Danai Stratigopoulou (; 8 February 1913 – 18 January 2009) was a Greek singer, writer, and university academic. She acquired recognition in the literary world for translating the works of the Chilean
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 0x35b0a1469be1663cf9f0f38958bd47efe1d7174ba8431b1e9dea1b093233cec1. Chain 2 (Bitcoin): anchored in block 954533 (2026-06-20T08:57:02Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a7510dce-dd57-4fe8-967e-7dfdf6ef6ba6.json and https://artists.proofprofile.net/proofs/artist/a7510dce-dd57-4fe8-967e-7dfdf6ef6ba6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
I Danai Sta Pio Omorfa Tragoudia Tou Attik