Larz
type: MusicGroup
genre: afrobeats
genre: afroswing
description: Larz may refer to: Lärz, a municipality in Germany Larz, a given name; people with the name include: Larz Anderson (1866–1937), American diplomat Larz Bourne (1916–1993), American cartoon writer
popularity: 20
followers: 255
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xbab32048cab6bad3909901e9a2a0b1a762f97bfc073bd43b6f2c12e8d8d70071
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953786
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953786
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d73ea825-b941-4956-9e2b-290e5fb4cd61.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d73ea825-b941-4956-9e2b-290e5fb4cd61.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/d73ea825-b941-4956-9e2b-290e5fb4cd61
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T12:56:12Z
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 0xbab32048cab6bad3909901e9a2a0b1a762f97bfc073bd43b6f2c12e8d8d70071. Chain 2 (Bitcoin): anchored in block 953786 (2026-06-15T12:56:12Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d73ea825-b941-4956-9e2b-290e5fb4cd61.json and https://artists.proofprofile.net/proofs/artist/d73ea825-b941-4956-9e2b-290e5fb4cd61.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T12:56:12Z
album: Tender
  type: MusicAlbum
  date published: 2023-04-05
album: Tender Remix
  type: MusicAlbum
  date published: 2023-08-11
album: Close
  type: MusicAlbum
  date published: 2023-09-27
album: N.W.L
  type: MusicAlbum
  date published: 2024-04-10
album: SZN
  type: MusicAlbum
  date published: 2024-08-15
album: Mix SZN
  type: MusicAlbum
  date published: 2024-10-19
  track: CAFRO
    type: MusicRecording
    duration: PT2M32S
    duration ms: 152903
    explicit: false
    by artist: Larz
    in album: Mix SZN
      type: MusicAlbum
      date published: 2024-10-19
    genre: afrobeats
    genre: afroswing
    isrc code: QZWFS2437169
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-03T23:09:03+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xbec817abfc999f30024cd4e4a3c9e8f331f09bd45804fe3106cb3b72b7d8d569
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956634
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956634
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFS2437169
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-04T10:04:33Z
    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 0xbec817abfc999f30024cd4e4a3c9e8f331f09bd45804fe3106cb3b72b7d8d569. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZWFS2437169.
      date published: 2026-07-04T10:04:33Z
    audio: CAFRO
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 119.982
      additional property: Musical Key
        type: PropertyValue
        value: 11
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.893
      additional property: Energy
        type: PropertyValue
        value: 0.744
      additional property: Speechiness
        type: PropertyValue
        value: 0.079
      additional property: Acousticness
        type: PropertyValue
        value: 0.15
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.001
      additional property: Liveness
        type: PropertyValue
        value: 0.119
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.443
      additional property: Loudness (dB)
        type: PropertyValue
        value: -8.182
      additional property: Key Name
        type: PropertyValue
        value: B
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Mix SZN (Sped Up)
  type: MusicAlbum
  date published: 2024-10-22
album: Tuesday
  type: MusicAlbum
  date published: 2025-04-29
album: OMO TO DUN
  type: MusicAlbum
  date published: 2025-07-12
album: TEN
  type: MusicAlbum
  date published: 2025-09-19