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 0xb8ad4010292b85d2fb29cd3ac106d5ab0a1970abe019f073865b091d3d637c80. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/60e4f579-6664-4afd-864a-3dbb683c0b73.json and https://artists.proofprofile.net/proofs/artist/60e4f579-6664-4afd-864a-3dbb683c0b73.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Mikis Theodorakis: 90th Anniversary Concert
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 0xd3d1576f32f9900a44bb7e7e06fc93203893ca2510ebec9cb4a5a4ba4e6f4ee1. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/GRFM11600222.
46 Legendary Songs: Mikis Theodorakis by Spanomarkou Orchestra
Oi Nerantzies Anthizoun (Dance Mykonos Remix by DJ Chris Z)
Oi Nerantzies Anthizoun - Dance Mykonos Remix by DJ Chris Z
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23d5f05b6520207ef1bcae629cb350ab265c55b933e1e462fe62b4e19cdb9a11. 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/GRFM11700186.
The Journey of the Red Umbrella (Original Score of the Theatrical Play)