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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87c0cd6a55e4f0f2be8923bfaca24155561c759597384e640f0d2f6c3f96966f. 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/0facf514-ae78-4721-9918-65e4314ba847.json and https://artists.proofprofile.net/proofs/artist/0facf514-ae78-4721-9918-65e4314ba847.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1da45fa9d2e9c6f82dc206367a375a1660234171ff2213099395bd15c7c49337. 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/FR2FD1400072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eab51d3778b9ef813fa90e40408c4b2a6369340226207c2a3f13ac77bffd483. 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/FR2FD1400075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a45067c1122a6e3f02c87ce2b4aeda2c495848582e86c6f8e7a8b6cff9e34d1. 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/FR2FD1400083.
Flying over the Black Hills with Crazy Horse
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91756dffd91e9f7441322406e5cf74739991741e621dd88a19c1de44e3e385bf. 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/FR2FD0900014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e495d5cf02bb7eb6d599f4d8a763febe9bbcf32d2fa515f56b5d5def816750e. 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/FR2FD0900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x518057c74d8514df5d783d41e86d81490afa23c33b41bc08bde411aabfbed4f4. 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/FR2FD0800027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb257f8aaf5879c37e8e5221a23edbf4c98c250e25fd6a94967740c5ccff85da. 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/FR2FD0800029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31318c8d9e6936c36811a2b16274a46c596cf9426855fb5b4bfdb63b95c1fceb. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FR2FD0900015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0298f2f8dad5d0321598c86bec8235511dbda85f75a3a33f70c14b6e6017632d. 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/FR2FD0900016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16db67bbe20c6dfc981515d09b96639e0742c0c50fd1b68008d341497dd5fa30. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/FR2FD0900017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa528bf308a3e66b019d1064fb8793e5e32f12fa11da2bfcd0de5a4af90013425. 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/FR2FD0900019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x359a0719505ea97047d6dfd22b15862a16de34f2fb5432586431631f0c73d4e0. 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/FR2FD0900020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a214461b2374fa3ef187ad1e412fa0fc3242b6ed0217a9880a136e9d3383316. 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/FR2FD0900021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x630625fc9450198978ea4b1411f18bc0a6e412b19ea878f4986e5f206509af92. 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/FR2FD1100025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x466aa03fb6d19811e19478687f4f015639603965abaa990cd964c2798bae9b76. 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/FR2FD1100028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f7116a5e6969901d9aabfc83eaf3c825254d9c8bc9f2a832d291ccbf774ae03. 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/FR2FD1100029.
Nuit de Rêve (10 Year Anniversary Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f1326037286e31ba905994299503ed620a1673451084f1026de2ac730e62400. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZ4K31600252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x559ba6d380cd22092b22bc6c92b3cd5d8eb6ebcadb3320704a825b355cb6d215. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZ4K31600255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71e588e88687f6585828a928f200f4de5b88c149ff6e4d4c79950a9d7ace495c. 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/QZ4K31600198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97d5426c2d3527e87c67677fcd83b61c4465f938b1078fc4fe7b2ceeae1b346e. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZ4K31600200.
Les secrets de la princesse de Cadignan (Bande originale du film)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f5b0017459701ca94294b33e981177f0dedd50239a454b940d095e732c51d5f. 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/FRZ081000937.
Voyage - Facing the History of French Modern Psychedelic Music
Voyage II - Mort pour la France : French Underground Voodoo Music
Core-Tex Labs, Vol. 11 (Seigneurs de la guerre)