Cassette Treasures
type: MusicGroup
genre: lo-fi
popularity: 36
followers: 444
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xcaf62cbc61a79fbe1fa6e5722259affea64b3acbbd0bfd64c7654388ca92dd8f
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953408
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953408
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/4abe9e8d-ed78-461c-bd3e-18096b95e7fe.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/4abe9e8d-ed78-461c-bd3e-18096b95e7fe.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/4abe9e8d-ed78-461c-bd3e-18096b95e7fe
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:28:13Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xcaf62cbc61a79fbe1fa6e5722259affea64b3acbbd0bfd64c7654388ca92dd8f","name":"Cassette Treasures","registered_at":"2026-06-11T19:18:13Z","symbol":"NIM0097727","token_address":"0x22bebd87ff87f29c92fce27b7ffefd56e2f05965","type":"artist","uuid":"4abe9e8d-ed78-461c-bd3e-18096b95e7fe"}
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 0xcaf62cbc61a79fbe1fa6e5722259affea64b3acbbd0bfd64c7654388ca92dd8f. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4abe9e8d-ed78-461c-bd3e-18096b95e7fe.json and https://artists.proofprofile.net/proofs/artist/4abe9e8d-ed78-461c-bd3e-18096b95e7fe.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:28:13Z
  text: {"copyright_id":"0xcaf62cbc61a79fbe1fa6e5722259affea64b3acbbd0bfd64c7654388ca92dd8f","name":"Cassette Treasures","registered_at":"2026-06-11T19:18:13Z","symbol":"NIM0097727","token_address":"0x22bebd87ff87f29c92fce27b7ffefd56e2f05965","type":"artist","uuid":"4abe9e8d-ed78-461c-bd3e-18096b95e7fe"}
album: Anywhere With You
  type: MusicAlbum
  date published: 2021-01-20
  track: Anywhere With You
    type: MusicRecording
    duration: PT2M21S
    duration ms: 141818
    explicit: false
    by artist: Cassette Treasures
    in album: Anywhere With You
      type: MusicAlbum
      date published: 2021-01-20
    genre: lo-fi
    isrc code: SE5IB2100050
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-16T17:07:18+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x1a24788c462073236f74082987891b27e966ebc56c41e2530045f64f5ba247f8
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958316
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958316
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SE5IB2100050
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-16T19:42:29Z
    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 0x1a24788c462073236f74082987891b27e966ebc56c41e2530045f64f5ba247f8. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/SE5IB2100050.
      date published: 2026-07-16T19:42:29Z
    audio: Anywhere With You
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 131.938
      additional property: Musical Key
        type: PropertyValue
        value: 8
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.669
      additional property: Energy
        type: PropertyValue
        value: 0.234
      additional property: Speechiness
        type: PropertyValue
        value: 0.04
      additional property: Acousticness
        type: PropertyValue
        value: 0.754
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.9
      additional property: Liveness
        type: PropertyValue
        value: 0.095
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.255
      additional property: Loudness (dB)
        type: PropertyValue
        value: -11.924
      additional property: Key Name
        type: PropertyValue
        value: Ab
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Leisurely
  type: MusicAlbum
  date published: 2022-05-08
album: Soft As Snow
  type: MusicAlbum
  date published: 2023-01-05
album: Pillowy
  type: MusicAlbum
  date published: 2023-04-23
album: Spoonful
  type: MusicAlbum
  date published: 2023-06-18
album: Percolator
  type: MusicAlbum
  date published: 2023-12-15
album: Pillowy
  type: MusicAlbum
  date published: 2024-09-27
album: Slower Pace
  type: MusicAlbum
  date published: 2025-08-08
track: Soft As Snow
  type: MusicRecording
  duration: PT1M58S
  duration ms: 118027
  explicit: false
  by artist: Cassette Treasures
  in album: Calm Beats
    type: MusicAlbum
    date published: 2024-08-21
  isrc code: SE5IB2213160
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-30T08:19:32+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xc9db1c54a37a09e61567273be554d7e9f900f23bbfd5b7282460ac124afefea6
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 960229
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/960229
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SE5IB2213160
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-30T08:30:10Z
  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 0xc9db1c54a37a09e61567273be554d7e9f900f23bbfd5b7282460ac124afefea6. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/SE5IB2213160.
    date published: 2026-07-30T08:30:10Z
  audio: Soft As Snow
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 168.234
    additional property: Musical Key
      type: PropertyValue
      value: 9
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
    additional property: Energy
    additional property: Speechiness
    additional property: Acousticness
    additional property: Instrumentalness
    additional property: Liveness
    additional property: Valence (Positivity)
    additional property: Loudness (dB)
    additional property: Key Name
    additional property: Mode Name

Danceability
type: PropertyValue
value: 0.286

Energy
type: PropertyValue
value: 0.042

Speechiness
type: PropertyValue
value: 0.039

Acousticness
type: PropertyValue
value: 0.95

Instrumentalness
type: PropertyValue
value: 0.933

Liveness
type: PropertyValue
value: 0.117

Valence (Positivity)
type: PropertyValue
value: 0.077

Loudness (dB)
type: PropertyValue
value: -18.03

Key Name
type: PropertyValue
value: A

Mode Name
type: PropertyValue
value: Minor