Trollskogen
type: MusicGroup
genre: swedish ballads
description: thumb|280px|Windswept pines with contorted shapes in Trollskogen thumb|280px|Wreck of the three-masted schooner Swiks thumb|280px|Area map with Trollskogen's boundary in green. Trollskogen ("enchanted
popularity: 16
followers: 1158
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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  value: https://explorer.copyrightchains.com/tx/0x3cb54847785b8867f6b2924bb04cc2091e512b7c582496e6724a1850ed729d1d
additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSProofURL
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  value: https://artists.proofprofile.net/proofs/artist/f0c646bf-4e6e-4fe0-a3b1-f1e5c32101d5.ots
additional property: OTSRecordURL
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additional property: OTSVerificationAPI
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additional property: OTSCanonicalRecord
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 0x3cb54847785b8867f6b2924bb04cc2091e512b7c582496e6724a1850ed729d1d. Chain 2 (Bitcoin): anchored in block 953807 (2026-06-15T16:39:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f0c646bf-4e6e-4fe0-a3b1-f1e5c32101d5.json and https://artists.proofprofile.net/proofs/artist/f0c646bf-4e6e-4fe0-a3b1-f1e5c32101d5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T16:39:18Z
album: Vargsången
  type: MusicAlbum
  date published: 2015-08-03
album: Ack Värmeland, du sköna
  type: MusicAlbum
  date published: 2017-09-28
  track: Ack Värmeland, du sköna
    type: MusicRecording
    duration: PT2M52S
    duration ms: 172380
    explicit: false
    by artist: Trollskogen
    in album: Ack Värmeland, du sköna
      type: MusicAlbum
      date published: 2017-09-28
    genre: swedish ballads
    isrc code: USHM81789988
    additional property: CopyrightID
    additional property: CopyrightStatus
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      value: registered
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    additional property: OTSBitcoinBlockVerifyURL
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    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM81789988
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-15T09:47:57Z
    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 0xf1901f296ad412229172826b6254f020a3553379276e29c2c7b58e8328e5c4ba. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/USHM81789988.
      date published: 2026-07-15T09:47:57Z
    audio: Ack Värmeland, du sköna
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 126.058
      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: 0.62
      additional property: Energy
        type: PropertyValue
        value: 0.105
      additional property: Speechiness
        type: PropertyValue
        value: 0.035
      additional property: Acousticness
        type: PropertyValue
        value: 0.901
      additional property: Instrumentalness
        type: PropertyValue
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      additional property: Liveness
        type: PropertyValue
        value: 0.105
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.193
      additional property: Loudness (dB)
        type: PropertyValue
        value: -16.687
      additional property: Key Name
        type: PropertyValue
        value: G
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Trollmors Vaggsång
  type: MusicAlbum
  date published: 2018-06-26
album: Vintern
  type: MusicAlbum
  date published: 2018-12-01
  track: Vintern
    type: MusicRecording
    duration: PT4M2S
    duration ms: 242757
    explicit: false
    by artist: Trollskogen
    in album: Vintern
      type: MusicAlbum
      date published: 2018-12-01
    genre: swedish ballads
    isrc code: SE2991800201
    additional property: CopyrightID
    additional property: CopyrightStatus
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      value: registered
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      value: 2026-07-22T01:59:24+00:00
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    additional property: OTSBitcoinBlock
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    additional property: OTSBitcoinBlockVerifyURL
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      value: https://blockstream.info/api/block-height/959088
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SE2991800201
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-22T02:14:33Z
    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 0x5040b3802fd369dfb612bdbccc3f91dc54c63469e63cd9e713ff29e47d5c2445. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T02:14:33Z), 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/SE2991800201.
      date published: 2026-07-22T02:14:33Z
    audio: Vintern
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 139.835
      additional property: Musical Key
        type: PropertyValue
        value: 9
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
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      additional property: Energy
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      additional property: Speechiness
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      additional property: Acousticness
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      additional property: Instrumentalness
      additional property: Liveness
      additional property: Valence (Positivity)
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name
album: Tomten
album: Luffarvisan

Instrumentalness
type: PropertyValue
value: 0

Liveness
type: PropertyValue
value: 0.092

Valence (Positivity)
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value: 0.152

Loudness (dB)
type: PropertyValue
value: -16.5

Key Name
type: PropertyValue
value: A

Mode Name
type: PropertyValue
value: Minor

Tomten
type: MusicAlbum
date published: 2021-11-28

Luffarvisan
type: MusicAlbum
date published: 2022-06-11

Tomten
type: MusicAlbum
date published: 2022-11-04