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 0x2224117b101910d14bbc4ff912ce691557b3d85667c5b35b9a5c8a9ef1e25c30. Chain 2 (Bitcoin): anchored in block 954569 (2026-06-20T14:36:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b1a0c916-1e19-4677-8482-4847fd2f54e0.json and https://artists.proofprofile.net/proofs/artist/b1a0c916-1e19-4677-8482-4847fd2f54e0.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 0x8c52e4d258de97bb387d8cb2fa9846cff3c47e62c0114e01791b6621d1921787. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:40:47Z), 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/GBDJX2100302.
Stonefruit (LIVE AT THE WAREHOUSE) [Live]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24097b9293f981c1c1b268b04c660e652ebe25975aa1e070c94187ce3d15e7f2. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:22:30Z), 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/GBBTF2500011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24097b9293f981c1c1b268b04c660e652ebe25975aa1e070c94187ce3d15e7f2. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/GBBTF2500011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24097b9293f981c1c1b268b04c660e652ebe25975aa1e070c94187ce3d15e7f2. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/GBBTF2500011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c5b0cbb9be29a1f5ec47c2f2173c86de1a279a71161c3e0050aef339914c1f9. 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/GBBTF2500006.