0dc388c33f89b6381dd69. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/BRBMS1100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d7a9e776e628969884eea4238b1a2ecd075347889347c41c403dbfa8b4c8b2a. 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/BRBMS1800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d7a9e776e628969884eea4238b1a2ecd075347889347c41c403dbfa8b4c8b2a. 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/BRBMS1800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3820e2dc7e74dbbf9c7b07581fc7ed4ec607d6990d4cfbed71358427e64a4c1. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:46:16Z), 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/BRBMS1800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6286f7f17cbc16192a876c6d445cb788eb484228004604e3745d839cbb8bf3c9. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/BRBMS1800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52f1e41bc2c2e1873d20e1b450507bb689699d55606b3b138a09b06a1ebda86a. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/BRPUI2000254.