Sofie Mathiasen
type: MusicGroup
popularity: 8
followers: 752
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x9ac515f8c36389d371a25f511720402eae25d3db72094cdca408a7ede355c216
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954516
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954516
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a38bdd9b-97c5-4f28-a197-1ca3bbe48a20.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a38bdd9b-97c5-4f28-a197-1ca3bbe48a20.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/a38bdd9b-97c5-4f28-a197-1ca3bbe48a20
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T07:04:44Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x9ac515f8c36389d371a25f511720402eae25d3db72094cdca408a7ede355c216","name":"Sofie Mathiasen","registered_at":"2026-06-20T06:18:50Z","symbol":"NIM1541474","token_address":"0xcc861012b05593e9a56921eda31e399e13006d0e","type":"artist","uuid":"a38bdd9b-97c5-4f28-a197-1ca3bbe48a20"}
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 0x9ac515f8c36389d371a25f511720402eae25d3db72094cdca408a7ede355c216. Chain 2 (Bitcoin): anchored in block 954516 (2026-06-20T07:04:44Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a38bdd9b-97c5-4f28-a197-1ca3bbe48a20.json and https://artists.proofprofile.net/proofs/artist/a38bdd9b-97c5-4f28-a197-1ca3bbe48a20.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T07:04:44Z
  text: {"copyright_id":"0x9ac515f8c36389d371a25f511720402eae25d3db72094cdca408a7ede355c216","name":"Sofie Mathiasen","registered_at":"2026-06-20T06:18:50Z","symbol":"NIM1541474","token_address":"0xcc861012b05593e9a56921eda31e399e13006d0e","type":"artist","uuid":"a38bdd9b-97c5-4f28-a197-1ca3bbe48a20"}
album: 4-A
  type: MusicAlbum
  date published: 2021-04-08
album: Magnetic Love
  type: MusicAlbum
  date published: 2022-04-29
album: Before We Say Goodbye
  type: MusicAlbum
  date published: 2022-07-01
album: Selenite
  type: MusicAlbum
  date published: 2022-12-16
album: Before We Say Goodbye (Sped Up)
  type: MusicAlbum
  date published: 2023-02-17
album: Sindy
  type: MusicAlbum
  date published: 2023-06-09
album: Smile
  type: MusicAlbum
  date published: 2023-10-12
album: Time After Time
  type: MusicAlbum
  date published: 2024-06-13
  track: Time After Time
    type: MusicRecording
    duration: PT4M8S
    duration ms: 248681
    explicit: false
    by artist: Sofie Mathiasen
    in album: Time After Time
      type: MusicAlbum
      date published: 2024-06-13
    isrc code: ATIS82400012
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-18T21:46:44+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x579286f73971d419fc22db26eb209799c5deba17693fb9b46c1af45eb3680163
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958621
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958621
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ATIS82400012
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-18T22:59:44Z
    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 0x579286f73971d419fc22db26eb209799c5deba17693fb9b46c1af45eb3680163. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/ATIS82400012.
      date published: 2026-07-18T22:59:44Z
    audio: Time After Time
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 123.987
      additional property: Musical Key
        type: PropertyValue
        value: 0
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.659
      additional property: Energy
        type: PropertyValue
        value: 0.727
      additional property: Speechiness
        type: PropertyValue
        value: 0.043
      additional property: Acousticness
        type: PropertyValue
        value: 0.078
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.139
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.366
      additional property: Loudness (dB)
        type: PropertyValue
        value: -7.092
      additional property: Key Name
        type: PropertyValue
        value: C
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: 4A
  type: MusicAlbum
  date published: 2025-03-14
  track: 4A
    type: MusicRecording
    duration: PT3M39S
    duration ms: 219264
    explicit: false
    by artist: Sofie Mathiasen
    in album: 4A
      type: MusicAlbum
      date published: 2025-03-14
    isrc code: ATIS82500014
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-02T21:31:59+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x23e494e81e03b6efb665d0671949cfaf979715289a5f1d45fdc435c1deb4e310
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956420
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956420
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ATIS82500014
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-03T00:42:11Z
    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 0x23e494e81e03b6efb665d0671949cfaf979715289a5f1d45fdc435c1deb4e310. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/ATIS82500014.
      date published: 2026-07-03T00:42:11Z
    audio: 4A
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 146.729
      additional property: Musical Key
        type: PropertyValue
        value: 0
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
      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: Before We Say Goodbye (EP)

Danceability
type: PropertyValue
value: 0.64

Energy
type: PropertyValue
value: 0.395

Speechiness
type: PropertyValue
value: 0.058

Acousticness
type: PropertyValue
value: 0.791

Instrumentalness
type: PropertyValue
value: 0

Liveness
type: PropertyValue
value: 0.17

Valence (Positivity)
type: PropertyValue
value: 0.534

Loudness (dB)
type: PropertyValue
value: -10.579

Key Name
type: PropertyValue
value: C

Mode Name
type: PropertyValue
value: Major

Before We Say Goodbye (EP)
type: MusicAlbum
date published: 2025-08-13