Philadelphia String Quartet
type: MusicGroup
description: The Philadelphia String Quartet was an American string quartet founded in Philadelphia, Pennsylvania, in 1959-60 by four members of the Philadelphia Orchestra. They later broke off from the orchestra
popularity: 6
followers: 199
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x0d6202f77a2c431ec0e03fac63001c557181d9a74f676dd73fcfcda2799b4ef3
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954346
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954346
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9784b96f-7b17-41a3-b499-b7284d754b17.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9784b96f-7b17-41a3-b499-b7284d754b17.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/9784b96f-7b17-41a3-b499-b7284d754b17
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:51:26Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x0d6202f77a2c431ec0e03fac63001c557181d9a74f676dd73fcfcda2799b4ef3","name":"Philadelphia String Quartet","registered_at":"2026-06-17T18:34:56Z","symbol":"NIM1482975","token_address":"0x1d4ffa43c61f8d6cab6d8b8d424d61b28fef99a7","type":"artist","uuid":"9784b96f-7b17-41a3-b499-b7284d754b17"}
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 0x0d6202f77a2c431ec0e03fac63001c557181d9a74f676dd73fcfcda2799b4ef3. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9784b96f-7b17-41a3-b499-b7284d754b17.json and https://artists.proofprofile.net/proofs/artist/9784b96f-7b17-41a3-b499-b7284d754b17.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:51:26Z
  text: {"copyright_id":"0x0d6202f77a2c431ec0e03fac63001c557181d9a74f676dd73fcfcda2799b4ef3","name":"Philadelphia String Quartet","registered_at":"2026-06-17T18:34:56Z","symbol":"NIM1482975","token_address":"0x1d4ffa43c61f8d6cab6d8b8d424d61b28fef99a7","type":"artist","uuid":"9784b96f-7b17-41a3-b499-b7284d754b17"}
album: Evolution
  type: MusicAlbum
  date published: 2011-06-14
album: Let It Sing
  type: MusicAlbum
  date published: 2012-11-28
album: Psq Wedding Classics
  type: MusicAlbum
  date published: 2017-02-01
  track: Lakmé: Flower Duet
    type: MusicRecording
    duration: PT3M49S
    duration ms: 229821
    explicit: false
    by artist: Philadelphia String Quartet
    in album: Psq Wedding Classics
      type: MusicAlbum
      date published: 2017-02-01
    isrc code: USCGH1763810
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-13T15:25:38+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x670c8cc617303c8579162685c1405817c53169477d6802b20ef4eabdb8515202
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 957872
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/957872
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USCGH1763810
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-13T15:39:45Z
    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 0x670c8cc617303c8579162685c1405817c53169477d6802b20ef4eabdb8515202. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/USCGH1763810.
      date published: 2026-07-13T15:39:45Z
    audio: Lakmé: Flower Duet
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 111.61
      additional property: Musical Key
        type: PropertyValue
        value: 11
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 3
      additional property: Danceability
        type: PropertyValue
        value: 0.349
      additional property: Energy
        type: PropertyValue
        value: 0.258
      additional property: Speechiness
        type: PropertyValue
        value: 0.037
      additional property: Acousticness
        type: PropertyValue
        value: 0.789
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.178
      additional property: Liveness
        type: PropertyValue
        value: 0.341
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.193
      additional property: Loudness (dB)
        type: PropertyValue
        value: -10.354
      additional property: Key Name
        type: PropertyValue
        value: B
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: The Prayer
  type: MusicAlbum
  date published: 2017-02-07
album: Finesse
  type: MusicAlbum
  date published: 2018-06-12
album: Sucker
  type: MusicAlbum
  date published: 2020-11-30
album: Lighthearted
  type: MusicAlbum
  date published: 2020-11-30
album: New Rules
  type: MusicAlbum
  date published: 2020-11-30
album: Finesse
  type: MusicAlbum
  date published: 2020-11-30
album: Oh My God
  type: MusicAlbum
  date published: 2023-09-22
album: Flowers
  type: MusicAlbum
  date published: 2023-10-02
album: Basement Sessions
  type: MusicAlbum
  date published: 2023-10-13
album: Hallelujah (Arr. for String Quartet)
  type: MusicAlbum
  date published: 2024-04-15
album: Lucky (Arr. for String Quartet)
  type: MusicAlbum
  date published: 2024-04-30
album: Enchanted
  type: MusicAlbum
  date published: 2024-08-14
album: Stairway to Heaven (Acoustic Version)
  type: MusicAlbum
  date published: 2024-11-16
album: Back to You (Bridgerton Style)
  type: MusicAlbum
  date published: 2024-11-16
album: Wolves
  type: MusicAlbum
  date published: 2024-12-01