kammycat
type: MusicGroup
popularity: 2
followers: 6
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xb0ea468861ebcd3b7ea19bd4077bd692843ba00fea575fa9de99d1c89b49045a
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/6f1025ff-5e77-479d-8180-a7a18ffec8ee.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/6f1025ff-5e77-479d-8180-a7a18ffec8ee.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/6f1025ff-5e77-479d-8180-a7a18ffec8ee
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 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 0xb0ea468861ebcd3b7ea19bd4077bd692843ba00fea575fa9de99d1c89b49045a. 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/6f1025ff-5e77-479d-8180-a7a18ffec8ee.json and https://artists.proofprofile.net/proofs/artist/6f1025ff-5e77-479d-8180-a7a18ffec8ee.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
album: 小提琴曲世界名曲 小提琴经典名曲独奏曲 小提琴独奏曲 小提琴纯音乐
  type: MusicAlbum
  date published: 2023-10-30
album: 疗愈音乐治愈心灵的轻音乐 古典小提琴世界名曲 小提琴独奏曲 小提琴唯美纯音乐 小提琴练习曲
  type: MusicAlbum
  date published: 2024-04-03
album: 小提琴纯音乐 怀旧金曲之夜 小提琴流行曲集锦 小提琴纯音乐精选
  type: MusicAlbum
  date published: 2025-03-15