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 0x50c8f5be0dd2f1c74f00cff5b6ea3c807eaaf59beaa2284e08554465ec610906. Chain 2 (Bitcoin): anchored in block 953733 (2026-06-15T03:12:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/975f8a32-e772-4c59-9868-18ede8bb9d2e.json and https://artists.proofprofile.net/proofs/artist/975f8a32-e772-4c59-9868-18ede8bb9d2e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Tout le monde debout (Bande originale du film)
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 0x089a8526a9bcf691ee204b8e1dcad6c8bf8de0bcef2714d062182860840a4575. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T11:47:29Z), 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/FRR412207001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5d7d116acbe2063a3cd2b90dec2c3f06c140fea7f0efc38f7f8a880dee99308. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:43:17Z), 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/FRR412207002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x446362df76369c767609c2fb19373dfe08b4069f5ae48ac170b603f057b374b2. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:48:22Z), 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/FRR412207003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcde9ea45e093cce2f1aaa8c775b78288372e6d6f7576ae8470cec60f21bc886b. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FRR412207004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5799612b594bb0d6d2c2535e2b9f516ea65f9c29ee57fe55f123efba8793fc8. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/FRR412207005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f3ceb22ed9d7a582ed12ac32e647e9eb06ba9dec1061c50012f4c79d1126534. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/FRR412207006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3fb844d55feda7749850213b0ce97a2674c3b0fa2a88013cdb065743fc41991. 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/FRR412207009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaebbc72bfab23388bda3f936f96902f89a9dd6cea67f8858049ef77cebd3179. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/FRR412207014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9d38c6a5bdad457d7a050e698e906aa0a8298ed7fe6d81fc7f9757106989aaf. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/FRR412207015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47404cfa93e49d24923233675477ee71cbacce257c75c62b26e125187d30bf83. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-20T00:25:04Z), 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/FRR412207016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94ecaf9b53ea0045e1ba8110e7436ce12f9572c4f711183860a6c874a872a373. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/FRR412207017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1481c0ae4df42b8d2698e1d7b00011aff3deefaf50a874d41e8a2b264e0ff60b. 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/FRR412207018.
We Have a Dream (Original Motion Picture Soundtrack)
Un ours dans le Jura (Bande originale du film)