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 0x78dc95ea7af2b9a1254ca51cdef25873d17fdbc5f4e6f4eb710810c2268919fe. Chain 2 (Bitcoin): anchored in block 953713 (2026-06-15T00:33:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8595ac3c-54c1-4e35-bccd-ddfcafa43afe.json and https://artists.proofprofile.net/proofs/artist/8595ac3c-54c1-4e35-bccd-ddfcafa43afe.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 0x7d380df50dcec24a3c672d19229cea7fc724831ed2cf1149b8822087c847b35f. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T03:12:07Z), 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/ITI020400049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a9f98195a7fbbf9816270569f559bd288b7f582c2401067c82a1a6b4777b3fd. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T19:01:20Z), 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/ITI020400050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef6ad93127c934787108a81698f11e83476225c763bf3b25ec4b424b99cbd411. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T14:05:59Z), 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/ITI020400059.
Acid Jazz Instrumentals (Jazz Funk Breaks and Instrumental Tunes)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x293c1e3eef318e43ce6d0882aa376139ae99b4fe5199a578f8601fc62b5f72da. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ITI020400057.