Askanäs Kammarkvartett
type: MusicGroup
genre: swedish ballads
popularity: 11
followers: 54
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x125b0492b53434ed1803c5d0d0f8adb3c7454b550b9575c10972cd22e2b3e858
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953638
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953638
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/385fb94d-4c14-4e6d-aafd-6673bd44f29d.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/385fb94d-4c14-4e6d-aafd-6673bd44f29d.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/385fb94d-4c14-4e6d-aafd-6673bd44f29d
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T13:10:39Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x125b0492b53434ed1803c5d0d0f8adb3c7454b550b9575c10972cd22e2b3e858","name":"Askanäs Kammarkvartett","registered_at":"2026-06-14T10:24:13Z","symbol":"NIM0423382","token_address":"0x452cf704fdb11f26d0db37d0827aa97377ca6a87","type":"artist","uuid":"385fb94d-4c14-4e6d-aafd-6673bd44f29d"}
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 0x125b0492b53434ed1803c5d0d0f8adb3c7454b550b9575c10972cd22e2b3e858. Chain 2 (Bitcoin): anchored in block 953638 (2026-06-14T13:10:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/385fb94d-4c14-4e6d-aafd-6673bd44f29d.json and https://artists.proofprofile.net/proofs/artist/385fb94d-4c14-4e6d-aafd-6673bd44f29d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T13:10:39Z
  text: {"copyright_id":"0x125b0492b53434ed1803c5d0d0f8adb3c7454b550b9575c10972cd22e2b3e858","name":"Askanäs Kammarkvartett","registered_at":"2026-06-14T10:24:13Z","symbol":"NIM0423382","token_address":"0x452cf704fdb11f26d0db37d0827aa97377ca6a87","type":"artist","uuid":"385fb94d-4c14-4e6d-aafd-6673bd44f29d"}
album: Vi gjorde det igen
  type: MusicAlbum
  date published: 2023-02-17
  track: Om natten är alla änkor grå
    type: MusicRecording
    duration: PT5M16S
    duration ms: 316717
    explicit: false
    by artist: Amanda Ginsburg
    by artist: Askanäs Kammarkvartett
    by artist: Filip Ekestubbe
    by artist: Ludvig Eriksson
    by artist: Ludwig Gustavsson
    in album: Vi gjorde det igen
      type: MusicAlbum
      date published: 2023-02-17
    popularity: 7
    isrc code: QM4TW2303571
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-06T04:54:48+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xff9e2edc378d769e599149c4f821206ce6cfbdc0909c51d16bd6d132eeda2e0d
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956889
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956889
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM4TW2303571
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-06T06:56:49Z
    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 0xff9e2edc378d769e599149c4f821206ce6cfbdc0909c51d16bd6d132eeda2e0d. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QM4TW2303571.
      date published: 2026-07-06T06:56:49Z
    audio: Om natten är alla änkor grå
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 142.6
      additional property: Musical Key
        type: PropertyValue
        value: 7
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 5
      additional property: Danceability
        type: PropertyValue
        value: 0.303
      additional property: Energy
        type: PropertyValue
        value: 0.051
      additional property: Speechiness
        type: PropertyValue
        value: 0.04
      additional property: Acousticness
        type: PropertyValue
        value: 0.943
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.044
      additional property: Liveness
        type: PropertyValue
        value: 0.091
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.124
      additional property: Loudness (dB)
        type: PropertyValue
        value: -21.415
      additional property: Key Name
        type: PropertyValue
        value: G
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Havsmelodi (feat. Filip Ekestubbe, Ludvig Eriksson and Ludwig Gustavsson)
  type: MusicAlbum
  date published: 2022-05-26
track: En midsommardröm
  type: MusicRecording
  duration: PT4M49S
  duration ms: 289560
  explicit: false
  by artist: Amanda Ginsburg
  by artist: Filip Ekestubbe
  by artist: Anders Fjeldsted
  by artist: Snorre Kirk
  by artist: Askanäs Kammarkvartett
  in album: En midsommardröm
    type: MusicAlbum
    date published: 2025-06-16
  isrc code: SEVOZ2500601
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-06-07T05:34:32+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xdb0c32458a251def44e243467d81104ef76e0a58abc978ad1273b721b144d73c
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 953515
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/953515
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEVOZ2500601
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-06-13T12:53:06Z
  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 0xdb0c32458a251def44e243467d81104ef76e0a58abc978ad1273b721b144d73c. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/SEVOZ2500601.
    date published: 2026-06-13T12:53:06Z
  audio: En midsommardröm
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 168.606
    additional property: Musical Key
      type: PropertyValue
      value: 7
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.307
    additional property: Energy
      type: PropertyValue
      value: 0.289
    additional property: Speechiness
      type: PropertyValue
      value: 0.033
    additional property: Acousticness
    additional property: Instrumentalness
    additional property: Liveness
    additional property: Valence (Positivity)
    additional property: Loudness (dB)
    additional property: Key Name
    additional property: Mode Name

Acousticness
type: PropertyValue
value: 0.944

Instrumentalness
type: PropertyValue
value: 0

Liveness
type: PropertyValue
value: 0.094

Valence (Positivity)
type: PropertyValue
value: 0.313

Loudness (dB)
type: PropertyValue
value: -11.274

Key Name
type: PropertyValue
value: G

Mode Name
type: PropertyValue
value: Minor