Gadom () is a village in the administrative district of Gmina Golczewo, within Kamień County, West Pomeranian Voivodeship, in north-western Poland. The village has an approximate population of 150.
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 0x8132f5b1458cd232884aa9bcc81d6c9f987c8d6f25beda1f5905e4f64dbd620e. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/90d51880-cf29-4ccf-b9c6-7183b5b297e6.json and https://artists.proofprofile.net/proofs/artist/90d51880-cf29-4ccf-b9c6-7183b5b297e6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).