Poloni is a municipality in the state of São Paulo in Brazil. The population is 6,113 (2020 est.) in an area of 135 km2.Instituto Brasileiro de Geografia e Estatística The elevation is 548 m. Geograp
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 0xc7c2c7c1faee463628ed0d031df92523a5ff4d625fa2bafd9011dacb6152023a. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/79a9144c-2b87-4e1c-90bd-8f67674e4184.json and https://artists.proofprofile.net/proofs/artist/79a9144c-2b87-4e1c-90bd-8f67674e4184.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).