Friend of a Friend
type: MusicGroup
genre: hard house
description: In sociology, a friend of a friend is a human contact that exists because of a mutual friend. Person C is a friend of a friend of person A when there is a person B that is a friend of both A and C.
popularity: 6
followers: 149
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x08c396c00ae5860d7e5bd86f2c1bf9738be9bdfca2b17b19cda0fa0188516cdd
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953997
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953997
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/304d1d81-14b8-41b1-9176-10895628e566.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/304d1d81-14b8-41b1-9176-10895628e566.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/304d1d81-14b8-41b1-9176-10895628e566
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T20:07:57Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x08c396c00ae5860d7e5bd86f2c1bf9738be9bdfca2b17b19cda0fa0188516cdd","name":"Friend of a Friend","registered_at":"2026-06-16T06:41:56Z","symbol":"NIM0969379","token_address":"0xc7f49be0569e1daa95cbfdc33a00a482a5cd1cd2","type":"artist","uuid":"304d1d81-14b8-41b1-9176-10895628e566"}
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 0x08c396c00ae5860d7e5bd86f2c1bf9738be9bdfca2b17b19cda0fa0188516cdd. Chain 2 (Bitcoin): anchored in block 953997 (2026-06-16T20:07:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/304d1d81-14b8-41b1-9176-10895628e566.json and https://artists.proofprofile.net/proofs/artist/304d1d81-14b8-41b1-9176-10895628e566.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T20:07:57Z
  text: {"copyright_id":"0x08c396c00ae5860d7e5bd86f2c1bf9738be9bdfca2b17b19cda0fa0188516cdd","name":"Friend of a Friend","registered_at":"2026-06-16T06:41:56Z","symbol":"NIM0969379","token_address":"0xc7f49be0569e1daa95cbfdc33a00a482a5cd1cd2","type":"artist","uuid":"304d1d81-14b8-41b1-9176-10895628e566"}
album: Come On
  type: MusicAlbum
  date published: 2023-01-05
album: Electronica Romantica
  type: MusicAlbum
  date published: 2023-01-13
album: Gang
  type: MusicAlbum
  date published: 2023-04-05
album: Wait 4 U
  type: MusicAlbum
  date published: 2024-07-19
  track: Wait 4 U
    type: MusicRecording
    duration: PT5M5S
    duration ms: 305003
    explicit: false
    by artist: Friend of a Friend
    in album: Wait 4 U
      type: MusicAlbum
      date published: 2024-07-19
    genre: hard house
    isrc code: QZNWX2434350
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-04T10:23:35+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x8477eed1e67e485ef3fcbdbfd2806ce4249afc832338157c86f4aa910411bc8a
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956637
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956637
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWX2434350
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-04T10:56:23Z
    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 0x8477eed1e67e485ef3fcbdbfd2806ce4249afc832338157c86f4aa910411bc8a. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/QZNWX2434350.
      date published: 2026-07-04T10:56:23Z
    audio: Wait 4 U
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 150.001
      additional property: Musical Key
        type: PropertyValue
        value: 9
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.652
      additional property: Energy
        type: PropertyValue
        value: 0.999
      additional property: Speechiness
        type: PropertyValue
        value: 0.063
      additional property: Acousticness
        type: PropertyValue
        value: 0.005
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.893
      additional property: Liveness
        type: PropertyValue
        value: 0.249
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.874
      additional property: Loudness (dB)
        type: PropertyValue
        value: -6.297
      additional property: Key Name
        type: PropertyValue
        value: A
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Want U
  type: MusicAlbum
  date published: 2024-09-09
album: Free Spirit
  type: MusicAlbum
  date published: 2025-10-03
album: Growing Pains / Free Spirit
  type: MusicAlbum
  date published: 2025-10-23
album: Through The Veil
  type: MusicAlbum
  date published: 2025-11-07