MASA亀
type: MusicGroup
popularity: 2
followers: 2
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xfec1c82884814b404ee2f8578ba42a17c9240f3bc7200e19fa94d76509b3b1e4
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954065
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954065
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/4c934a00-7d47-40b5-b7d4-234f684802b5.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/4c934a00-7d47-40b5-b7d4-234f684802b5.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/4c934a00-7d47-40b5-b7d4-234f684802b5
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:10:43Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xfec1c82884814b404ee2f8578ba42a17c9240f3bc7200e19fa94d76509b3b1e4","name":"MASA亀","registered_at":"2026-06-16T16:20:34Z","symbol":"NIM1107444","token_address":"0x1ba93b500d3193a79679c63c9633c46ccff4f5f8","type":"artist","uuid":"4c934a00-7d47-40b5-b7d4-234f684802b5"}
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfec1c82884814b404ee2f8578ba42a17c9240f3bc7200e19fa94d76509b3b1e4. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4c934a00-7d47-40b5-b7d4-234f684802b5.json and https://artists.proofprofile.net/proofs/artist/4c934a00-7d47-40b5-b7d4-234f684802b5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:10:43Z
  text: {"copyright_id":"0xfec1c82884814b404ee2f8578ba42a17c9240f3bc7200e19fa94d76509b3b1e4","name":"MASA亀","registered_at":"2026-06-16T16:20:34Z","symbol":"NIM1107444","token_address":"0x1ba93b500d3193a79679c63c9633c46ccff4f5f8","type":"artist","uuid":"4c934a00-7d47-40b5-b7d4-234f684802b5"}
album: 音の神殿 Ⅱ
  type: MusicAlbum
  date published: 2025-06-27
album: 音の神殿Ⅲ
  type: MusicAlbum
  date published: 2025-07-16
album: 音の神殿４
  type: MusicAlbum
  date published: 2025-07-25
album: 未来
  type: MusicAlbum
  date published: 2025-08-01
album: 夜の秋風
  type: MusicAlbum
  date published: 2025-10-15
album: 初雪と記憶
  type: MusicAlbum
  date published: 2025-10-16
album: Bounce Back～jibun o torimodose
  type: MusicAlbum
  date published: 2025-11-07
album: 禅
  type: MusicAlbum
  date published: 2025-11-07