Janne Stark (born 1963 in Karlshamn) is a Swedish guitarist and author. Biography Stark recorded his first 7" single with the band Paradize in 1979, then formed the band Overdrive in 1980. He relea
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1c1db5cd1f01bc4224a283bb3de5da08f98e828ba96f61680e26c822382ee38. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fcf5c053-fdd1-4856-a5a8-27e089a5d5aa.json and https://artists.proofprofile.net/proofs/artist/fcf5c053-fdd1-4856-a5a8-27e089a5d5aa.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).