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 0x06f923376876e29ba658ecced0e46b3272baa0142578804ae25301cfc2676071. Chain 2 (Bitcoin): anchored in block 953605 (2026-06-14T07:39:50Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/117503b8-1302-4747-b541-4c2d0e7d10b9.json and https://artists.proofprofile.net/proofs/artist/117503b8-1302-4747-b541-4c2d0e7d10b9.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 0xa3334b3b79bb169a8bd2a876201dd119295ac0a9cd285cdb605045f3e6b0ad21. 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/BRAIY0410004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba3b7f0cc16ef359b177f0e57add8c8e9b8b77c0d53270f80cfcd56dc563b577. 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/BRAIY0410008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9014f9cc5cc93f6387d3dded69b017b2d2ebe9e6b59d57f202cace264b37a9aa. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:08:56Z), 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/BRAIY0410029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe8fad94b818c6b45785c4667cbf63c75ede9245fd62341e1b55908df2dfb49c. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/BRAIY0410033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69bd65e0ffd851731792805b3d6218e310475f6465eb03d64c0fe7c2679feb52. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:04:31Z), 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/BRAIY0410003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99dba10f202d53cc9ebc5357735666961a6fad56c413abd903ff7bf62f90896a. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T10:44:01Z), 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/BRAIY0410021.