Carolina Calvache is a jazz pianist, arranger and composer from Colombia. Career Calvache was born in Cali, Colombia in 1985. Her debut album Sotareno was released by Sunnyside Records in 2014. La
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 0x1a95c16a1cb0f36b1b66944cb8723b626db9fce33b3392a8a313b9482a805072. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f4ef3aa8-7156-4338-a77c-b960b844d9c2.json and https://artists.proofprofile.net/proofs/artist/f4ef3aa8-7156-4338-a77c-b960b844d9c2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).