Stachy () is a municipality and village in Prachatice District in the South Bohemian Region of the Czech Republic. It has about 1,100 inhabitants. The historic part of the village is protected as a vi
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf99d02df7def82eebdbb035e6d6f3d9097f08c184d2d8486a0bf55328fe7230d. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5fc5ce5e-d923-4176-bbd4-84d5a4694e87.json and https://artists.proofprofile.net/proofs/artist/5fc5ce5e-d923-4176-bbd4-84d5a4694e87.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).