Blace (, ) is a town and municipality located in the Toplica District of the southern Serbia. According to 2022 census, the population of the town is 4,865, while population of the municipality is 9,6
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 0xb518b84bb9057569150f1b7029ffc80859fc411938160d652c7017131ff8f57d. Chain 2 (Bitcoin): anchored in block 954580 (2026-06-20T17:48:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b6d13e06-7a61-45de-8613-5c3f917cc4ad.json and https://artists.proofprofile.net/proofs/artist/b6d13e06-7a61-45de-8613-5c3f917cc4ad.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).