Ketil Christensen
type: MusicGroup
popularity: 3
followers: 236
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x0ce852faab5e8ee6950de0906aba10f34565300a95f35eddb635ad2956329d89
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953909
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953909
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/18625514-d544-4ffd-bb1b-6f273c7d82c0.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/18625514-d544-4ffd-bb1b-6f273c7d82c0.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/18625514-d544-4ffd-bb1b-6f273c7d82c0
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T07:53:13Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x0ce852faab5e8ee6950de0906aba10f34565300a95f35eddb635ad2956329d89","name":"Ketil Christensen","registered_at":"2026-06-15T21:55:44Z","symbol":"NIM0843707","token_address":"0x5ff3eaba7fef8965ded79bb777d3559802cbe28b","type":"artist","uuid":"18625514-d544-4ffd-bb1b-6f273c7d82c0"}
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 0x0ce852faab5e8ee6950de0906aba10f34565300a95f35eddb635ad2956329d89. Chain 2 (Bitcoin): anchored in block 953909 (2026-06-16T07:53:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/18625514-d544-4ffd-bb1b-6f273c7d82c0.json and https://artists.proofprofile.net/proofs/artist/18625514-d544-4ffd-bb1b-6f273c7d82c0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T07:53:13Z
  text: {"copyright_id":"0x0ce852faab5e8ee6950de0906aba10f34565300a95f35eddb635ad2956329d89","name":"Ketil Christensen","registered_at":"2026-06-15T21:55:44Z","symbol":"NIM0843707","token_address":"0x5ff3eaba7fef8965ded79bb777d3559802cbe28b","type":"artist","uuid":"18625514-d544-4ffd-bb1b-6f273c7d82c0"}
album: Royal Danish Concertos for Brass
  type: MusicAlbum
  date published: 2022-03-11
album: Danish Music for Brass 12
  type: MusicAlbum
  date published: 2019-10-10
album: Danish Music for Brass 14
  type: MusicAlbum
  date published: 2020-03-13
  track: Old Swedish Folktune From Dalecarlia - Arr. for 2 trumpets and Orchestra
    type: MusicRecording
    duration: PT3M46S
    duration ms: 226046
    explicit: false
    by artist: Oskar Fredrik Lindberg
    by artist: Preben Nørgaard Christensen
    by artist: Lars Ole Shmidt
    by artist: Ketil Christensen
    by artist: Pavel Vitek
    by artist: The Moravian Silesian Chamber Orchestra
    in album: Danish Music for Brass 14
      type: MusicAlbum
      date published: 2020-03-13
    isrc code: QM7281972594
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-07T07:27:08+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x1611c67538e143f40599ed4de9a9563ecfb1d5e4e03ba5c5734ad32a1c6e1285
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 957118
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/957118
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM7281972594
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-08T03:20:19Z
    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 0x1611c67538e143f40599ed4de9a9563ecfb1d5e4e03ba5c5734ad32a1c6e1285. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QM7281972594.
      date published: 2026-07-08T03:20:19Z
    audio: Old Swedish Folktune From Dalecarlia - Arr. for 2 trumpets and Orchestra
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 88.867
      additional property: Musical Key
        type: PropertyValue
        value: 11
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 5
      additional property: Danceability
        type: PropertyValue
        value: 0.102
      additional property: Energy
        type: PropertyValue
        value: 0.245
      additional property: Speechiness
        type: PropertyValue
        value: 0.041
      additional property: Acousticness
        type: PropertyValue
        value: 0.941
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.924
      additional property: Liveness
        type: PropertyValue
        value: 0.15
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.04
      additional property: Loudness (dB)
        type: PropertyValue
        value: -16.819
      additional property: Key Name
        type: PropertyValue
        value: B
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Danish Music for Brass 15
  type: MusicAlbum
  date published: 2020-08-07
album: Danish Music for Brass 13
  type: MusicAlbum
  date published: 2020-03-13
  track: Czárdás - Arr. for Trumpet and Piano
    type: MusicRecording
    duration: PT4M21S
    duration ms: 261785
    explicit: false
    by artist: Vittorio Monti
    by artist: Ketil Christensen
    by artist: Jørgen Andersen
    in album: Danish Music for Brass 13
      type: MusicAlbum
      date published: 2020-03-13
    isrc code: QM7281972271
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-07T12:02:26+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xd38118eec66405c1f1977d926becf6e2bfc10702a29c5b4fc1ef98bb41499a6d
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 957118
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/957118
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM7281972271
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-08T03:20:19Z
    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 0xd38118eec66405c1f1977d926becf6e2bfc10702a29c5b4fc1ef98bb41499a6d. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QM7281972271.
      date published: 2026-07-08T03:20:19Z
    audio: Czárdás - Arr. for Trumpet and Piano
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 146.187
      additional property: Musical Key
        type: PropertyValue
        value: 2
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 5
      additional property: Danceability
        type: PropertyValue
        value: 0.354
      additional property: Energy
      additional property: Speechiness
      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
album: Danish Music for Brass 20
album: Danish Music for Brass 17
album: Danish Music for Brass 11
album: Smile
album: Danish Music for Brass 5
album: Danish Music For Brass 21: Concerto for trumpet and orchestra in Eb major
album: Danish Music For Brass 21: Concerto for trumpet and Chamber orchestra in Eb major
album: Danish Music For Brass 21: Concerto for trumpet and Chamber orchestra in D major
album: Danish Music for Brass 16
album: Danish Music for Brass 19
album: Danish Music for Brass 18
album: Visions from the North

