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 0xfa64ab24d8937c1129a79d789b53f66a6da01dbec218dc0df73cab1b3be294d9. Chain 2 (Bitcoin): anchored in block 954580 (2026-06-20T17:48:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b7782988-9943-44cb-a08f-7f5acd13423f.json and https://artists.proofprofile.net/proofs/artist/b7782988-9943-44cb-a08f-7f5acd13423f.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 0x9bb0061ac45c61d36f8f6e53e7d5edb5644a2021bdfebf78a82a9006f5d7cbfd. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:06:22Z), 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/US3DF2470819.
Lost Woods (The Legend of Zelda - Ocarina of Time)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ea77c04c617b80e836aa2ac6ce59ca0f709fa43b2e2d20d3976adba59d1fed6. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/US3DF2495888.
A Town with an Ocean View ~ Kiki's Delivery Service
Gally's Theme (Gunnm | Battle Angel Alita)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b97bd9708553f1d556a0eaaa240c7d43f0b2174ec58d40bd4fc5d1fcc844a0e. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:35:47Z), 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/USANG2464483.