Sława (; ) is a town in Wschowa County, Lubusz Voivodeship, in western Poland. As of the 2019 census, Sława had a population of 4,321. It is situated on the eastern shore of Lake Sławskie. History Th
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 0x64a7eb7527e49cc78b93f992bb3f51a75920d953169b8a3dfdb02c1a1287d960. 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/fa3a69f3-19de-4b56-b608-b9c8a3d5c325.json and https://artists.proofprofile.net/proofs/artist/fa3a69f3-19de-4b56-b608-b9c8a3d5c325.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).