Matchstick
type: MusicGroup
popularity: 4
followers: 42
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xdad935b545e4b0a3a868e05e2b6480fbd359d992864608f511e0d6581f38edee
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953918
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953918
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1ab25e7c-29c8-4a0c-a509-6dd7c0ccacf5.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1ab25e7c-29c8-4a0c-a509-6dd7c0ccacf5.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/1ab25e7c-29c8-4a0c-a509-6dd7c0ccacf5
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T08:55:04Z
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 0xdad935b545e4b0a3a868e05e2b6480fbd359d992864608f511e0d6581f38edee. Chain 2 (Bitcoin): anchored in block 953997 (2026-06-16T20:07:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1ab25e7c-29c8-4a0c-a509-6dd7c0ccacf5.json and https://artists.proofprofile.net/proofs/artist/1ab25e7c-29c8-4a0c-a509-6dd7c0ccacf5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T20:07:57Z
album: What's important to you?
  type: MusicAlbum
  date published: 2021-12-18
album: 守りたいものはあるかい
  type: MusicAlbum
  date published: 2021-12-18
album: Star
  type: MusicAlbum
  date published: 2022-05-25
album: Star
  type: MusicAlbum
  date published: 2022-05-25
album: Good Night
  type: MusicAlbum
  date published: 2022-10-29
album: Good Night
  type: MusicAlbum
  date published: 2022-10-29
album: farewell
  type: MusicAlbum
  date published: 2023-05-27
album: 暇乞い
  type: MusicAlbum
  date published: 2023-05-27
album: 今を生きる
  type: MusicAlbum
  date published: 2023-06-30
album: Seize The Day
  type: MusicAlbum
  date published: 2023-06-30
album: Fin
  type: MusicAlbum
  date published: 2023-08-19
album: Fin
  type: MusicAlbum
  date published: 2023-08-19
album: ウルフマン
  type: MusicAlbum
  date published: 2023-12-16
album: Wolfman
  type: MusicAlbum
  date published: 2023-12-16
album: Memento mori
  type: MusicAlbum
  date published: 2024-05-11
album: Memento mori
  type: MusicAlbum
  date published: 2024-05-11
album: 球体
  type: MusicAlbum
  date published: 2024-10-22
album: Circle
  type: MusicAlbum
  date published: 2024-10-22