Poem
type: MusicGroup
popularity: 2
followers: 19
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x8c6b751c8d00616542f1d7d9a7e2483e6aa55541714db5a39e17715eb0f5c3bc
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954066
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954066
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/65405daf-842b-4069-843e-5b813cfc01a8.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/65405daf-842b-4069-843e-5b813cfc01a8.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/65405daf-842b-4069-843e-5b813cfc01a8
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
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 0x8c6b751c8d00616542f1d7d9a7e2483e6aa55541714db5a39e17715eb0f5c3bc. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/65405daf-842b-4069-843e-5b813cfc01a8.json and https://artists.proofprofile.net/proofs/artist/65405daf-842b-4069-843e-5b813cfc01a8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
album: 月の約束 (ピアノVer.)
  type: MusicAlbum
  date published: 2024-01-09
album: 紫陽花ストリート (ピアノVer.)
  type: MusicAlbum
  date published: 2024-04-22
album: きらめき (ピアノVer.)
  type: MusicAlbum
  date published: 2024-07-01
album: 冬模様 (リコーダー&ピアノVer.)
  type: MusicAlbum
  date published: 2024-09-09
album: 春夏秋冬アルバム
  type: MusicAlbum
  date published: 2024-12-16
album: きらめき
  type: MusicAlbum
  date published: 2024-12-26
album: 紫陽花ストリート
  type: MusicAlbum
  date published: 2025-01-06
album: 冬模様
  type: MusicAlbum
  date published: 2025-01-09
album: 月の約束
  type: MusicAlbum
  date published: 2025-01-09
album: FREE (instrumental)
  type: MusicAlbum
  date published: 2025-01-27
album: Naive (instrumental)
  type: MusicAlbum
  date published: 2025-02-21
album: FREE
  type: MusicAlbum
  date published: 2025-02-25
album: Naive
  type: MusicAlbum
  date published: 2025-02-28
album: ENDING (instrumental)
  type: MusicAlbum
  date published: 2025-06-09
album: ENDING
  type: MusicAlbum
  date published: 2025-07-07
album: 時間
  type: MusicAlbum
  date published: 2025-08-08
album: 時間
  type: MusicAlbum
  date published: 2025-10-14