Gustav Schmidt may refer to: Gustav Schmidt (general) (1894–1943), German military officer, lieutenant general in World War II Gustav Schmidt (canoeist) (1926–2016), German canoeist Gustav Schmidt (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 0x3fbc5652e42397b8f26f3288f28174ba6d69007727d046ebda0a50aeffe7fe7f. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a03e7790-75b4-4d4a-8b3e-7cc4a86507e2.json and https://artists.proofprofile.net/proofs/artist/a03e7790-75b4-4d4a-8b3e-7cc4a86507e2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).