Don Vail is a Canadian indie rock band, formed by Mitch Bowden and David Dunham, formerly of the band Chore, and Bill Priddle, formerly of Treble Charger and Broken Social Scene.. ChartAttack, January
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 0x17e51c75d34571c406ec0a430c505badcc7d8ac90c40b46527f60286938de1d1. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/93a393f7-f328-43e0-a26e-b68f4b8b7e41.json and https://artists.proofprofile.net/proofs/artist/93a393f7-f328-43e0-a26e-b68f4b8b7e41.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).