はぁち
type: MusicGroup
popularity: 11
followers: 163
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x6a1b47583cc4db3e27721f3c544feb56bca492e54c6affb226ce58e7af7cb5a2
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953707
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953707
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7d262bc8-e377-458e-9f82-b745bea03799.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7d262bc8-e377-458e-9f82-b745bea03799.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/7d262bc8-e377-458e-9f82-b745bea03799
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T23:22:21Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x6a1b47583cc4db3e27721f3c544feb56bca492e54c6affb226ce58e7af7cb5a2","name":"はぁち","registered_at":"2026-06-14T17:37:19Z","symbol":"NIM0526732","token_address":"0xeaa804de71a2ac2cddd34c4ffc45a653942d023c","type":"artist","uuid":"7d262bc8-e377-458e-9f82-b745bea03799"}
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 0x6a1b47583cc4db3e27721f3c544feb56bca492e54c6affb226ce58e7af7cb5a2. Chain 2 (Bitcoin): anchored in block 953707 (2026-06-14T23:22:21Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7d262bc8-e377-458e-9f82-b745bea03799.json and https://artists.proofprofile.net/proofs/artist/7d262bc8-e377-458e-9f82-b745bea03799.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T23:22:21Z
  text: {"copyright_id":"0x6a1b47583cc4db3e27721f3c544feb56bca492e54c6affb226ce58e7af7cb5a2","name":"はぁち","registered_at":"2026-06-14T17:37:19Z","symbol":"NIM0526732","token_address":"0xeaa804de71a2ac2cddd34c4ffc45a653942d023c","type":"artist","uuid":"7d262bc8-e377-458e-9f82-b745bea03799"}
album: アバウト・ミー ～わたしのためのうた～
  type: MusicAlbum
  date published: 2025-03-17
album: ♯はっぴーにゃんだーらんど！
  type: MusicAlbum
  date published: 2025-04-27