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 0x71a6411961fc25362a51590dc633eccb9a1c78a47d000382866c7d774841f1c9. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6143b99d-4c8c-40f4-b47b-32a297d21e40.json and https://artists.proofprofile.net/proofs/artist/6143b99d-4c8c-40f4-b47b-32a297d21e40.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 0x772b2109a700eed0cd47843bf3cd45ad84d21753c3c1b2f4e8ab32c5f64273e3. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:25:11Z), 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/FR6V80055467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x721027aeb84326cbeb1a6fb2191daa6f5cd54a873a6429708d7e875034e996b7. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/FR6V80055472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x437dad5f7065827197416169b03ffcdd1693c04fe35335ef7bc15bff7a8e2366. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:46:25Z), 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/FRX762498902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c16792f488d335f7279db97e165896b26ea850541849c812b70af78c809f7e8. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/FRX762498904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7155964bef19de96d027dc64d498b9d18061946f3cf25b1e1b101f635216305. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/FRX762498906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x555dd9121551249fdfe1c9281b17e7d8cccfd80369ef971315ce8e5d057ee8a5. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FRX762498908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53375626361a5ad17949491ed04863bd3350f1878e44bf5986c193208011aa50. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/FRX872411667.
ADO Solutions (Spécial campagne R.H.D.P.)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x279b0066a6d589c15857e290e2fa52b237a223f89e58fbb2fe84c73a703d6618. 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/FR6V80193362.