Daizy Stavropoulou (; also transliterated Daisy Stavropoulou, Daizi Stavropoulou; c. 1912 – 1994) was a Greek rebetiko singer active approximately 1940-1946. Biography Daizy Stavropoulou was born in
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 0x24d9d3654f35a6982f665e44ef3201dde5380010faf1dbb41ba955c67964103b. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4aadaed5-b0dd-49ea-ad8a-7ff679ffbfa4.json and https://artists.proofprofile.net/proofs/artist/4aadaed5-b0dd-49ea-ad8a-7ff679ffbfa4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).