Memories of a Friend
type: MusicGroup
popularity: 4
followers: 1
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x90116c3364dddb0ccd68aa1c799ebd343d6deaac183d0aa09f1c16473ecfce27
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954717
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954717
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f3e26274-a20a-4b42-ab5f-aaa58718fe7f.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f3e26274-a20a-4b42-ab5f-aaa58718fe7f.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/f3e26274-a20a-4b42-ab5f-aaa58718fe7f
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T15:47:51Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x90116c3364dddb0ccd68aa1c799ebd343d6deaac183d0aa09f1c16473ecfce27","name":"Memories of a Friend","registered_at":"2026-06-21T14:15:56Z","symbol":"NIM1944305","token_address":"0x6bb405e30ade769a96aafb3f944d54e2aa0ed80d","type":"artist","uuid":"f3e26274-a20a-4b42-ab5f-aaa58718fe7f"}
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 0x90116c3364dddb0ccd68aa1c799ebd343d6deaac183d0aa09f1c16473ecfce27. Chain 2 (Bitcoin): anchored in block 954717 (2026-06-21T15:47:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f3e26274-a20a-4b42-ab5f-aaa58718fe7f.json and https://artists.proofprofile.net/proofs/artist/f3e26274-a20a-4b42-ab5f-aaa58718fe7f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T15:47:51Z
  text: {"copyright_id":"0x90116c3364dddb0ccd68aa1c799ebd343d6deaac183d0aa09f1c16473ecfce27","name":"Memories of a Friend","registered_at":"2026-06-21T14:15:56Z","symbol":"NIM1944305","token_address":"0x6bb405e30ade769a96aafb3f944d54e2aa0ed80d","type":"artist","uuid":"f3e26274-a20a-4b42-ab5f-aaa58718fe7f"}
album: Memories of a Friend
  type: MusicAlbum
  date published: 2025-07-07
  track: Memories of a Friend
    type: MusicRecording
    duration: PT4M4S
    duration ms: 244976
    explicit: false
    by artist: Memories of a Friend
    in album: Memories of a Friend
      type: MusicAlbum
      date published: 2025-07-07
    isrc code: QZTBF2519289
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-03T13:12:57+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x58cdcd5241ec88980ddc166641d8d92aa31c903e7dbcaafa557b496d7ef43083
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956551
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956551
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTBF2519289
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-03T21:18:05Z
    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 0x58cdcd5241ec88980ddc166641d8d92aa31c903e7dbcaafa557b496d7ef43083. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZTBF2519289.
      date published: 2026-07-03T21:18:05Z
    audio: Memories of a Friend
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 86.061
      additional property: Musical Key
        type: PropertyValue
        value: 5
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.606
      additional property: Energy
        type: PropertyValue
        value: 0.691
      additional property: Speechiness
        type: PropertyValue
        value: 0.03
      additional property: Acousticness
        type: PropertyValue
        value: 0.144
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.11
      additional property: Liveness
        type: PropertyValue
        value: 0.213
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.95
      additional property: Loudness (dB)
        type: PropertyValue
        value: -8.799
      additional property: Key Name
        type: PropertyValue
        value: F
      additional property: Mode Name
        type: PropertyValue
        value: Minor