Cosima De Vito (born 1 November 1976), also known as Cosima, is an Australian pop and R&B singer-songwriter. Born and raised in Perth, Western Australia, she is best known for her cover of the classic
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 0x2411daae7f54ed20c5f57e27abd70d97b5f73ab5e5e6aeb1fc44957ffea8ba15. Chain 2 (Bitcoin): anchored in block 953641 (2026-06-14T13:54:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3be595a6-2ea3-4dbe-977f-58c930dea051.json and https://artists.proofprofile.net/proofs/artist/3be595a6-2ea3-4dbe-977f-58c930dea051.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).