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 0x1c62a1f51d83dd2d12a5cd2a9a0f7f16fe8869395d00eace776d4c0850cfdf7a. 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/6fd4a343-e638-4b3a-a731-06a72cac808b.json and https://artists.proofprofile.net/proofs/artist/6fd4a343-e638-4b3a-a731-06a72cac808b.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 0x780fa238aed640cb119c4f0a63e1d88fd4db7b8e09c931222e5436003e6a07c8. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:05:14Z), 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/FR2X41555599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe676ea681a85a7807f1aaad3a96ff06ab9c50d2483632997950d4d9a32950f89. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/FR2X41555606.
"Claro De Luna" De La "Suite Bergamasque"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdc7a916c177c3e8ee4a8bebdd1d2ae05c23650de6c54367c7d779961c0cbc52. 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/FR2X41555611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed7a5eeecf0b1da0fce5e943a25620df7c46af430d516aa0c4e86f917c23e124. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/FR2X41538668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95fd6d0760716ead4e798d06d592be45037bc7f5348d438d43dc8f5254030f5b. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/FR2X41556122.
Sonata No. 8 "La Patética" En Do Menor 1Er. Mov.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a94b04d1d387dee6b551cde11fa25389d3b30c6a79acd66ca93fa9d2d7cbe39. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/FR2X41555828.
"Danza De Las Horas" De La Ópera "La Gioconda" Act. Iii
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eb4ffed62a5b5c793efe696f5a5c0a6230b6f515ef93c8d6013fc162370332e. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/FR2X41556502.