Puru
type: MusicGroup
genre: japanese indie
popularity: 2
followers: 79
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa2e95f5b0a5691c5eb2751de97ca6af0aae239f7096e7582a0f5a8ef4f463afd
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954066
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954066
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/70e8ead7-6a4e-49bd-8f1c-86ac3763716c.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/70e8ead7-6a4e-49bd-8f1c-86ac3763716c.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/70e8ead7-6a4e-49bd-8f1c-86ac3763716c
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
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 0xa2e95f5b0a5691c5eb2751de97ca6af0aae239f7096e7582a0f5a8ef4f463afd. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/70e8ead7-6a4e-49bd-8f1c-86ac3763716c.json and https://artists.proofprofile.net/proofs/artist/70e8ead7-6a4e-49bd-8f1c-86ac3763716c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
album: Electric
  type: MusicAlbum
  date published: 2019-02-13
album: Electric
  type: MusicAlbum
  date published: 2019-02-13
album: HYPER
  type: MusicAlbum
  date published: 2019-03-19
album: Life Flows
  type: MusicAlbum
  date published: 2019-05-10
album: Life Flows
  type: MusicAlbum
  date published: 2019-05-10
album: lockdown
  type: MusicAlbum
  date published: 2019-10-14
album: Starz
  type: MusicAlbum
  date published: 2020-01-31
album: Starz
  type: MusicAlbum
  date published: 2020-01-31
album: BOUJEE
  type: MusicAlbum
  date published: 2020-10-17
album: BOUJEE
  type: MusicAlbum
  date published: 2020-10-17
album: Dont Wanna Leave
  type: MusicAlbum
  date published: 2021-02-01
album: Phantom
  type: MusicAlbum
  date published: 2021-02-06
album: Paranoia Flows 2
  type: MusicAlbum
  date published: 2021-02-19
album: Heartache
  type: MusicAlbum
  date published: 2021-03-14
album: NXT
  type: MusicAlbum
  date published: 2023-05-19
album: BABY
  type: MusicAlbum
  date published: 2023-12-01
track: Mastiff

Mastiff
type: MusicRecording
duration: PT4M18S
duration ms: 258506
explicit: false
by artist: Puru
in album: 24/7 -works. for stream-
  type: MusicAlbum
  date published: 2021-08-23
isrc code: TCJPQ2126498
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T16:44:18+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x4abd60db1e038e9c4d0961c9f64d4e6cbeeb4eb105b09d23c89a55bc96ef99a0
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957118
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957118
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCJPQ2126498
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:20:19Z
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
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 957118
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-08T03:20:19+00:00
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4abd60db1e038e9c4d0961c9f64d4e6cbeeb4eb105b09d23c89a55bc96ef99a0. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/TCJPQ2126498.
  date published: 2026-07-08T03:20:19Z
audio: Mastiff
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 131.661
  additional property: Musical Key
    type: PropertyValue
    value: 6
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.581
  additional property: Energy
    type: PropertyValue
    value: 0.619
  additional property: Speechiness
    type: PropertyValue
    value: 0.054
  additional property: Acousticness
    type: PropertyValue
    value: 0.043
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.918
  additional property: Liveness
    type: PropertyValue
    value: 0.111
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.442
  additional property: Loudness (dB)
    type: PropertyValue
    value: -14.192
  additional property: Key Name
    type: PropertyValue
    value: F#
  additional property: Mode Name
    type: PropertyValue
    value: Major