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 0x4541ddf2a6db5a9fdce3c23b97bf19096d190a7488845feb98d300e0893ce237. 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/80ca3f5e-5dd5-4576-8302-8006c0bece50.json and https://artists.proofprofile.net/proofs/artist/80ca3f5e-5dd5-4576-8302-8006c0bece50.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 0x85403cefa96996e655788b90b12f5a6b8d41bc9b531e12d7ecf15459e48cf3b3. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBARU9800681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77b55ec28e5acc125ddb3899968b936f8df2cbe9cbde6d12d459445bff050a21. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBARU9800682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bae71785cb15be754eb9f2ab829cab9a49f5b809cc3b3e917157d082469b318. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBARU9800683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc6548a0fc95715263fc719e769dc39e571b88da47818eeae1387a65a7dc8fcf. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/GBARU9800684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f9c052e913617717c2eb78b79dba9b7c704418aff47f45c4d7f958133c12eb0. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBARU9800685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6563e850e4c2bea109eae6fdfbd06395ae48dae70b0fc4935a884e08a6a5102. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBARU9800686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x943f076e0258686bc22fd62383159b930ec5801b57584a8b7a8f508435af394a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBARU9800687.
Homenaje, 'Le Tombeau de Claude Debussy'
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dc4903b7f82640ee6af68a68209b0518d8be32495c1c5c5f03b70d6634c72a6. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GBARU9800688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeccf599c1a364e39ec53f3bc38f37ad35ecca5958797fd77fa230abef2c093e7. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBARU9800689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x064f6b0d0aa6e3c3a95be554b93719eda1981dc85d6bec34514ee180b7ae9bea. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBARU9800691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffb9174e5e8d7f4f62475b9c7a4be976868f5ac4c09b49bf6cae7e27d5ca3167. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBARU9800692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda908ecb2f1c5bbea1222270a4490bb53013504c7df404bf0189e961e89e81c1. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBARU9800693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x873eb4e84934741786e690e1aa32fb08be0e53dcbda68941e52581214d1c179c. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBARU9800694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b81d2aea72731178c997a2962be36d48a8758cbe8422d855303bcc9439eb948. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBARU9800695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3a126a1b51e1a9be2f5a1b7821fd54d64403ff4ba7d047365ff48333d8f900a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBARU9800696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3a126a1b51e1a9be2f5a1b7821fd54d64403ff4ba7d047365ff48333d8f900a. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBARU9800696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bae71785cb15be754eb9f2ab829cab9a49f5b809cc3b3e917157d082469b318. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBARU9800683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3a126a1b51e1a9be2f5a1b7821fd54d64403ff4ba7d047365ff48333d8f900a. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBARU9800696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3a126a1b51e1a9be2f5a1b7821fd54d64403ff4ba7d047365ff48333d8f900a. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/GBARU9800696.