Horst Paul Silvester Fischer (31 December 1912 – 8 July 1966) was a German medical doctor and member of the SS who participated in selections in Auschwitz-Birkenau concentration camp during World War
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 0x824b1a4e976307e1bd1aaead814ee585a6867e5c0f23517f842ed2a4b5617cdd. Chain 2 (Bitcoin): anchored in block 954593 (2026-06-20T19:46:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/be660260-556a-4790-911e-bcf144767276.json and https://artists.proofprofile.net/proofs/artist/be660260-556a-4790-911e-bcf144767276.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Trompette-trompette (feat. Willy Berking et son orchestre) [Mono Version]