Energy
type: PropertyValue
value: 0.16

Speechiness
type: PropertyValue
value: 0.046

Acousticness
type: PropertyValue
value: 0.975

Instrumentalness
type: PropertyValue
value: 0.912

Liveness
type: PropertyValue
value: 0.098

Valence (Positivity)
type: PropertyValue
value: 0.276

Loudness (dB)
type: PropertyValue
value: -27.138

Key Name
type: PropertyValue
value: D

Mode Name
type: PropertyValue
value: Major

Danish Music for Brass 20
type: MusicAlbum
date published: 2019-09-13

Danish Music for Brass 17
type: MusicAlbum
date published: 2019-09-13

Danish Music for Brass 11
type: MusicAlbum
date published: 2019-09-13

Smile
type: MusicAlbum
date published: 2012-10-04

Danish Music for Brass 5
type: MusicAlbum
date published: 1983-01-02
track: Tango Jalousi
  type: MusicRecording
  duration: PT4M9S
  duration ms: 249816
  explicit: false
  by artist: Ketil Christensen
  by artist: Royal Danish Orchestra
  in album: Danish Music for Brass 5
    type: MusicAlbum
    date published: 1983-01-02
  isrc code: QM4TW1967337
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-30T14:53:48+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x4ca9aa0a81dd875a4a4f11ff42bd60de6c3b0c58f3e4e65945db2d65b075f116
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 960273
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/960273
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM4TW1967337
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-30T15:42:38Z
  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 0x4ca9aa0a81dd875a4a4f11ff42bd60de6c3b0c58f3e4e65945db2d65b075f116. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/QM4TW1967337.
    date published: 2026-07-30T15:42:38Z
  audio: Tango Jalousi
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 122.076
    additional property: Musical Key
      type: PropertyValue
      value: 10
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.26
    additional property: Energy
      type: PropertyValue
      value: 0.091
    additional property: Speechiness
      type: PropertyValue
      value: 0.039
    additional property: Acousticness
      type: PropertyValue
      value: 0.984
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.899
    additional property: Liveness
      type: PropertyValue
      value: 0.121
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.104
    additional property: Loudness (dB)
      type: PropertyValue
      value: -22.202
    additional property: Key Name
      type: PropertyValue
      value: Bb
    additional property: Mode Name
      type: PropertyValue
      value: Major

Danish Music For Brass 21: Concerto for trumpet and orchestra in Eb major
type: MusicAlbum
date published: 2024-10-20

Danish Music For Brass 21: Concerto for trumpet and Chamber orchestra in Eb major
type: MusicAlbum
date published: 2024-10-20

Danish Music For Brass 21: Concerto for trumpet and Chamber orchestra in D major
type: MusicAlbum
date published: 2024-10-20

Danish Music for Brass 16
type: MusicAlbum
date published: 2020-08-07

Danish Music for Brass 19
type: MusicAlbum
date published: 2019-09-13

Danish Music for Brass 18
type: MusicAlbum
date published: 2019-09-13

Visions from the North
type: MusicAlbum
date published: 1999-01-01