Cambridge University Musical Society Chorus/Choir of King's College, Cambridge/New Philharmonia Orchestra/Sir Philip Ledger
{"copyright_id":"0x9c474e3df727ad1a660f5c43bd3cfd60ae6aaf1f54bac0f838a6478ba6af4fb2","name":"Cambridge University Musical Society Chorus/Choir of King's College, Cambridge/New Philharmonia Orchestra/Sir Philip Ledger","registered_at":"2026-06-21T00:41:51Z","symbol":"NIM1765253","token_address":"0x952ec353ca5a6476ea5992a91fca3aae7ebe31b6","type":"artist","uuid":"d092caec-179c-4488-8755-03592b06251e"}
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 0x9c474e3df727ad1a660f5c43bd3cfd60ae6aaf1f54bac0f838a6478ba6af4fb2. Chain 2 (Bitcoin): anchored in block 954631 (2026-06-21T02:46:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d092caec-179c-4488-8755-03592b06251e.json and https://artists.proofprofile.net/proofs/artist/d092caec-179c-4488-8755-03592b06251e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).