Klassische Philharmonie Bonn (Classical philharmonic Bonn) is a German touring symphony orchestra, based in Bonn, North Rhine-Westphalia. It was founded by Heribert Beissel in 1986, derived from the C
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 0x020ead76c3d335f43378c60d4e7fc537c3f06c9c2066bf4f56f6cc566eea4baf. Chain 2 (Bitcoin): anchored in block 953777 (2026-06-15T11:52:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ce0d6773-b671-48db-b76b-972dbbb4b574.json and https://artists.proofprofile.net/proofs/artist/ce0d6773-b671-48db-b76b-972dbbb4b574.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Brahms: Piano Concerto No. 1 in D Minor, Op. 15 (Live)