清水 悠
type: MusicGroup
popularity: 2
followers: 120
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x8533a80f646ace770e27663bb1cf9d610787bbbcb8a3a0d7f7c01eb57e875e74
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954093
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954093
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7af281de-4067-474e-a698-7256c9741b85.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7af281de-4067-474e-a698-7256c9741b85.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/7af281de-4067-474e-a698-7256c9741b85
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T12:13:19Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x8533a80f646ace770e27663bb1cf9d610787bbbcb8a3a0d7f7c01eb57e875e74","name":"清水 悠","registered_at":"2026-06-17T08:25:01Z","symbol":"NIM1337529","token_address":"0xa99765c20624ea15f10f1dd87a34a0c2c8912cbe","type":"artist","uuid":"7af281de-4067-474e-a698-7256c9741b85"}
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 0x8533a80f646ace770e27663bb1cf9d610787bbbcb8a3a0d7f7c01eb57e875e74. Chain 2 (Bitcoin): anchored in block 954093 (2026-06-17T12:13:19Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7af281de-4067-474e-a698-7256c9741b85.json and https://artists.proofprofile.net/proofs/artist/7af281de-4067-474e-a698-7256c9741b85.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T12:13:19Z
  text: {"copyright_id":"0x8533a80f646ace770e27663bb1cf9d610787bbbcb8a3a0d7f7c01eb57e875e74","name":"清水 悠","registered_at":"2026-06-17T08:25:01Z","symbol":"NIM1337529","token_address":"0xa99765c20624ea15f10f1dd87a34a0c2c8912cbe","type":"artist","uuid":"7af281de-4067-474e-a698-7256c9741b85"}
album: Kodō
  type: MusicAlbum
  date published: 2019-02-21
album: 素晴らしき日々 (NEWクレラップ「料理にフツウなんてない」篇 CMソング)
  type: MusicAlbum
  date published: 2021-03-22
album: Dance In The Sun
  type: MusicAlbum
  date published: 2025-03-09