DalgaAlso spelled Delga, Delja, Dilja (; ) is a village of about 120,000 people in Minya Governorate in Egypt. It is the largest village in Egypt and the second largest in Africa behind Saaba, Burkina
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0820bf58def537cfb6ac3891eb63149d62cffab802355a72c5d7e3b40e90a4c. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6ad3192f-179a-4ee7-80bf-88d4b8dea2e1.json and https://artists.proofprofile.net/proofs/artist/6ad3192f-179a-4ee7-80bf-88d4b8dea2e1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).