Jan Stigmer
type: MusicGroup
popularity: 2
followers: 225
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953867
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
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additional property: OTSProofURL
  type: PropertyValue
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additional property: OTSRecordURL
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additional property: OTSVerificationAPI
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  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/05a00d0d-016e-4285-b7c6-bb4404ca8a83
additional property: OTSTimestamp
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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
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabdc78318111349981701ab442572dd06797ac6de133488745d261890249a3b1. Chain 2 (Bitcoin): anchored in block 953867 (2026-06-16T01:09:47Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/05a00d0d-016e-4285-b7c6-bb4404ca8a83.json and https://artists.proofprofile.net/proofs/artist/05a00d0d-016e-4285-b7c6-bb4404ca8a83.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T01:09:47Z
  text: {"copyright_id":"0xabdc78318111349981701ab442572dd06797ac6de133488745d261890249a3b1","name":"Jan Stigmer","registered_at":"2026-06-15T15:33:15Z","symbol":"NIM0752463","token_address":"0x4fe9879b4d86b76c5abdb81a93fba9932fd6a9c6","type":"artist","uuid":"05a00d0d-016e-4285-b7c6-bb4404ca8a83"}
album: The Swedish Violin
  type: MusicAlbum
  date published: 2010-10-01
  track: Sommar (arr. J. Johansson)
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    duration: PT4M40S
    duration ms: 280906
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    by artist: Jerker Johansson
    by artist: Sven Sköld
    by artist: Jan Stigmer
    by artist: Camerata Romana
    by artist: Thord Svedlund
    in album: The Swedish Violin
      type: MusicAlbum
      date published: 2010-10-01
    popularity: 2
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    additional property: CopyrightStatus
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    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEXMD9402809
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-08-01T00:40:43Z
    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 0xc674fe0975f1ae18fed1b5a789e89dfbc60129cd99767a875d7bd299937c4efb. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/SEXMD9402809.
      date published: 2026-08-01T00:40:43Z
    audio: Sommar (arr. J. Johansson)
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      additional property: Tempo (BPM)
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        value: 100.819
      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: 0.138
      additional property: Energy
        type: PropertyValue
        value: 0.056
      additional property: Speechiness
        type: PropertyValue
        value: 0.052
      additional property: Acousticness
        type: PropertyValue
        value: 0.962
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.89
      additional property: Liveness
        type: PropertyValue
        value: 0.183
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.045
      additional property: Loudness (dB)
        type: PropertyValue
        value: -26.77
      additional property: Key Name
        type: PropertyValue
        value: G
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album: Roman: Solo Concertos
  type: MusicAlbum
  date published: 2010-10-01
album: Paganini: 24 Caprices, Op.1
  type: MusicAlbum
  date published: 2013-11-11
album: The Swedish Oboe
  type: MusicAlbum
  date published: 2010-10-01
album: The 4 Temperaments
  type: MusicAlbum
  date published: 2010-10-01
album: Nordic Favourites for String Orchestra
  type: MusicAlbum
  date published: 2010-10-01
album: Haydn: The Violin Concertos
  type: MusicAlbum
  date published: 2010-10-01
album: A Norwegian Rendezvous
  type: MusicAlbum
  date published: 2010-10-01
album: Den vilde pojkens sånger / 4 Kärlekssånger
  type: MusicAlbum
  date published: 2010-10-01
album: Den vilde pojkens sanger / 4 Karlekssanger
  type: MusicAlbum
  date published: 2010-10-01
  track: 4 Karlekssanger (4 Love Songs): No. 2. Andra Sangen (The Second Song)
    type: MusicRecording
    duration: PT5M42S
    duration ms: 342253
    explicit: false
    by artist: Johan Hammerth
    by artist: Hannah Holgersson
    by artist: Jonkoping Sinfonietta
    by artist: Jan Stigmer
    in album: Den vilde pojkens sanger / 4 Karlekssanger
      type: MusicAlbum
      date published: 2010-10-01
    isrc code: USB8U1029389
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
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    additional property: OTSBitcoinBlock
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    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
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    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USB8U1029389
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-31T15:20:15Z
    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 0x1482eab8f9f11f45b97189943f95e3fc91759527ee26df1038f749d19483d292. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/USB8U1029389.
      date published: 2026-07-31T15:20:15Z
    audio: 4 Karlekssanger (4 Love Songs): No. 2. Andra Sangen (The Second Song)
  track: 4 Karlekssanger (4 Love Songs): No. 3. Tredje Sangen (The Third Song)
album: Larsson: Twelve Concertinos 8-12

4 Karlekssanger (4 Love Songs): No. 2. Andra Sangen (The Second Song)
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additional property: Tempo (BPM)
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  value: 122.711
additional property: Musical Key
  type: PropertyValue
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additional property: Mode (Major/Minor)
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  value: 0
additional property: Time Signature
  type: PropertyValue
  value: 5
additional property: Danceability
  type: PropertyValue
  value: 0.284
additional property: Energy
  type: PropertyValue
  value: 0.146
additional property: Speechiness
  type: PropertyValue
  value: 0.039
additional property: Acousticness
  type: PropertyValue
  value: 0.968
additional property: Instrumentalness
  type: PropertyValue
  value: 0.023
additional property: Liveness
  type: PropertyValue
  value: 0.094
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.084
additional property: Loudness (dB)
  type: PropertyValue
  value: -20.82
additional property: Key Name
  type: PropertyValue
  value: E
additional property: Mode Name
  type: PropertyValue
  value: Minor

4 Karlekssanger (4 Love Songs): No. 3. Tredje Sangen (The Third Song)
type: MusicRecording
duration: PT6M58S
duration ms: 418266
explicit: false
by artist: Johan Hammerth
by artist: Hannah Holgersson
by artist: Jonkoping Sinfonietta
by artist: Jan Stigmer
in album: Den vilde pojkens sanger / 4 Karlekssanger
  type: MusicAlbum
  date published: 2010-10-01
isrc code: USB8U1029390
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
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  value: 2026-07-07T17:42:26+00:00
additional property: CopyrightChainExplorerURL
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  value: https://explorer.copyrightchains.com/tx/0xc2f0319fc953b74f29da83a46b950b84bbae5c6d06f31d3f7351223c6d21dcc1
additional property: OTSHash
additional property: OTSBitcoinBlock
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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/USB8U1029390
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 0xc2f0319fc953b74f29da83a46b950b84bbae5c6d06f31d3f7351223c6d21dcc1. 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/USB8U1029390.
  date published: 2026-07-08T03:20:19Z
audio: 4 Karlekssanger (4 Love Songs): No. 3. Tredje Sangen (The Third Song)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 109.794
  additional property: Musical Key
    type: PropertyValue
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  additional property: Mode (Major/Minor)
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  additional property: Danceability
    type: PropertyValue
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    type: PropertyValue
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  additional property: Speechiness
    type: PropertyValue
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  additional property: Acousticness
    type: PropertyValue
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    type: PropertyValue
    value: 0.227
  additional property: Liveness
    type: PropertyValue
    value: 0.183
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.069
  additional property: Loudness (dB)
    type: PropertyValue
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    type: PropertyValue
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Larsson: Twelve Concertinos 8-12
type: MusicAlbum
date published: 2010-10-01