Leftøver
type: MusicGroup
popularity: 7
followers: 562
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xecbd0daa9bed746661704d7007d9061c16c08b0f8adf62b49720f3a383199c6b
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954065
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954065
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/4d6995dd-b674-48d7-97b5-9ae2b8da8d8d.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/4d6995dd-b674-48d7-97b5-9ae2b8da8d8d.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/4d6995dd-b674-48d7-97b5-9ae2b8da8d8d
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:10:43Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xecbd0daa9bed746661704d7007d9061c16c08b0f8adf62b49720f3a383199c6b","name":"Leftøver","registered_at":"2026-06-16T16:32:17Z","symbol":"NIM1110243","token_address":"0x187461e4a40c00c48d2bb01b466120552ca87629","type":"artist","uuid":"4d6995dd-b674-48d7-97b5-9ae2b8da8d8d"}
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 0xecbd0daa9bed746661704d7007d9061c16c08b0f8adf62b49720f3a383199c6b. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4d6995dd-b674-48d7-97b5-9ae2b8da8d8d.json and https://artists.proofprofile.net/proofs/artist/4d6995dd-b674-48d7-97b5-9ae2b8da8d8d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:10:43Z
  text: {"copyright_id":"0xecbd0daa9bed746661704d7007d9061c16c08b0f8adf62b49720f3a383199c6b","name":"Leftøver","registered_at":"2026-06-16T16:32:17Z","symbol":"NIM1110243","token_address":"0x187461e4a40c00c48d2bb01b466120552ca87629","type":"artist","uuid":"4d6995dd-b674-48d7-97b5-9ae2b8da8d8d"}
album: Skins
  type: MusicAlbum
  date published: 2021-02-17
album: Cry/Serotonin
  type: MusicAlbum
  date published: 2021-04-09
album: Can we say goodbye?
  type: MusicAlbum
  date published: 2021-08-12
album: Hate me
  type: MusicAlbum
  date published: 2021-08-23
album: Silence
  type: MusicAlbum
  date published: 2021-10-29
album: Seasons
  type: MusicAlbum
  date published: 2022-01-21
  track: Sick
    type: MusicRecording
    duration: PT2M56S
    duration ms: 176000
    explicit: false
    by artist: Leftøver
    in album: Seasons
      type: MusicAlbum
      date published: 2022-01-21
    isrc code: QZFYX2276944
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-20T12:13:39+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x6bee4912c2387749c46c8337c3854000d215c0c7d56c40e508c03269a0e37b13
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958878
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958878
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFYX2276944
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-20T15:15:22Z
    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 0x6bee4912c2387749c46c8337c3854000d215c0c7d56c40e508c03269a0e37b13. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T15:15:22Z), 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/QZFYX2276944.
      date published: 2026-07-20T15:15:22Z
    audio: Sick
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 120.02
      additional property: Musical Key
        type: PropertyValue
        value: 8
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.573
      additional property: Energy
        type: PropertyValue
        value: 0.594
      additional property: Speechiness
        type: PropertyValue
        value: 0.034
      additional property: Acousticness
        type: PropertyValue
        value: 0.055
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.122
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.164
      additional property: Loudness (dB)
        type: PropertyValue
        value: -7.238
      additional property: Key Name
        type: PropertyValue
        value: Ab
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Love Me
  type: MusicAlbum
  date published: 2022-04-22
album: The look in your eyes
  type: MusicAlbum
  date published: 2022-05-02
album: Brightside
  type: MusicAlbum
  date published: 2022-08-19
album: Ruin
  type: MusicAlbum
  date published: 2022-12-23
album: Whatever there is left of me
  type: MusicAlbum
  date published: 2023-02-24
album: III
  type: MusicAlbum
  date published: 2023-07-21
album: Mood Swings
  type: MusicAlbum
  date published: 2023-09-22