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 0x20edb94c4bb6666e45655399d270cd9f20827c822f579a0268fa0b70ea3d4ba3. Chain 2 (Bitcoin): anchored in block 954533 (2026-06-20T08:57:02Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a7d21567-c2e7-42c3-ba5a-dc7ad31063b5.json and https://artists.proofprofile.net/proofs/artist/a7d21567-c2e7-42c3-ba5a-dc7ad31063b5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Live at Clinton's Tavern, Toronto 10Nov1990
Live At The Town Pump, Vancouver 29Jan1993
Live At The Town Pump, Vancouver 30Jan1993
The Grawood Tape (Live January 27 1995 Halifax NS)
Ankhs and Others (Live Non-Album Tracks)