thumb|Tadami River and Tadami Line thumb|Ōuchi-juku thumb|Akabeko is the westernmost of the three regions of Fukushima Prefecture, Japan, the other two regions being Nakadōri in the central area of t
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 0xa2c148c70e32186ca9f4421c192c1a86ef805bb620644c9e655cc07a412a00e1. Chain 2 (Bitcoin): anchored in block 953947 (2026-06-16T13:14:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/23c3684a-8d99-4e1b-8d92-99366e5b3a10.json and https://artists.proofprofile.net/proofs/artist/23c3684a-8d99-4e1b-8d92-99366e5b3a10.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Un Recuerdo Para Siempre Si Me Volvieras A Llamar (VIP)
Un Recuerdo Para Siempre Si Me Volvieras A Llamar