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 0x98feecae07cdc3f49a238c7038ab636346c37513048fddfbed766fc7a904e803. Chain 2 (Bitcoin): anchored in block 953754 (2026-06-15T06:45:19Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ad53d08c-21be-4bb6-9e94-a6bdb2094517.json and https://artists.proofprofile.net/proofs/artist/ad53d08c-21be-4bb6-9e94-a6bdb2094517.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 0x41e433ea2d66a4c69ecbdf17762d3a1367021b0024c02e8c23c428376398f3ed. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZNMT2247290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fdfc9a561750e11c87d3e283f4ad4398632e13f22a57fbdd162912f8d8f62ef. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:15:15Z), 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/USLD91760906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a9669b425d719c9a3ad8c059d3ae713966d2f9091ec51eae53cda11f8ae87e3. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:31:22Z), 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/USLD91768825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd08aa63981f9f77b8269b61dab821485c7ede4f79f089647c8db98084de6c6fe. 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/USLD91769482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc7c9fd18572b812cfb262e3f6e0aee4d00eb28639e61e6f395a6dc2e649156a. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/USLD91771175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf63b11914605aa724f47a3cfe5b6501b2a68de4a8a40f687f6b2a17c7fb2ff9c. Chain 2 (Bitcoin): anchored in block 957778 (2026-07-13T00:08:48Z), 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/USLD91776087.