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 0x4ac25e3e2c42d33ec978a9aef2d401f9a03baf4d39d86e4e30160b6a6cfd9bfd. 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/8e957aa2-02df-406f-8567-201655d897a9.json and https://artists.proofprofile.net/proofs/artist/8e957aa2-02df-406f-8567-201655d897a9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Sourates Al Furqane, Saba, Az Zumar, Ad Dukhan, Al Jatiyah, Al Ahqaf (Quran - Coran - Islam)
Sourate Al Fatiha (Quran - Coran - Islam)
Sourates Muhammad, Arrahmane, Al Waqia, Al Hadid, Al Mujadalah, Al Hashr, Al Mumtahanah, As Saff (Quran - Coran - Islam)
Sourates Al Maarij, Al Jinn, Al Muzzamil, Al Muddathir, Al Qiyamah, Al Inssane, Al Mursalate (Quran - Coran - Islam)