( , ,"kapellmeister" (US) and ), from ('chapel') and ('master'), literally 'master of the chapel choir', is a word of German origin that designates the leader of an ensemble of musicians. Origina
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 0x4976830ffd89d9fc88f5681ef9eca8a7a8c627d95e6b2d82a54a7fa2ac6a0346. Chain 2 (Bitcoin): anchored in block 954134 (2026-06-17T19:41:05Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7f651053-b7f6-406a-9e6b-490cb2ce1c7c.json and https://artists.proofprofile.net/proofs/artist/7f651053-b7f6-406a-9e6b-490cb2ce1c7c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).