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 0xd49e3d218c80fe3db4ca4e22d7d8a40cd81e52c7b1e0e2f63d5498cc4846af3f. 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/aad8dd10-0dbe-4f62-ac03-b73b8781a610.json and https://artists.proofprofile.net/proofs/artist/aad8dd10-0dbe-4f62-ac03-b73b8781a610.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 0xf17c64a677ec056aabf340eceb0c5a1dbbef3a16e1c05078b87af06880838956. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:08:44Z), 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/DGA052246254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79fd01aac3935f0b7aefe77d132e7be0ab98847b1ad8678144eadeb5d8419a1f. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/DEGR81712245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x993b4672400e51ffd965bca8f67c7b68f479cd98e480e528e413c3c729e2d87c. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:54:51Z), 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/DEGR81712246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b79a3096593bfc0ba0e06eb06ec44233e54f4a0af3d138e56a8ecccd7cd18ab. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/DEGR81712248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77f104c726a9849f1b92655fc57e5117140d558cc538297935979f85c6701ffb. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/DEGR81712251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x193ff4333eb4ab25e0cd43ddbb1c0a34c743322443d18a02fa0e7bee037c9089. 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/DEGR82015570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8d8dd38a7fcf4e26c32a31c97077bcd3f9f46b3b68985274b61c21b4f626c75. 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/DEYX82189179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x189a27ddc5642003cc2188fa10d5369e82079ba770804079101bdebda8399201. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/DEYX82191521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x095d0138f3ca0d93117db299649ffce2aad82cf08af0d224356ff59e6978cb35. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T20:00:45Z), 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/DEYX82193051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4305e2039eed4d85f1ccf977cb4d4236417806719cf679ff161c574b7efad873. Chain 2 (Bitcoin): anchored in block 957599 (2026-07-11T19:42:17Z), 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/DEYX82193047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee1b59826587a59b77d567213244b20cd38456661a8e74e46a744457a15fdfa4. Chain 2 (Bitcoin): anchored in block 958680 (2026-07-19T06:04:14Z), 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/DEYX82193052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08966d04e6ae3f10ac6429aedf66f2a6f6b6a7b8434da39dfa4e22f77e0f55c4. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/DEYX82193050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb88cfe810772470df284979d28179b054ea2412ec6efb03e0fc45eec7e8963e9. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T21:09:27Z), 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/DEYX82193048.