Silversong String Quartet
type: MusicGroup
popularity: 6
followers: 1197
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x3d0adf206fbdf3ad4935839b308e2138becee563f64096b0aca677d7533ee906
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954058
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954058
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/4507c8e8-d801-4a79-9778-3f1a6b2804f3.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/4507c8e8-d801-4a79-9778-3f1a6b2804f3.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/4507c8e8-d801-4a79-9778-3f1a6b2804f3
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T06:34:31Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x3d0adf206fbdf3ad4935839b308e2138becee563f64096b0aca677d7533ee906","name":"Silversong String Quartet","registered_at":"2026-06-16T13:36:28Z","symbol":"NIM1068287","token_address":"0xbe68c6403c869a9d68d62386f39e8c63a31c3662","type":"artist","uuid":"4507c8e8-d801-4a79-9778-3f1a6b2804f3"}
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 0x3d0adf206fbdf3ad4935839b308e2138becee563f64096b0aca677d7533ee906. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4507c8e8-d801-4a79-9778-3f1a6b2804f3.json and https://artists.proofprofile.net/proofs/artist/4507c8e8-d801-4a79-9778-3f1a6b2804f3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:10:43Z
  text: {"copyright_id":"0x3d0adf206fbdf3ad4935839b308e2138becee563f64096b0aca677d7533ee906","name":"Silversong String Quartet","registered_at":"2026-06-16T13:36:28Z","symbol":"NIM1068287","token_address":"0xbe68c6403c869a9d68d62386f39e8c63a31c3662","type":"artist","uuid":"4507c8e8-d801-4a79-9778-3f1a6b2804f3"}
album: Silversong String Quartet
  type: MusicAlbum
  date published: 2019-04-10
album: Silversong String Quartet
  type: MusicAlbum
  date published: 2019-04-10
  track: Silversong no. 2
    type: MusicRecording
    duration: PT2M37S
    duration ms: 157386
    explicit: false
    by artist: Silversong String Quartet
    in album: Silversong String Quartet
      type: MusicAlbum
      date published: 2019-04-10
    isrc code: SE6EP1900102
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-03T00:52:37+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x0c48f9fe486d819be01e227429872f53dd2abdd29e3de43c391f7bc60f4c33bd
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956822
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956822
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SE6EP1900102
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T18:48:28Z
    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 0x0c48f9fe486d819be01e227429872f53dd2abdd29e3de43c391f7bc60f4c33bd. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/SE6EP1900102.
      date published: 2026-07-05T18:48:28Z
    audio: Silversong no. 2
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 128.733
      additional property: Musical Key
        type: PropertyValue
        value: 0
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.259
      additional property: Energy
        type: PropertyValue
        value: 0.265
      additional property: Speechiness
        type: PropertyValue
        value: 0.04
      additional property: Acousticness
        type: PropertyValue
        value: 0.966
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.94
      additional property: Liveness
        type: PropertyValue
        value: 0.132
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.091
      additional property: Loudness (dB)
        type: PropertyValue
        value: -12.417
      additional property: Key Name
        type: PropertyValue
        value: C
      additional property: Mode Name
        type: PropertyValue
        value: Major
  track: Silversong no. 3
    type: MusicRecording
    duration: PT3M52S
    duration ms: 232053
    explicit: false
    by artist: Silversong String Quartet
    in album: Silversong String Quartet
      type: MusicAlbum
      date published: 2019-04-10
    isrc code: SE6EP1900103
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-05T15:18:56+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x4bf80b1b84367e0c637ba5cc1350a72e8197e077e0708bda91f6a80984ee4635
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956826
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956826
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SE6EP1900103
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T19:27:56Z
    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 0x4bf80b1b84367e0c637ba5cc1350a72e8197e077e0708bda91f6a80984ee4635. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/SE6EP1900103.
      date published: 2026-07-05T19:27:56Z
    audio: Silversong no. 3
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 140.118
      additional property: Musical Key
        type: PropertyValue
        value: 2
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.3
      additional property: Energy
        type: PropertyValue
        value: 0.358
      additional property: Speechiness
        type: PropertyValue
        value: 0.033
      additional property: Acousticness
        type: PropertyValue
        value: 0.948
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.597
      additional property: Liveness
        type: PropertyValue
        value: 0.14
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.136
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name

Loudness (dB)
type: PropertyValue
value: -9.555

Key Name
type: PropertyValue
value: D

Mode Name
type: PropertyValue
value: Major