Thomas "Tommy" Krappweis (born 9 May 1972 in Munich) is a German writer, comedian, film-, television- and audiodrama director, producer and musician. Krappweis is the founder and managing director of
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 0xae19e83226b043905b5c44c558dc1b35a65898a2b951eea8d42cd32336c6252d. Chain 2 (Bitcoin): anchored in block 953976 (2026-06-16T16:55:36Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2af40f0b-c2c1-4984-9f5d-ab87a3556eb5.json and https://artists.proofprofile.net/proofs/artist/2af40f0b-c2c1-4984-9f5d-ab87a3556eb5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).