thumb|Vox humana pipes The vox humana (; Spanish and ; ; , also a term for a celeste stop, q.v.) is a short-resonator reed stop on the pipe organ, so named because of its supposed resemblance to the
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 0xbd5b32b7a9faac45407060f917cd4b1fef30db4bcecc585714645cbe589509a0. Chain 2 (Bitcoin): anchored in block 954580 (2026-06-20T17:48:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b6c083bb-9c9d-41b8-82c5-abf40a15e487.json and https://artists.proofprofile.net/proofs/artist/b6c083bb-9c9d-41b8-82c5-abf40a15e487.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Dance to Dead (Anatomical Forms to Die )