Siberia ( ; , ), is an extensive geographical region comprising all of North Asia, from the Ural Mountains in the west (with the Ural River usually forming the southernmost portion of its western boun
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 0x3bc110299530a97e5141c761e27e2ce7afb6655e562eb9012307ed4fdea16eb5. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/70d9dbcf-0073-4525-9025-68b9f56c8964.json and https://artists.proofprofile.net/proofs/artist/70d9dbcf-0073-4525-9025-68b9f56c8964.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).