Fríði Sigmundsson
type: MusicGroup
popularity: 5
followers: 249
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x0f4564e76d1f4910f528b7cacdf3d936c67a43b3f7270e6c61a979c67b2b912f
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954066
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954066
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/74965e5c-c3a9-4780-a9bb-1d03945d9d83.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/74965e5c-c3a9-4780-a9bb-1d03945d9d83.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/74965e5c-c3a9-4780-a9bb-1d03945d9d83
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x0f4564e76d1f4910f528b7cacdf3d936c67a43b3f7270e6c61a979c67b2b912f","name":"Fríði Sigmundsson","registered_at":"2026-06-17T06:08:52Z","symbol":"NIM1305095","token_address":"0x9910954b395141d940df8eb005d47e3ead800fd1","type":"artist","uuid":"74965e5c-c3a9-4780-a9bb-1d03945d9d83"}
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 0x0f4564e76d1f4910f528b7cacdf3d936c67a43b3f7270e6c61a979c67b2b912f. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/74965e5c-c3a9-4780-a9bb-1d03945d9d83.json and https://artists.proofprofile.net/proofs/artist/74965e5c-c3a9-4780-a9bb-1d03945d9d83.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0x0f4564e76d1f4910f528b7cacdf3d936c67a43b3f7270e6c61a979c67b2b912f","name":"Fríði Sigmundsson","registered_at":"2026-06-17T06:08:52Z","symbol":"NIM1305095","token_address":"0x9910954b395141d940df8eb005d47e3ead800fd1","type":"artist","uuid":"74965e5c-c3a9-4780-a9bb-1d03945d9d83"}
album: Her hjá mær
  type: MusicAlbum
  date published: 2020-05-15
  track: Her hjá mær
    type: MusicRecording
    duration: PT2M52S
    duration ms: 172338
    explicit: false
    by artist: Fríði Sigmundsson
    in album: Her hjá mær
      type: MusicAlbum
      date published: 2020-05-15
    isrc code: QZES92045632
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-18T19:49:04+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xd4a5ab7d761fe1ef2cb9818fceff138f73e02e257177befda885d01873ae707b
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958612
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958612
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES92045632
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-18T21:29:37Z
    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 0xd4a5ab7d761fe1ef2cb9818fceff138f73e02e257177befda885d01873ae707b. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/QZES92045632.
      date published: 2026-07-18T21:29:37Z
    audio: Her hjá mær
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 133.033
      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: 0.682
      additional property: Energy
        type: PropertyValue
        value: 0.739
      additional property: Speechiness
        type: PropertyValue
        value: 0.031
      additional property: Acousticness
        type: PropertyValue
        value: 0.006
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.093
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.909
      additional property: Loudness (dB)
        type: PropertyValue
        value: -5.203
      additional property: Key Name
        type: PropertyValue
        value: C
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Saman og frí
  type: MusicAlbum
  date published: 2021-03-18
album: Nýt løturnar
  type: MusicAlbum
  date published: 2021-10-08
album: Alt vendir
  type: MusicAlbum
  date published: 2022-07-06
album: Hvar ert tú
  type: MusicAlbum
  date published: 2024-04-05