Love Letter!
type: MusicGroup
genre: gothic metal
popularity: 3
followers: 235
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xea3b8df586769f3103ee48a1b963352d745ddfde199858a2939eb1e72c260850
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953947
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953947
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/21fe0489-f96c-4cc3-910b-fdfa745cecbd.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/21fe0489-f96c-4cc3-910b-fdfa745cecbd.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/21fe0489-f96c-4cc3-910b-fdfa745cecbd
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T13:14:26Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xea3b8df586769f3103ee48a1b963352d745ddfde199858a2939eb1e72c260850","name":"Love Letter!","registered_at":"2026-06-16T01:41:15Z","symbol":"NIM0897553","token_address":"0x1774c79a0c3161f337110dbdd0621d741ce294ac","type":"artist","uuid":"21fe0489-f96c-4cc3-910b-fdfa745cecbd"}
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 0xea3b8df586769f3103ee48a1b963352d745ddfde199858a2939eb1e72c260850. Chain 2 (Bitcoin): anchored in block 953947 (2026-06-16T13:14:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/21fe0489-f96c-4cc3-910b-fdfa745cecbd.json and https://artists.proofprofile.net/proofs/artist/21fe0489-f96c-4cc3-910b-fdfa745cecbd.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T13:14:26Z
  text: {"copyright_id":"0xea3b8df586769f3103ee48a1b963352d745ddfde199858a2939eb1e72c260850","name":"Love Letter!","registered_at":"2026-06-16T01:41:15Z","symbol":"NIM0897553","token_address":"0x1774c79a0c3161f337110dbdd0621d741ce294ac","type":"artist","uuid":"21fe0489-f96c-4cc3-910b-fdfa745cecbd"}
album: Love Letter (Demos)
  type: MusicAlbum
  date published: 2023-04-10
album: Love Letter (Demos)
  type: MusicAlbum
  date published: 2023-04-10
album: Save Me
  type: MusicAlbum
  date published: 2023-10-20
album: Save Me (Demo)
  type: MusicAlbum
  date published: 2023-10-20
album: Mother Superior
  type: MusicAlbum
  date published: 2024-06-14
  track: Inferno
    type: MusicRecording
    duration: PT2M44S
    duration ms: 164188
    explicit: false
    by artist: Love Letter!
    in album: Mother Superior
      type: MusicAlbum
      date published: 2024-06-14
    genre: gothic metal
    isrc code: QZTRX2429637
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-05T22:51:26+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xa28953c6924a6e99785c6ea960d5148f34652ffb0c2a5bbcbd11fc7d0838eba5
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956856
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956856
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTRX2429637
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-06T01:25:57Z
    additional property: OTSVerifyInstructions
      type: PropertyValue
      value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 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. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa28953c6924a6e99785c6ea960d5148f34652ffb0c2a5bbcbd11fc7d0838eba5. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTRX2429637.
      date published: 2026-07-06T01:25:57Z
    audio: Inferno
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 177.789
      additional property: Musical Key
        type: PropertyValue
        value: 2
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.412
      additional property: Energy
        type: PropertyValue
        value: 0.781
      additional property: Speechiness
        type: PropertyValue
        value: 0.109
      additional property: Acousticness
        type: PropertyValue
        value: 0
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.737
      additional property: Liveness
        type: PropertyValue
        value: 0.342
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.512
      additional property: Loudness (dB)
        type: PropertyValue
        value: -6.393
      additional property: Key Name
        type: PropertyValue
        value: D
      additional property: Mode Name
        type: PropertyValue
        value: Major