Sagar Da
type: MusicGroup
popularity: 3
followers: 58
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x8f5dec9ba7d2da5f7b34e536500c7eb970db8092095ad0bb58a8c16ac900ebae
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954513
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954513
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9e156805-9f12-4ccd-a4c9-0831894b9196.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9e156805-9f12-4ccd-a4c9-0831894b9196.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/9e156805-9f12-4ccd-a4c9-0831894b9196
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T06:31:18Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x8f5dec9ba7d2da5f7b34e536500c7eb970db8092095ad0bb58a8c16ac900ebae","name":"Sagar Da","registered_at":"2026-06-20T04:21:46Z","symbol":"NIM1514159","token_address":"0x1f56d5e615fdcc3a2abc3d924c13bd59411098a1","type":"artist","uuid":"9e156805-9f12-4ccd-a4c9-0831894b9196"}
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 0x8f5dec9ba7d2da5f7b34e536500c7eb970db8092095ad0bb58a8c16ac900ebae. Chain 2 (Bitcoin): anchored in block 954513 (2026-06-20T06:31:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9e156805-9f12-4ccd-a4c9-0831894b9196.json and https://artists.proofprofile.net/proofs/artist/9e156805-9f12-4ccd-a4c9-0831894b9196.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T06:31:18Z
  text: {"copyright_id":"0x8f5dec9ba7d2da5f7b34e536500c7eb970db8092095ad0bb58a8c16ac900ebae","name":"Sagar Da","registered_at":"2026-06-20T04:21:46Z","symbol":"NIM1514159","token_address":"0x1f56d5e615fdcc3a2abc3d924c13bd59411098a1","type":"artist","uuid":"9e156805-9f12-4ccd-a4c9-0831894b9196"}
album: Khachar Bhitor Ochin Pakhi
  type: MusicAlbum
  date published: 2022-06-25
  track: Khachar Bhitor Ochin Pakhi
    type: MusicRecording
    duration: PT7M14S
    duration ms: 434979
    explicit: false
    by artist: Sagar Da
    in album: Khachar Bhitor Ochin Pakhi
      type: MusicAlbum
      date published: 2022-06-25
    isrc code: QZLQR2149550
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-18T22:49:24+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xfa442dc5856801504c61ea4d3323ff068ba05616a1e7a88002b27f2d1896ec6f
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958621
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958621
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZLQR2149550
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-18T22:59:44Z
    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 0xfa442dc5856801504c61ea4d3323ff068ba05616a1e7a88002b27f2d1896ec6f. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/QZLQR2149550.
      date published: 2026-07-18T22:59:44Z
    audio: Khachar Bhitor Ochin Pakhi
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 159.977
      additional property: Musical Key
        type: PropertyValue
        value: 6
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 3
      additional property: Danceability
        type: PropertyValue
        value: 0.514
      additional property: Energy
        type: PropertyValue
        value: 0.582
      additional property: Speechiness
        type: PropertyValue
        value: 0.043
      additional property: Acousticness
        type: PropertyValue
        value: 0.361
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.243
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.397
      additional property: Loudness (dB)
        type: PropertyValue
        value: -7.934
      additional property: Key Name
        type: PropertyValue
        value: F#
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Bokul Ful
  type: MusicAlbum
  date published: 2022-06-26
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  type: MusicAlbum
  date published: 2022-06-26
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  type: MusicAlbum
  date published: 2022-06-26
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  type: MusicAlbum
  date published: 2024-07-15
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  type: MusicAlbum
  date published: 2024-07-15
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  type: MusicAlbum
  date published: 2024-07-16
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  type: MusicAlbum
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  type: MusicAlbum
  date published: 2025-05-02
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  type: MusicAlbum
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  type: MusicAlbum
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  type: MusicAlbum
  date published: 2025-06-25