Boby is a village in the administrative district of Gmina Pułtusk, within Pułtusk County, Masovian Voivodeship, in east-central Poland. References Category:Villages in Pułtusk County
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 0x6a4c5445780860e94b2583c82419db3953d2216b7f35f7745c6c006cf0829104. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9a731d2d-a9fc-4ad5-9143-399379c9f6de.json and https://artists.proofprofile.net/proofs/artist/9a731d2d-a9fc-4ad5-9143-399379c9f6de.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).