thumb|Herbeck in Johann Ritter von Herbeck (25 December 1831 – 28 October 1877) was an Austrian conductor and composer, best known for leading the premiere of Franz Schubert's "Unfinished" Symphony.
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 0x0b7cb5891381b9730c45d3b7181b1a03187b2e8b5bfce12f6341f9f8a2df75ab. 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/61746e22-1e84-4fde-80bc-993362c32042.json and https://artists.proofprofile.net/proofs/artist/61746e22-1e84-4fde-80bc-993362c32042.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Herbeck: Symphonie Nr. 4 D-Moll Op. 20 (Orgelsymphonie) Und Symphonische Variationen F-Dur