Last week
type: MusicGroup
popularity: 2
followers: 361
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x738fc4b76be2bca0ff194b6d1f6bf06ef937fc9821b4e3837531f47a27643c1a
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/f3ad2b7f-290a-4fb1-8d8b-e4997055aac4.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f3ad2b7f-290a-4fb1-8d8b-e4997055aac4.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/f3ad2b7f-290a-4fb1-8d8b-e4997055aac4
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T15:47:51Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x738fc4b76be2bca0ff194b6d1f6bf06ef937fc9821b4e3837531f47a27643c1a","name":"Last week","registered_at":"2026-06-21T14:02:26Z","symbol":"NIM1941089","token_address":"0x8283d500282a5112b14f03214d4a5adca8a971c6","type":"artist","uuid":"f3ad2b7f-290a-4fb1-8d8b-e4997055aac4"}
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 0x738fc4b76be2bca0ff194b6d1f6bf06ef937fc9821b4e3837531f47a27643c1a. 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/f3ad2b7f-290a-4fb1-8d8b-e4997055aac4.json and https://artists.proofprofile.net/proofs/artist/f3ad2b7f-290a-4fb1-8d8b-e4997055aac4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T15:47:51Z
  text: {"copyright_id":"0x738fc4b76be2bca0ff194b6d1f6bf06ef937fc9821b4e3837531f47a27643c1a","name":"Last week","registered_at":"2026-06-21T14:02:26Z","symbol":"NIM1941089","token_address":"0x8283d500282a5112b14f03214d4a5adca8a971c6","type":"artist","uuid":"f3ad2b7f-290a-4fb1-8d8b-e4997055aac4"}
album: Watercolor
  type: MusicAlbum
  date published: 2022-08-19
album: Canvas
  type: MusicAlbum
  date published: 2022-08-19
album: Hommage
  type: MusicAlbum
  date published: 2022-11-01
album: Hommage
  type: MusicAlbum
  date published: 2022-11-01
album: Winter
  type: MusicAlbum
  date published: 2022-12-23
  track: Winter
    type: MusicRecording
    duration: PT3M16S
    duration ms: 196852
    explicit: false
    by artist: Last week
    in album: Winter
      type: MusicAlbum
      date published: 2022-12-23
    isrc code: KRNAR2233768
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-22T01:54:22+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xa12ef7124e307de270d6fa2097c252e089b21699e6f9f56ba3b8afe34f86763a
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 959088
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/959088
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRNAR2233768
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-22T04:56:43Z
    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 0xa12ef7124e307de270d6fa2097c252e089b21699e6f9f56ba3b8afe34f86763a. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T04:56:43Z), 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/KRNAR2233768.
      date published: 2026-07-22T04:56:43Z
    audio: Winter
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 169.264
      additional property: Musical Key
        type: PropertyValue
        value: 3
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.451
      additional property: Energy
        type: PropertyValue
        value: 0.449
      additional property: Speechiness
        type: PropertyValue
        value: 0.059
      additional property: Acousticness
        type: PropertyValue
        value: 0.744
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.091
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.18
      additional property: Loudness (dB)
        type: PropertyValue
        value: -8.999
      additional property: Key Name
        type: PropertyValue
        value: Eb
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Winter
  type: MusicAlbum
  date published: 2022-12-23
album: Love Season
  type: MusicAlbum
  date published: 2023-01-26
album: Grown Ups
  type: MusicAlbum
  date published: 2023-03-14
album: Homebodies
  type: MusicAlbum
  date published: 2024-01-29
album: Flowery Language
  type: MusicAlbum
  date published: 2024-06-09