Peter Espevoll is a Norwegian vocalist who, in 1993, started the band Extol, with whom he is most associated. Background Espevoll was the son of a missionary family, and spent a great deal of time in
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 0xd7a4fd75fae0f4848d335f705a201a5eb95fd84dcb44cdf24e21bbc277094442. 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/d1e7fd75-7973-4fff-83d7-5310e1fcd6a6.json and https://artists.proofprofile.net/proofs/artist/d1e7fd75-7973-4fff-83d7-5310e1fcd6a6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).