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 0xd93c464261c7caf6cf7e6e9fb7c9f2bc17e6e9c7409e6b710d8bf40e6362dd6c. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3228320c-761f-4bd5-b365-d8b272aac7d6.json and https://artists.proofprofile.net/proofs/artist/3228320c-761f-4bd5-b365-d8b272aac7d6.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 0xca07acae7fd8f3d83d7155347ee1697c809197c247bbdb16b2b8c01455534d6a. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/MXF019200726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe006b5b5415c923c7409d0061fe47a6902d9feb4e3e3b35f8193a34e7b793044. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/MXF019601423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab272b5d5238a80ee1bf032a3cd96c16423c96bb43c40ed25790f94ccf37dd05. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:31:28Z), 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/MXF019601426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe94ea5a5df64e2805c496cec4d765d1e60ea3fbd45b991046da012933947c239. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:20:00Z), 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/MXF019200731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae76a310950e08783f025304d8d7e485ae476230c4c8ca99526331dd587c017b. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T01:08:10Z), 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/MXF019200728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10bfb94f82b0cb75c1c18f4639fe28e07c6909f9e3071ade49c4bfebaa0402fd. 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/MXF366409797.
15 Éxitos al Estilo de Marcela Galván (Versiones Originales)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35d0a6d4caf38e110a407e484f7aaf3f34b6728836f4df506ee9f0ce2085987f. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/MXF019200734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb5db521cec590501f2ff6d431f04e0716d7038b489922d7a4377bf310ee1646. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:37:57Z), 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/MXF018601787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa61d18fdbe26256c0be5d4792ac19bdd8cff839935372881b2d66be252e23bb0. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/MXF018601789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84c63246720be9627cafa99c0852ceedc823aaadaab158426a8773527825ebb5. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T04:56:38Z), 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/MXF018601791.