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 0xd1ec66691f0e96ae4dcd46a9089e9e5fee796d932ac85f6e24766086e98eed24. 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/4d5560b7-da77-4e01-a027-8d5b99b5220b.json and https://artists.proofprofile.net/proofs/artist/4d5560b7-da77-4e01-a027-8d5b99b5220b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
أناشيد أبو الجود (الألبوم الثاني) درب الهدى دربي
أناشيد أبو الجود (الألبوم الثالث) أيها البلبل