Fell Line
type: MusicGroup
genre: traditional music
popularity: 3
followers: 92
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x11c89e756cacdfe7ddcb00d57615319f81f7d372e20eab18baabac9608708641
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954342
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954342
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/8dad0029-5980-49f6-b336-f468b4ab22ce.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/8dad0029-5980-49f6-b336-f468b4ab22ce.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/8dad0029-5980-49f6-b336-f468b4ab22ce
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:22:39Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x11c89e756cacdfe7ddcb00d57615319f81f7d372e20eab18baabac9608708641","name":"Fell Line","registered_at":"2026-06-17T14:50:38Z","symbol":"NIM1429418","token_address":"0xc707a49e08e0db67c365781edfe067a5ce346e46","type":"artist","uuid":"8dad0029-5980-49f6-b336-f468b4ab22ce"}
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 0x11c89e756cacdfe7ddcb00d57615319f81f7d372e20eab18baabac9608708641. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8dad0029-5980-49f6-b336-f468b4ab22ce.json and https://artists.proofprofile.net/proofs/artist/8dad0029-5980-49f6-b336-f468b4ab22ce.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:22:39Z
  text: {"copyright_id":"0x11c89e756cacdfe7ddcb00d57615319f81f7d372e20eab18baabac9608708641","name":"Fell Line","registered_at":"2026-06-17T14:50:38Z","symbol":"NIM1429418","token_address":"0xc707a49e08e0db67c365781edfe067a5ce346e46","type":"artist","uuid":"8dad0029-5980-49f6-b336-f468b4ab22ce"}
album: Cannabeenie / Dark Days & Cauld Nichts
  type: MusicAlbum
  date published: 2024-12-06
album: The Kids' Beer Tent
  type: MusicAlbum
  date published: 2025-01-24
album: Hökköpolska
  type: MusicAlbum
  date published: 2025-03-21
  track: Hökköpolska
    type: MusicRecording
    duration: PT4M22S
    duration ms: 262933
    explicit: false
    by artist: Fell Line
    in album: Hökköpolska
      type: MusicAlbum
      date published: 2025-03-21
    genre: traditional music
    isrc code: GXF8G2400003
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-21T01:21:04+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xadf1522d225a4d1f1c4e2baed7f5510d14ddb498d90326f17abe361e8820eceb
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958951
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958951
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GXF8G2400003
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-21T04:23:12Z
    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 0xadf1522d225a4d1f1c4e2baed7f5510d14ddb498d90326f17abe361e8820eceb. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:23:12Z), 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/GXF8G2400003.
      date published: 2026-07-21T04:23:12Z
    audio: Hökköpolska
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 101.941
      additional property: Musical Key
        type: PropertyValue
        value: 4
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.404
      additional property: Energy
        type: PropertyValue
        value: 0.303
      additional property: Speechiness
        type: PropertyValue
        value: 0.028
      additional property: Acousticness
        type: PropertyValue
        value: 0.863
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.014
      additional property: Liveness
        type: PropertyValue
        value: 0.227
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.275
      additional property: Loudness (dB)
        type: PropertyValue
        value: -8.956
      additional property: Key Name
        type: PropertyValue
        value: E
      additional property: Mode Name
        type: PropertyValue
        value: Minor