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 0xc97657db208f31f7d37985f0cce57f51163f5e2937a443b34e0b70a25a8dc312. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/49c75a2e-369b-4c62-b982-96be311dad97.json and https://artists.proofprofile.net/proofs/artist/49c75a2e-369b-4c62-b982-96be311dad97.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Le trésor de la mère appartient à l'enfant
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 0x6c798cffdaa77084c554ec7904f87eed14174463e745e0c913460638d7299eef. 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/FR8M81400020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f0968498f2f230870b1e53b3b08a840b07e025687f0ce30c89b05a2365f0429. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:42:52Z), 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/FR8M81400060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x364c56421a56b2c953e851034a92c3929af89ae8074d3053f68c3c9ee28b122e. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:45:38Z), 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/FR8M81500160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf055d318757621c358d5fb8dc76d365ae0e760a1ae3deed6b1bbc18142044849. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/FR8M81500200.