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 0x64b51aa9c0c4b41996e843870fff09fe3d80b8cd35ea37a277e164a1664875d0. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d022f9e8-416e-4a31-b86e-c6f175d35bb8.json and https://artists.proofprofile.net/proofs/artist/d022f9e8-416e-4a31-b86e-c6f175d35bb8.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 0x97f210accc68122db5aa57a481114d8cf308f76d669bc1d02faeeb63a6116fb3. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T12:41:24Z), 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/ING902300199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedf7a846e0a9ed8dbbaaf7e941d3b6850f6810e15bd6329be75fa925056ec3ff. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T01:02:31Z), 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/FRX872339573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9437ffd963e38c7373420538efe67eb2945212aee2517e115e9d3d271f51da83. 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/ING212200878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e631d1217e7a1f54ec37c72a76897b075c65f9f5ce2a02b163e1dedc2fde15f. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:43:14Z), 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/DGA0R2345318.
Tu Jo Mile (ft. Ashish Thakur) [Original]