Daniel Estrem
type: MusicGroup
genre: chamber music
popularity: 16
followers: 1816
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x9683981da3e8eb56920992c9813cb25e2932cbe4b0268b3af1db70d419bb7425
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953657
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953657
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/51cefbf3-fa22-440f-a59f-4f5ef45bef2a.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/51cefbf3-fa22-440f-a59f-4f5ef45bef2a.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/51cefbf3-fa22-440f-a59f-4f5ef45bef2a
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T16:43:25Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x9683981da3e8eb56920992c9813cb25e2932cbe4b0268b3af1db70d419bb7425","name":"Daniel Estrem","registered_at":"2026-06-14T13:00:05Z","symbol":"NIM0460562","token_address":"0x5d0f457ec126b38316d26ab17a376b0c68717066","type":"artist","uuid":"51cefbf3-fa22-440f-a59f-4f5ef45bef2a"}
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 0x9683981da3e8eb56920992c9813cb25e2932cbe4b0268b3af1db70d419bb7425. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/51cefbf3-fa22-440f-a59f-4f5ef45bef2a.json and https://artists.proofprofile.net/proofs/artist/51cefbf3-fa22-440f-a59f-4f5ef45bef2a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T16:43:25Z
  text: {"copyright_id":"0x9683981da3e8eb56920992c9813cb25e2932cbe4b0268b3af1db70d419bb7425","name":"Daniel Estrem","registered_at":"2026-06-14T13:00:05Z","symbol":"NIM0460562","token_address":"0x5d0f457ec126b38316d26ab17a376b0c68717066","type":"artist","uuid":"51cefbf3-fa22-440f-a59f-4f5ef45bef2a"}
album: JS Bach on 8 string guitar, vol 2
  type: MusicAlbum
  date published: 2010-02-26
album: Colors of Spain
  type: MusicAlbum
  date published: 2010-03-12
album: Reverie
  type: MusicAlbum
  date published: 2010-06-05
album: Ravel on Guitar and Ukulele
  type: MusicAlbum
  date published: 2010-11-20
album: Scarlatti on Guitar and Ukulele
  type: MusicAlbum
  date published: 2011-05-03
album: Collage
  type: MusicAlbum
  date published: 2011-09-07
album: Bach Cello Suites on 8 String Guitar volume 2
  type: MusicAlbum
  date published: 2011-10-14
album: Colors of Spain Volume 2
  type: MusicAlbum
  date published: 2012-01-30
album: The Four Seasons - Vivaldi on Guitar and Ukulele
  type: MusicAlbum
  date published: 2012-03-18
album: Baroque Concertos on 8 String Guitar
  type: MusicAlbum
  date published: 2012-07-04
  track: Concerto Op3 no2 RV578 Allegro (A Vivaldi)
    type: MusicRecording
    duration: PT2M59S
    duration ms: 179240
    explicit: false
    by artist: Daniel Estrem
    in album: Baroque Concertos on 8 String Guitar
      type: MusicAlbum
      date published: 2012-07-04
    genre: chamber music
    isrc code: USANA1211908
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-05T20:03:39+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x4bd8edd0502ec934e0080ed67c8db02d5ae82c3f83aa024f66cf359c829ce216
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956857
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956857
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USANA1211908
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-06T01:26:17Z
    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 0x4bd8edd0502ec934e0080ed67c8db02d5ae82c3f83aa024f66cf359c829ce216. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USANA1211908.
      date published: 2026-07-06T01:26:17Z
    audio: Concerto Op3 no2 RV578 Allegro (A Vivaldi)
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 98.306
      additional property: Musical Key
        type: PropertyValue
        value: 7
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.478
      additional property: Energy
        type: PropertyValue
        value: 0.416
      additional property: Speechiness
        type: PropertyValue
        value: 0.046
      additional property: Acousticness
        type: PropertyValue
        value: 0.992
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.962
      additional property: Liveness
        type: PropertyValue
        value: 0.116
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.493
      additional property: Loudness (dB)
        type: PropertyValue
        value: -16.503
      additional property: Key Name
        type: PropertyValue
        value: G
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Vivaldi Concertos on 8-string guitar
  type: MusicAlbum
  date published: 2012-10-11
album: Classical Ukulele
  type: MusicAlbum
  date published: 2013-04-28
album: Classical Ukulele, Vol. 2
  type: MusicAlbum
  date published: 2013-07-07
album: JS Bach on Solo Mandola
  type: MusicAlbum
  date published: 2013-08-24
album: Js Bach on Solo Ukulele
  type: MusicAlbum
  date published: 2013-10-16
album: J. S. Bach on Solo Ukulele, Vol. 2
  type: MusicAlbum
  date published: 2013-12-14
album: JS Bach on Solo Mandola, Vol. 2
  type: MusicAlbum
  date published: 2014-01-09
album: The Classical Period on Ukulele and Guitar
  type: MusicAlbum
  date published: 2014-11-15
album: Music of Fernando Sor
  type: MusicAlbum
  date published: 2017-12-14