Hafez Shirazi (1325–1390) was a Persian lyric poet whose collected works are regarded by many Iranians as one of the highest pinnacles of Persian literature. His works are often found in the homes of
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 0x647a2466096a3adaec5d334c38c1d1b4386b9d3ef55308b7c0281709487e410f. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/848edfad-d660-4aa8-815c-f4e8e600721c.json and https://artists.proofprofile.net/proofs/artist/848edfad-d660-4aa8-815c-f4e8e600721c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).