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 0x7edaa5743a1d424b9091ec2b96ce385fa0d842b51ed1074393e585866a3e78b3. 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/75be87da-68dd-4e8c-a866-aad8045f6aa8.json and https://artists.proofprofile.net/proofs/artist/75be87da-68dd-4e8c-a866-aad8045f6aa8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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Sourates Maryam, Ta Ha (Quran - Coran - Islam)
Sourates Ar Raad, Ibrahim, Al Hijr (Quran - Coran - Islam)
Sourates Ar Rum, Luqman, As Sajda, Al Ahzab (Quran - Coran - Islam)
Sourates Al Anbiya, Al Hajj, Al Muminune (Quran - Coran - Islam)
Sourate Al Fatiha (Quran - Coran - Islam)
Sourates Ghafir, Fussilat, Achoura, Az Zukhruf (Quran - Coran - Islam)
Sourates An Nahl, Al Isra, Al Kahf (Quran - Coran - Islam)
Sourates Saba, Fatir, Ya Sin (Quran - Coran - Islam)
Sourates Naml, Al Qassas, Al Ankabut (Quran - Coran - Islam)
Sourates An Nur, Al Furqane, As Shuaraa (Quran - Coran - Islam)
Sourate At Tawbah (Quran - Coran - Islam)
Sourates As Saffat, Sad, Az Zumar (Quran - Coran - Islam)
Sourate Al Aaraf (Quran - Coran - Islam)
Sourate Al Maidah (Quran - Coran - Islam)
Sourate Al Imran (Quran - Coran - Islam)
Sourate Al Anfal (Quran - Coran - Islam)
Sourate Al Baqara (Quran - Coran - Islam)