The Zamir Chorale of Boston, founded in 1969, is a choral group that performs Jewish liturgical pieces, major classical works, music of the Holocaust, newly commissioned compositions, and Israeli, Yid
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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 0xeb9890eb71beeec3ee941dbf8ac01517f27852cf7df39471babe7a4ad2ac1c4e. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3cb202ee-790d-4c66-b21e-fa8776b06dfb.json and https://artists.proofprofile.net/proofs/artist/3cb202ee-790d-4c66-b21e-fa8776b06dfb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Salamone Rossi Hebreo: Baroque Music for the Synagogue and the Royal Court
Psalmsensation: A Muticultural Concert Experience