Mathias Dahl Fredriksson
type: MusicGroup
popularity: 10
followers: 42
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x68aa1b58c64a7dc824f85c3aa8999b277318911d9c65927bb6524394be83991a
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954346
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954346
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/936c65a0-d5c9-4af9-b85e-2e315737f259.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/936c65a0-d5c9-4af9-b85e-2e315737f259.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/936c65a0-d5c9-4af9-b85e-2e315737f259
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:51:26Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x68aa1b58c64a7dc824f85c3aa8999b277318911d9c65927bb6524394be83991a","name":"Mathias Dahl Fredriksson","registered_at":"2026-06-17T17:06:59Z","symbol":"NIM1461977","token_address":"0x797f8b01a6be7f5b48d9c463a59e3890b00e88b8","type":"artist","uuid":"936c65a0-d5c9-4af9-b85e-2e315737f259"}
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 0x68aa1b58c64a7dc824f85c3aa8999b277318911d9c65927bb6524394be83991a. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/936c65a0-d5c9-4af9-b85e-2e315737f259.json and https://artists.proofprofile.net/proofs/artist/936c65a0-d5c9-4af9-b85e-2e315737f259.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:51:26Z
  text: {"copyright_id":"0x68aa1b58c64a7dc824f85c3aa8999b277318911d9c65927bb6524394be83991a","name":"Mathias Dahl Fredriksson","registered_at":"2026-06-17T17:06:59Z","symbol":"NIM1461977","token_address":"0x797f8b01a6be7f5b48d9c463a59e3890b00e88b8","type":"artist","uuid":"936c65a0-d5c9-4af9-b85e-2e315737f259"}
album: Midnight Melodies
  type: MusicAlbum
  date published: 2023-05-18
album: Spaced Out
  type: MusicAlbum
  date published: 2023-07-07
album: Heavy Rain
  type: MusicAlbum
  date published: 2023-10-11
  track: A Moment
    type: MusicRecording
    duration: PT2M37S
    duration ms: 157333
    explicit: false
    by artist: Mathias Dahl Fredriksson
    in album: Heavy Rain
      type: MusicAlbum
      date published: 2023-10-11
    isrc code: QZMHN2331429
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-21T11:33:57+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x38a7a409acd2a28ab9a96e3a47d164da777e1ad1d7350aa9a255376ee8dc404c
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 959002
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/959002
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMHN2331429
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-21T14:37:21Z
    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 0x38a7a409acd2a28ab9a96e3a47d164da777e1ad1d7350aa9a255376ee8dc404c. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T14:37:21Z), 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/QZMHN2331429.
      date published: 2026-07-21T14:37:21Z
    audio: A Moment
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 90.035
      additional property: Musical Key
        type: PropertyValue
        value: 1
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.366
      additional property: Energy
        type: PropertyValue
        value: 0.009
      additional property: Speechiness
        type: PropertyValue
        value: 0.037
      additional property: Acousticness
        type: PropertyValue
        value: 0.993
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.955
      additional property: Liveness
        type: PropertyValue
        value: 0.151
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.083
      additional property: Loudness (dB)
        type: PropertyValue
        value: -33.664
      additional property: Key Name
        type: PropertyValue
        value: C#
      additional property: Mode Name
        type: PropertyValue
        value: Major
  track: The First Drop
    type: MusicRecording
    duration: PT2M6S
    duration ms: 126000
    explicit: false
    by artist: Mathias Dahl Fredriksson
    in album: Heavy Rain
      type: MusicAlbum
      date published: 2023-10-11
    isrc code: QM42K2384623
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-21T09:56:48+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xdc4f54cdd7efb8e25c4492ee72399dec568c985eb9831a6a21d7ea6269d546b7
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958996
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958996
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM42K2384623
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-21T12:59:09Z
    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 0xdc4f54cdd7efb8e25c4492ee72399dec568c985eb9831a6a21d7ea6269d546b7. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T12:59:09Z), 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/QM42K2384623.
      date published: 2026-07-21T12:59:09Z
    audio: The First Drop
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 90.086
      additional property: Musical Key
        type: PropertyValue
        value: 4
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.463
      additional property: Energy
        type: PropertyValue
        value: 0.023
      additional property: Speechiness
        type: PropertyValue
        value: 0.036
      additional property: Acousticness
        type: PropertyValue
        value: 0.984
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.94
      additional property: Liveness
        type: PropertyValue
        value: 0.109
      additional property: Valence (Positivity)
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name

Valence (Positivity)
type: PropertyValue
value: 0.275

Loudness (dB)
type: PropertyValue
value: -29.484

Key Name
type: PropertyValue
value: E

Mode Name
type: PropertyValue
value: Major