Strunz can refer to: Claudio Strunz (born 1966), Argentine drummer Claus Strunz (born 1966), German journalist Thomas Strunz, (born 1968), German soccer player Strunz classification in mineralogy
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 0xa0292da95d86af5c8365ad9005315b257793918fef4bffd321472b9251ffad14. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/eab70a09-e3a1-4c54-aeb7-97dcf1554eec.json and https://artists.proofprofile.net/proofs/artist/eab70a09-e3a1-4c54-aeb7-97dcf1554eec.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).