Törf
type: MusicGroup
popularity: 6
followers: 89
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xf0890aef43b0c3df75feff6ae48f350c1940dda816fae585219894740b1edf44
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/8a4dbc4e-019d-46f1-b758-845943c6882f.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/8a4dbc4e-019d-46f1-b758-845943c6882f.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/8a4dbc4e-019d-46f1-b758-845943c6882f
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:22:39Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xf0890aef43b0c3df75feff6ae48f350c1940dda816fae585219894740b1edf44","name":"Törf","registered_at":"2026-06-17T13:41:03Z","symbol":"NIM1412813","token_address":"0x4d5722fd4cbb70e5992e30ef2190580b95a7c7b4","type":"artist","uuid":"8a4dbc4e-019d-46f1-b758-845943c6882f"}
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 0xf0890aef43b0c3df75feff6ae48f350c1940dda816fae585219894740b1edf44. 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/8a4dbc4e-019d-46f1-b758-845943c6882f.json and https://artists.proofprofile.net/proofs/artist/8a4dbc4e-019d-46f1-b758-845943c6882f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:22:39Z
  text: {"copyright_id":"0xf0890aef43b0c3df75feff6ae48f350c1940dda816fae585219894740b1edf44","name":"Törf","registered_at":"2026-06-17T13:41:03Z","symbol":"NIM1412813","token_address":"0x4d5722fd4cbb70e5992e30ef2190580b95a7c7b4","type":"artist","uuid":"8a4dbc4e-019d-46f1-b758-845943c6882f"}
album: 't Braide Woater
  type: MusicAlbum
  date published: 1993-11-07
album: Dr is 'n Laand
  type: MusicAlbum
  date published: 1996-12-05
album: Speelt Beukema
  type: MusicAlbum
  date published: 1998-11-11
album: Op Roemte
  type: MusicAlbum
  date published: 2001-11-14
  track: Tammo's Priel
    type: MusicRecording
    duration: PT3M17S
    duration ms: 197400
    explicit: false
    by artist: Törf
    in album: Op Roemte
      type: MusicAlbum
      date published: 2001-11-14
    isrc code: QZTAY2299362
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-05T23:36:12+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x29e38957b85045f6bd25e24c4b5521b0ffa72b92388c7d508d3a981e8a96fb52
    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/QZTAY2299362
    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 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 0x29e38957b85045f6bd25e24c4b5521b0ffa72b92388c7d508d3a981e8a96fb52. 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/QZTAY2299362.
      date published: 2026-07-06T01:25:57Z
    audio: Tammo's Priel
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 75.915
      additional property: Musical Key
        type: PropertyValue
        value: 5
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.386
      additional property: Energy
        type: PropertyValue
        value: 0.24
      additional property: Speechiness
        type: PropertyValue
        value: 0.031
      additional property: Acousticness
        type: PropertyValue
        value: 0.9
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.004
      additional property: Liveness
        type: PropertyValue
        value: 0.118
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.437
      additional property: Loudness (dB)
        type: PropertyValue
        value: -13.82
      additional property: Key Name
        type: PropertyValue
        value: F
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Olipodrigo
  type: MusicAlbum
  date published: 2006-11-14
album: Schoon van de wind
  type: MusicAlbum
  date published: 2009-11-21
album: Dichten
  type: MusicAlbum
  date published: 2015-11-21