Ivan Drever is a Scottish folk singer, songwriter and guitarist. He often tours with fiddler Duncan Chisholm who founded the Celtic rock band Wolfstone which Drever joined in 1990 but left in later ye
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 0x42e26b407977d266d067a55986920bac6739723e88d76a86c46d28f96a9007ee. 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/3abca6cd-58bd-4d7a-b00a-41e9026e5606.json and https://artists.proofprofile.net/proofs/artist/3abca6cd-58bd-4d7a-b00a-41e9026e5606.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).