Paul Valdemar Horsdal, (born 1 September 1945), commonly known as Valdy, is a Canadian folk and country musician whose solo career began in the early 1970s. He is known for "Rock and Roll Song", his
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 0xe25fa777fe4222c2fab24d54bff706fd4f6d0bdca6ff3102926a72689d48a925. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3d9e852f-57e7-4b84-ba22-33fb570c855d.json and https://artists.proofprofile.net/proofs/artist/3d9e852f-57e7-4b84-ba22-33fb570c855d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).