is a Japanese manga series written and illustrated by Atsushi Ohkubo. Set at the "Death Weapon Meister Academy", the series revolves around three teams, each consisting of a weapon meister and at lea
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 0x75933153fd6668f7b5b77a0108ee0a3a0a138a3973e1eab77b04b5c3d9094b54. 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/982e4961-d6f4-4260-9e0a-29ea324075c5.json and https://artists.proofprofile.net/proofs/artist/982e4961-d6f4-4260-9e0a-29ea324075c5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Seasons of Passage spring (2025 Remaster)
Seasons of Passage 和の旅路 冬 (2025 Remaster)
Seasons of Passage summer (2025 Remaster)
Seasons of Passage 和の旅路 夏 (2025 Remaster)
Seasons of Passage winter (2025 Remaster)