Double Espresso is a live album performed by The Tony Levin Band at the Bearsville Theater, Woodstock, New York. Track listing Disk One "Pieces Of The Sun" - 7:15 "Geronimo" - 3:27 "Silhouette" -
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 0x50ec9b16350a4df295eed49849e7fbd75fdc98e2ca372d47361889c7a3326fe5. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/03a4b061-bb0a-4b99-843d-20742a7e546d.json and https://artists.proofprofile.net/proofs/artist/03a4b061-bb0a-4b99-843d-20742a7e546d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).