Bronto Bronto, an unofficial unit prefix, used to represent anything from 1015 to 1027 bytes, most often 1027 Bronto Software, a software company "Bronto-" a prefix used in the classification of m
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 0xb94d5c8953dbc5ef6717217947d30c8f1e8fa30fb6e6d4aa5572b0b898159f51. Chain 2 (Bitcoin): anchored in block 953949 (2026-06-16T13:28:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0d07e5d0-d23a-445b-aa52-d919cfca7b29.json and https://artists.proofprofile.net/proofs/artist/0d07e5d0-d23a-445b-aa52-d919cfca7b29.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).