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 0x33728350c34011e1fe01aa7ab91fcda3c089ebdc271478d3ccd1f9a841fc7d2a. 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/7263db7f-2bc9-4944-89e9-3b5a2ad884b0.json and https://artists.proofprofile.net/proofs/artist/7263db7f-2bc9-4944-89e9-3b5a2ad884b0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Allahu Akbar Humming + Thunderstorm (Muffled)
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 0x76710ab9a8693ebc759e6c6413bd45fd7d0a49086a33e1bffddd3ba9c65676ea. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:54:27Z), 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/DE1QW2503188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83b4d20b1980b1a273343b4b51e5f3c7c6971b0d837c07cf8c244c0e067e12d0. 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/DE1QW2509484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6483b2e448496188f7f28c4a7a8ee620352275ab6ffeb9c4da93460a7336c64b. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:40:30Z), 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/DE1QW2509490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9199a54e00ec3f3c1d634ff624a99dc6693a362578c536f043f5aed55ba6089. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/DE1QW2514422.