The Ottoman Turkish magazine Hamiyet ("patriotism") appeared in Istanbul in 1886 with a total of 17 issues.Hamiyet (1886): 1st Vol, 1st issue. See also Media of the Ottoman Empire References Categ
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 0xa5a726b51d5409594c570c57e1f898d3829035a74f23f718b81382e383d1235c. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/94715877-5a6f-4cbb-8836-c402c4a5e0c8.json and https://artists.proofprofile.net/proofs/artist/94715877-5a6f-4cbb-8836-c402c4a5e0c8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).