thumb|A pair of Flame Panda monkey boots in the lace-to-toe work boot style. thumb|Monkey boot style that became popular in the UK in the 60s and 70s. While the yellow lacing isn't present, note the t
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 0xaa10c84b0eebaa20c0b6512ef789079555338630a862ada6c29bbb49ef9635e8. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2a117e04-79af-4af8-98e4-3b099dbdddc0.json and https://artists.proofprofile.net/proofs/artist/2a117e04-79af-4af8-98e4-3b099dbdddc0.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 0x028a2ea417a653de4eb4bf38a01caf3c291149f3bab596856430efb8baeebcc9. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:51:49Z), 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/FRX202216072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc519bfcb40e74bf908890acb5200b494d1c6607963bfef737ec9a2e03eea730. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:52:07Z), 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/FRX202216076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafd5596d6d5f58ec07b4d449884952c80ec24f0f1549a6aa79df1878c61985c6. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/FR10S1916135.