昼カフェ
type: MusicGroup
popularity: 4
followers: 6
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x873f0f0a83a7c5231e0ccbb76e5171c5bbe1a41d7aeb5975957867a64c1fe57d
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953958
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953958
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/274ff1bf-a259-4e83-af70-e42c6650ee35.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/274ff1bf-a259-4e83-af70-e42c6650ee35.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/274ff1bf-a259-4e83-af70-e42c6650ee35
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T14:52:44Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x873f0f0a83a7c5231e0ccbb76e5171c5bbe1a41d7aeb5975957867a64c1fe57d","name":"昼カフェ","registered_at":"2026-06-16T03:12:51Z","symbol":"NIM0919434","token_address":"0x7b1078802690ac0614a006c03d24c17929fa0f85","type":"artist","uuid":"274ff1bf-a259-4e83-af70-e42c6650ee35"}
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x873f0f0a83a7c5231e0ccbb76e5171c5bbe1a41d7aeb5975957867a64c1fe57d. Chain 2 (Bitcoin): anchored in block 953959 (2026-06-16T14:51:55Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/274ff1bf-a259-4e83-af70-e42c6650ee35.json and https://artists.proofprofile.net/proofs/artist/274ff1bf-a259-4e83-af70-e42c6650ee35.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T14:51:55Z
  text: {"copyright_id":"0x873f0f0a83a7c5231e0ccbb76e5171c5bbe1a41d7aeb5975957867a64c1fe57d","name":"昼カフェ","registered_at":"2026-06-16T03:12:51Z","symbol":"NIM0919434","token_address":"0x7b1078802690ac0614a006c03d24c17929fa0f85","type":"artist","uuid":"274ff1bf-a259-4e83-af70-e42c6650ee35"}
album: カフェテラス音楽 - コーヒーに合うボサノバギター音楽
  type: MusicAlbum
  date published: 2024-01-19
album: ボサノバテラス音楽：外でリラックス息抜きサウンド・カフェ海辺リゾート朝活
  type: MusicAlbum
  date published: 2024-10-15
album: ボサノバテラス音楽：外でリラックス息抜きサウンド・カフェ海辺リゾート朝活
  type: MusicAlbum
  date published: 2024-10-15