Girl Choristers & Lay Clerks Of Winchester Cathedral
{"copyright_id":"0x926c75526089e69eaeb884153805bff05b1e5ef1a3fac01919bbad98b9e659cd","name":"Girl Choristers & Lay Clerks Of Winchester Cathedral","registered_at":"2026-06-20T15:38:15Z","symbol":"NIM1644009","token_address":"0xcc4b08d3cbb6e4351fd694eb7a816c9afe8614b8","type":"artist","uuid":"b84ffb2f-9362-4fbb-8ab0-d629c19d5b3a"}
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 0x926c75526089e69eaeb884153805bff05b1e5ef1a3fac01919bbad98b9e659cd. Chain 2 (Bitcoin): anchored in block 954588 (2026-06-20T19:15:05Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b84ffb2f-9362-4fbb-8ab0-d629c19d5b3a.json and https://artists.proofprofile.net/proofs/artist/b84ffb2f-9362-4fbb-8ab0-d629c19d5b3a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Hildegard of Bingen: Mattins Antiphons for St Ursula
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 0xf27c1731fb5c105fd6f158df4d47fc2ad6484cd168a9f71168b33b2b34735946. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/USX761707018.