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 0x878791c146cf06fcb98a445ff0642a5097a43935bae48b5db30af905c2901dc3. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8ac0e91e-dbb7-422a-b7a3-baadf14f96a5.json and https://artists.proofprofile.net/proofs/artist/8ac0e91e-dbb7-422a-b7a3-baadf14f96a5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Bright Light At The End Of A Long Tunnel
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 0x64c3ecf7646c132d60bd03cbb8ba8c889cde0104949a27f7bdafac2fe2045137. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QMFMF2455683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeefb830e11728c8c35cc8a895796dedb167b2c313714ee38942e835b36edec43. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/QMDA62444388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fb937f945899b86f57905a38ba30181f83085841be10306b224b3bb7f5bb3fe. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QMDA62467975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26ae52f17cc86ac481c1e75ed91784109d2febf4baefe3af9408fc26c93e23bd. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QMFMF2455686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3007951370182c6426a94fc567bd1beb12fe8a295dd60a3b20a3d96cab0644d. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QMFMF2455689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6738544843e27c6779e0a7beffce634471f18c635d814ac3620b3e3039bfbb5e. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:25:35Z), 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/QMFMF2455677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x287553292f0cc2d9383b272ee9a4ca3f7357460c8d321ea6556a3a4c75b1daa0. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/QMFMF2426859.