Heart Strings Mandarin
type: MusicGroup
popularity: 4
followers: 128
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x31e7078dd09839932983f89cfabf3a0a29b732faad39c62d0f17cbf158cc7acb
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954573
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954573
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b48543d2-a220-4e9a-aecd-ed349182365d.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b48543d2-a220-4e9a-aecd-ed349182365d.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/b48543d2-a220-4e9a-aecd-ed349182365d
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T15:45:29Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x31e7078dd09839932983f89cfabf3a0a29b732faad39c62d0f17cbf158cc7acb","name":"Heart Strings Mandarin","registered_at":"2026-06-20T14:12:52Z","symbol":"NIM1627556","token_address":"0xd9d5a7f61d1083c792752def798518ab63d0dfc5","type":"artist","uuid":"b48543d2-a220-4e9a-aecd-ed349182365d"}
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 0x31e7078dd09839932983f89cfabf3a0a29b732faad39c62d0f17cbf158cc7acb. Chain 2 (Bitcoin): anchored in block 954573 (2026-06-20T15:45:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b48543d2-a220-4e9a-aecd-ed349182365d.json and https://artists.proofprofile.net/proofs/artist/b48543d2-a220-4e9a-aecd-ed349182365d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T15:45:29Z
  text: {"copyright_id":"0x31e7078dd09839932983f89cfabf3a0a29b732faad39c62d0f17cbf158cc7acb","name":"Heart Strings Mandarin","registered_at":"2026-06-20T14:12:52Z","symbol":"NIM1627556","token_address":"0xd9d5a7f61d1083c792752def798518ab63d0dfc5","type":"artist","uuid":"b48543d2-a220-4e9a-aecd-ed349182365d"}
album: 你好，你好吗?
  type: MusicAlbum
  date published: 2021-12-01
album: 春天到
  type: MusicAlbum
  date published: 2022-09-08