Bill Wolfgramm (7 October 1925 — 25 September 2003) aka Bill Wolfgramme was a musician specialising in lap steel guitar and popular Hawaiian music. He was born in the island kingdom of Tonga and was a
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 0xbd904e0fa3beb2067e7a65cdffb8f4cc0f4d0518d0af4e045ac1f4642611347a. Chain 2 (Bitcoin): anchored in block 954043 (2026-06-17T04:15:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/403832ec-a765-416f-9ef1-d98cd458956d.json and https://artists.proofprofile.net/proofs/artist/403832ec-a765-416f-9ef1-d98cd458956d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).