Sad Violin Music
type: MusicGroup
popularity: 9
followers: 274
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x97ca4b4c1d8426c7e2eb6e7818446dd3f401fdeacca5ee158525a05e8240a216
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/9f9b0e3a-3103-4810-a6d2-fda6dcacb03c.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9f9b0e3a-3103-4810-a6d2-fda6dcacb03c.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/9f9b0e3a-3103-4810-a6d2-fda6dcacb03c
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T06:31:18Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x97ca4b4c1d8426c7e2eb6e7818446dd3f401fdeacca5ee158525a05e8240a216","name":"Sad Violin Music","registered_at":"2026-06-20T05:13:13Z","symbol":"NIM1522553","token_address":"0xf8ee99aa64e7a734d574f7a6d48bf454e8e89546","type":"artist","uuid":"9f9b0e3a-3103-4810-a6d2-fda6dcacb03c"}
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 0x97ca4b4c1d8426c7e2eb6e7818446dd3f401fdeacca5ee158525a05e8240a216. 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/9f9b0e3a-3103-4810-a6d2-fda6dcacb03c.json and https://artists.proofprofile.net/proofs/artist/9f9b0e3a-3103-4810-a6d2-fda6dcacb03c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T06:31:18Z
  text: {"copyright_id":"0x97ca4b4c1d8426c7e2eb6e7818446dd3f401fdeacca5ee158525a05e8240a216","name":"Sad Violin Music","registered_at":"2026-06-20T05:13:13Z","symbol":"NIM1522553","token_address":"0xf8ee99aa64e7a734d574f7a6d48bf454e8e89546","type":"artist","uuid":"9f9b0e3a-3103-4810-a6d2-fda6dcacb03c"}
album: Sad Violin - Crying Music Vol. 1
  type: MusicAlbum
  date published: 2021-12-02
  track: Sad Violin
    type: MusicRecording
    duration: PT2M57S
    duration ms: 177000
    explicit: false
    by artist: Sad Violin Music
    in album: Sad Violin - Crying Music Vol. 1
      type: MusicAlbum
      date published: 2021-12-02
    isrc code: PL44R2110137
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-12T21:56:19+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xab25bb7797c37f2f830ef804ef47b4c7ff5a5766edef51f11c06372a6f5493be
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 957763
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/957763
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PL44R2110137
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-12T22:01:25Z
    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 0xab25bb7797c37f2f830ef804ef47b4c7ff5a5766edef51f11c06372a6f5493be. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/PL44R2110137.
      date published: 2026-07-12T22:01:25Z
    audio: Sad Violin
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 86.568
      additional property: Musical Key
        type: PropertyValue
        value: 9
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 3
      additional property: Danceability
        type: PropertyValue
        value: 0.095
      additional property: Energy
        type: PropertyValue
        value: 0.109
      additional property: Speechiness
        type: PropertyValue
        value: 0.035
      additional property: Acousticness
        type: PropertyValue
        value: 0.991
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.072
      additional property: Liveness
        type: PropertyValue
        value: 0.071
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.566
      additional property: Loudness (dB)
        type: PropertyValue
        value: -13.05
      additional property: Key Name
        type: PropertyValue
        value: A
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Sad Violin - Crying Music Vol. 2
  type: MusicAlbum
  date published: 2021-12-09
album: Sad Violin - Crying Music Vol. 5
  type: MusicAlbum
  date published: 2021-12-30
album: Dark Shadows - Melancholy Mood
  type: MusicAlbum
  date published: 2022-01-27
album: Sad Violin Sounds for Sleeping
  type: MusicAlbum
  date published: 2022-02-03
album: Sad Violin Album - Instrumental Music 2022
  type: MusicAlbum
  date published: 2022-02-24
album: Just Cry, Sad Violin Collection
  type: MusicAlbum
  date published: 2022-03-10
album: Somber & Melancholy Music
  type: MusicAlbum
  date published: 2022-03-17