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 0x585f70dba42620825ec06310df7c8031211aa4b340471d271fce4e61c81d7f32. 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/ed5504f8-cdc4-45d2-aa85-c8e5eb284e80.json and https://artists.proofprofile.net/proofs/artist/ed5504f8-cdc4-45d2-aa85-c8e5eb284e80.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 0x95319770690884b084fec6304eb7e460848a685bd266000b7bf7cd9cc2f4742e. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FR5M10100020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa79b7303729f1488568146b346bc08bb8c0faf327f8431e24521287bd25fc9e4. 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/TCAHC2329131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8aa18c4c80c955266c4689dba82641883f2a9a133075ef3b192b60019dcb5b6. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/TCAHP2396824.
On a tous besoin d'amour - En duo avec Johnny
Jeanne La Romantique (Conte musical de Saint-Preux)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95319770690884b084fec6304eb7e460848a685bd266000b7bf7cd9cc2f4742e. 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/FR5M10100020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc727b0c76c0fb852867dd9d70061f090c24ef44deebd112a77fbc75755375924. 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/LU5M10500120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x288ee0a4094cba32b3de5ea59e1a9423626305b49879506cd5a297129349548e. 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/LU5M10600330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x406d3fcbec2aa349585b39cccff16cf1621cde9c2fe20289225493cdedd33691. 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/LU5M10600350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x971ede375e7288aa8d3e08c4cd6bf1d8ca94ea18bc11ec51fb113ee3b5b46eff. 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/LU5M10500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeed5c7888571c15a6d03891d8f904b25a447248b8efa52482cd7286a240af6da. 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/LU5M10600380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x433a192419721e0f943373dd6a6811e2ee74671e2e03797570021cf343db6ea5. 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/LU5M10600430.