K-Roww鴉
type: MusicGroup
genre: folk metal
popularity: 16
followers: 433
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x03139cbf7c68eeb83cfffb1808cdbcdcca86831c73d188a686cc9a0aeac8e365
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953741
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953741
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9f194660-9ab6-478f-9776-5c18ab6902e3.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9f194660-9ab6-478f-9776-5c18ab6902e3.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/9f194660-9ab6-478f-9776-5c18ab6902e3
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T04:44:49Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x03139cbf7c68eeb83cfffb1808cdbcdcca86831c73d188a686cc9a0aeac8e365","name":"K-Roww鴉","registered_at":"2026-06-14T21:10:54Z","symbol":"NIM0577613","token_address":"0xccef7cb3220c749d06054b9d3779aac438ad531d","type":"artist","uuid":"9f194660-9ab6-478f-9776-5c18ab6902e3"}
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 0x03139cbf7c68eeb83cfffb1808cdbcdcca86831c73d188a686cc9a0aeac8e365. Chain 2 (Bitcoin): anchored in block 953741 (2026-06-15T04:44:49Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9f194660-9ab6-478f-9776-5c18ab6902e3.json and https://artists.proofprofile.net/proofs/artist/9f194660-9ab6-478f-9776-5c18ab6902e3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T04:44:49Z
  text: {"copyright_id":"0x03139cbf7c68eeb83cfffb1808cdbcdcca86831c73d188a686cc9a0aeac8e365","name":"K-Roww鴉","registered_at":"2026-06-14T21:10:54Z","symbol":"NIM0577613","token_address":"0xccef7cb3220c749d06054b9d3779aac438ad531d","type":"artist","uuid":"9f194660-9ab6-478f-9776-5c18ab6902e3"}
album: 名為寂寞的現代詩
  type: MusicAlbum
  date published: 2023-12-21
album: 流量密碼
  type: MusicAlbum
  date published: 2024-10-07
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  type: MusicAlbum
  date published: 2024-08-14
album: 反派角色
  type: MusicAlbum
  date published: 2024-07-22