The Marsh Family are a British family musical group. The group consists of parents Ben and Danielle Marsh and their children Alfie, Thomas, Ella, and Tess. The family live in Faversham, a town in Kent
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 0x670deaa055d7c199b9d2bb4d672a503079e94348dbfa309bd25472de1d66df63. Chain 2 (Bitcoin): anchored in block 953923 (2026-06-16T09:51:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1c687406-a5d8-4633-b361-d4c21806cac1.json and https://artists.proofprofile.net/proofs/artist/1c687406-a5d8-4633-b361-d4c21806cac1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Bring Us a Candle / Mack the Knife (Prostate Cancer UK)
We'll Have to Wait for Sue Gray's Inquiry