Sometymes Why is an American Folk Noir group, formed in 2005 by Kristin Andreassen, Aoife O'Donovan, and Ruth Ungar. Its members all live in New York City, though the band tours frequently at festival
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 0x7b89ec9e26068b44945a7a30d55ab5ebbccb2b6848b2573f7f72410a4c577d2a. 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/69a953e6-c2ef-40ba-b140-ca44165da496.json and https://artists.proofprofile.net/proofs/artist/69a953e6-c2ef-40ba-b140-ca44165da496.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.