{"copyright_id":"0x5ad1a0b6e85ca1f09daa2b38fcc15b25f9bf89d29c563fd98ef45a0b820b1d93","name":"Kroumata Percussion Ensemble","registered_at":"2026-06-20T15:55:52Z","symbol":"NIM1646571","token_address":"0xc02699d59cf470f6ce0cea3dee3113501ce2bac0","type":"artist","uuid":"b7fd2287-41e0-4030-ad9f-c24cc09eaf9a"}
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 0x5ad1a0b6e85ca1f09daa2b38fcc15b25f9bf89d29c563fd98ef45a0b820b1d93. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b7fd2287-41e0-4030-ad9f-c24cc09eaf9a.json and https://artists.proofprofile.net/proofs/artist/b7fd2287-41e0-4030-ad9f-c24cc09eaf9a.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 0x24e65de3e4eddb3e457318de66904059ebf3c57e695008da1758ae8606b4e508. 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/SEAEC8332020.
Nilsson: Krasch! / Maros: Picchiettato / Kox: The 3 Chairs / Gubaidulina: In Erwartung
Cage / Katzer / Strindberg / Sandstrom: Music for Percussion
Miki / Takemitsu / Nishimura: Japanese Percussion Music
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeaa6edb1d9224c19af585cf3e678ef1683c8f3ada13244090c04957bf8d6176. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/SEAEE8962010.