Shira Choir is an American Hasidic choir which sings in the genre of Hasidic music. The conductor of the choir is Yoeli Horowitz. History Founding Shira Choir was established in the United State
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 0x46a29789ecaa3e214a06f9e877fbbb3b273194713f1a47cf7518280859499151. Chain 2 (Bitcoin): anchored in block 954588 (2026-06-20T19:15:05Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b9ebb2ba-1606-4ebd-b69a-9f91436ae6ea.json and https://artists.proofprofile.net/proofs/artist/b9ebb2ba-1606-4ebd-b69a-9f91436ae6ea.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).