Ingo Pohlmann (stage name Pohlmann; born 18 May 1972 in Rheda-Wiedenbrück) is a German pop music singer. Biography Pohlmann is a trained bricklayer. After he did his community service, he moved to
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 0x827bf9aa11319017428185b577ff81d17b73fcd6bd680d2c8556ca528157098f. Chain 2 (Bitcoin): anchored in block 954533 (2026-06-20T08:57:02Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a5b218a5-e2a8-4910-a090-b54b11f3fcb2.json and https://artists.proofprofile.net/proofs/artist/a5b218a5-e2a8-4910-a090-b54b11f3fcb2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).