Jurupari or Iurupari ( ) in the Tupian mythology is a mythical hero or god known to indigenous tribes of Brazil and Colombia, by indigenous peoples of the Tupi-Guarani, Tucano and Arawak linguistic fa
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 0x4dea37c592fdc67220237ff5303e1c2bf800d8cdeda40d6d6c603ce7ea8b806c. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8da336a3-7c3b-4081-b6cd-8cf72c09a151.json and https://artists.proofprofile.net/proofs/artist/8da336a3-7c3b-4081-b6cd-8cf72c09a151.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).