Eva Corrêa José Maria (born 17 September 1951), known professionally as Evinha, is a Brazilian singer. Life and career Born in Rio de Janeiro, Evinha began her professional career in 1961 as a mem
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 0xd0c2e289ae69f15acb4827f4dad21cbe33f3998b139a822291e24996d6cfc161. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4b3f92e3-ca7a-4906-865f-71d42aa87760.json and https://artists.proofprofile.net/proofs/artist/4b3f92e3-ca7a-4906-865f-71d42aa87760.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).