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 0xac8a49ade7e11098f59b110f780cb9eac9fa21e6a7ce9f8ccaf4edd3d32b504d. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5e5e7da1-77ba-467c-8533-abcb7f533a50.json and https://artists.proofprofile.net/proofs/artist/5e5e7da1-77ba-467c-8533-abcb7f533a50.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Life's a Bowl of Cherries... And All I Got Was Stems!
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 0x2d0fee82d32cd675271aa5b38d82179aa5227334b5b85f24752fe3f85734c8e8. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZHN62583639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64e640271995eb5df015723858f3f5e1fcd1b57fdd5a2dddacda6da33a9bc5a7. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:41:41Z), 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/QZMEP2537891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2d624a22abc7fd76814191636f5d009bd4091fcb33d9cca894c74315af4bd27. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:54:45Z), 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/QZMEP2537893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x178b376d4e437310933a046864f2d6b8a35f947180ffe82168f9a499613ad935. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZMEP2537894.