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 0x732d4fd6cf4c92a28eba703948e92bf3b3861cf60caeceff94b7c0b10697ce83. 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/dd2a133c-d8f6-442e-ad92-0ecf4a27643f.json and https://artists.proofprofile.net/proofs/artist/dd2a133c-d8f6-442e-ad92-0ecf4a27643f.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 0x422b3fa6faa67e54617a54f0eb7df03fac82febf24b6d137ba07711b4873e246. 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/MYHY11401627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b1f3e1593983171500521707b8e519e594c3f46a524ddfde6e59121875c9829. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/MYHY11401606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb30e60c714fd0e9c53ab6dd60be1ad3cd77a373eb0be266c721e2f7fde46b9c2. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/MYHY11401602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc53917455c970787c5f27d1cfbc5b683d39532dc6c94a8c0a3030e1fbdab5c6. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:43:08Z), 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/MYHY11600303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa389752fe28bfcecc931eb04ffee90557f878db79e07a825bc9b74a6b3002640. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/MYHY11600305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05391af148258ca758f445df7da1a8775df8fbdf3e53ba9e9ce018f3c747b12e. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T06:58:25Z), 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/MYHY11600315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7438f3b437bb36ffe3648faea4065936c17221aa66b87e24c2f3037aeb96ab2. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T03:53:49Z), 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/MYHY11600316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb38deecc237a5f369f61ec965fca39343a758ff2abfdb42f6241fe09dc1c21c0. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T14:43:54Z), 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/MYHY11600322.