is a limited express train service operated by Hokkaido Railway Company (JR Hokkaido) between and in Hokkaido, Japan. The current limited express service was introduced in July 1992, but the name w
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 0xe449406a7271d4b0c653260d5ea220470e89225a644eb3ec281804d238897914. Chain 2 (Bitcoin): anchored in block 953973 (2026-06-16T16:37:07Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2a28ea32-acc3-45ce-942b-cb4c89c7983f.json and https://artists.proofprofile.net/proofs/artist/2a28ea32-acc3-45ce-942b-cb4c89c7983f.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
From Now On (Ima Kokokara English Version)
I Wanna Be a Giant Panda (Japanese version)