SPARROW
type: MusicGroup
popularity: 8
followers: 1660
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x97d6ca38630cbce45e25b02ca123d9abcc2be1a484530da50752984d55e9937d
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954689
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954689
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e3684513-2356-4de7-87df-fd731c70f070.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e3684513-2356-4de7-87df-fd731c70f070.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/e3684513-2356-4de7-87df-fd731c70f070
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T10:35:31Z
additional property: OTSCanonicalRecord
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 0x97d6ca38630cbce45e25b02ca123d9abcc2be1a484530da50752984d55e9937d. Chain 2 (Bitcoin): anchored in block 954689 (2026-06-21T10:35:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e3684513-2356-4de7-87df-fd731c70f070.json and https://artists.proofprofile.net/proofs/artist/e3684513-2356-4de7-87df-fd731c70f070.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T10:35:31Z
album: Ant Mill
  type: MusicAlbum
  date published: 2023-07-20
album: Ant Mill
  type: MusicAlbum
  date published: 2023-07-20
album: Baggage Claim
  type: MusicAlbum
  date published: 2023-08-31
album: Baggage Claim
  type: MusicAlbum
  date published: 2023-08-31
album: Petrichor
  type: MusicAlbum
  date published: 2023-09-25
album: Petrichor
  type: MusicAlbum
  date published: 2023-09-25
album: We're All Bored
  type: MusicAlbum
  date published: 2023-10-31
album: We're All Bored
  type: MusicAlbum
  date published: 2023-10-31
album: Fake Severed Arm
  type: MusicAlbum
  date published: 2024-03-15
album: Fake Severed Arm
  type: MusicAlbum
  date published: 2024-03-15
  track: Fake Severed Arm
    type: MusicRecording
    duration: PT5M4S
    duration ms: 304454
    explicit: true
    by artist: SPARROW
    in album: Fake Severed Arm
      type: MusicAlbum
      date published: 2024-03-15
    isrc code: USCGJ2446496
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-06T00:02:24+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xfc55ad246732b4102ced10985fa3996ad698518a2388f13c34f05c9575a1e570
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956857
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956857
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USCGJ2446496
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-06T01:26:17Z
    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 0xfc55ad246732b4102ced10985fa3996ad698518a2388f13c34f05c9575a1e570. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USCGJ2446496.
      date published: 2026-07-06T01:26:17Z
    audio: Fake Severed Arm
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 82.772
      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: 0.23
      additional property: Energy
        type: PropertyValue
        value: 0.26
      additional property: Speechiness
        type: PropertyValue
        value: 0.029
      additional property: Acousticness
        type: PropertyValue
        value: 0.336
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.327
      additional property: Liveness
        type: PropertyValue
        value: 0.147
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.142
      additional property: Loudness (dB)
        type: PropertyValue
        value: -13.29
      additional property: Key Name
        type: PropertyValue
        value: Ab
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Sleep Inertia
  type: MusicAlbum
  date published: 2024-09-20
  track: Sleep Inertia
    type: MusicRecording
    duration: PT3M14S
    duration ms: 194911
    explicit: false
    by artist: SPARROW
    in album: Sleep Inertia
      type: MusicAlbum
      date published: 2024-09-20
    isrc code: QM7282494260
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-19T23:51:46+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xdde983cd3f38cff16b0e5a4026fa4cde77079af9e635463fe60ded490781acda
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958798
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958798
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM7282494260
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-20T02:52:52Z
    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 0xdde983cd3f38cff16b0e5a4026fa4cde77079af9e635463fe60ded490781acda. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:52:52Z), 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/QM7282494260.
      date published: 2026-07-20T02:52:52Z
    audio: Sleep Inertia
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 165.045
      additional property: Musical Key
        type: PropertyValue
        value: 1
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
      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
album: White Ribs
album: Headless Observer

Time Signature
type: PropertyValue
value: 4

Danceability
type: PropertyValue
value: 0.353

Energy
type: PropertyValue
value: 0.565

Speechiness
type: PropertyValue
value: 0.032

Acousticness
type: PropertyValue
value: 0.006

Instrumentalness
type: PropertyValue
value: 0.228

Liveness
type: PropertyValue
value: 0.566

Valence (Positivity)
type: PropertyValue
value: 0.188

Loudness (dB)
type: PropertyValue
value: -10.605

Key Name
type: PropertyValue
value: C#

Mode Name
type: PropertyValue
value: Major

White Ribs
type: MusicAlbum
date published: 2025-05-16
track: White Ribs
  type: MusicRecording
  duration: PT6M35S
  duration ms: 395044
  explicit: false
  by artist: SPARROW
  in album: White Ribs
    type: MusicAlbum
    date published: 2025-05-16
  isrc code: QM6P42524163
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-17T18:55:51+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xdcd755c3f23e29a28a39d0296f7562e302afbb8fac220b51546c714342a0e18f
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958448
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958448
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM6P42524163
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-17T19:49:21Z
  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 0xdcd755c3f23e29a28a39d0296f7562e302afbb8fac220b51546c714342a0e18f. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QM6P42524163.
    date published: 2026-07-17T19:49:21Z
  audio: White Ribs
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 113.069
    additional property: Musical Key
      type: PropertyValue
      value: 3
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 3
    additional property: Danceability
      type: PropertyValue
      value: 0.42
    additional property: Energy
      type: PropertyValue
      value: 0.446
    additional property: Speechiness
      type: PropertyValue
      value: 0.034
    additional property: Acousticness
      type: PropertyValue
      value: 0.08
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.022
    additional property: Liveness
      type: PropertyValue
      value: 0.256
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.049
    additional property: Loudness (dB)
      type: PropertyValue
      value: -9.133
    additional property: Key Name
      type: PropertyValue
      value: Eb
    additional property: Mode Name
      type: PropertyValue
      value: Major

Headless Observer
type: MusicAlbum
date published: 2025-11-07