Leif Andersson
type: MusicGroup
popularity: 6
followers: 239
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x2a44c3d5f635cdcfc4a9c3c94ef8048cb1fe5fde7182886ebf2b1b14710f66ce
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954065
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954065
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/498536e6-e320-4e0f-afc3-56f61647de1e.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/498536e6-e320-4e0f-afc3-56f61647de1e.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/498536e6-e320-4e0f-afc3-56f61647de1e
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:10:43Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x2a44c3d5f635cdcfc4a9c3c94ef8048cb1fe5fde7182886ebf2b1b14710f66ce","name":"Leif Andersson","registered_at":"2026-06-16T15:09:04Z","symbol":"NIM1090382","token_address":"0xbbf2a17b856d3854364f38fca79da82df2c3cbec","type":"artist","uuid":"498536e6-e320-4e0f-afc3-56f61647de1e"}
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 0x2a44c3d5f635cdcfc4a9c3c94ef8048cb1fe5fde7182886ebf2b1b14710f66ce. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/498536e6-e320-4e0f-afc3-56f61647de1e.json and https://artists.proofprofile.net/proofs/artist/498536e6-e320-4e0f-afc3-56f61647de1e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:10:43Z
  text: {"copyright_id":"0x2a44c3d5f635cdcfc4a9c3c94ef8048cb1fe5fde7182886ebf2b1b14710f66ce","name":"Leif Andersson","registered_at":"2026-06-16T15:09:04Z","symbol":"NIM1090382","token_address":"0xbbf2a17b856d3854364f38fca79da82df2c3cbec","type":"artist","uuid":"498536e6-e320-4e0f-afc3-56f61647de1e"}
album: Med Andra Ord / Kind Mot Kind (Remastered)
  type: MusicAlbum
  date published: 2016-08-25
album: Med Andra Ord / Kind Mot Kind
  type: MusicAlbum
  date published: 2016-08-25
  track: Kind Mot Kind - Remastered
    type: MusicRecording
    duration: PT2M19S
    duration ms: 139000
    explicit: false
    by artist: Leif Andersson
    in album: Med Andra Ord / Kind Mot Kind
      type: MusicAlbum
      date published: 2016-08-25
    isrc code: SEVZE1600202
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-05T04:45:42+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xc8c516433ec22a0f684f617d341f6ddd667ad4de40921abe0f77145fb62ddea4
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956790
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956790
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEVZE1600202
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T12:31:54Z
    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 0xc8c516433ec22a0f684f617d341f6ddd667ad4de40921abe0f77145fb62ddea4. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/SEVZE1600202.
      date published: 2026-07-05T12:31:54Z
    audio: Kind Mot Kind - Remastered
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 166.858
      additional property: Musical Key
        type: PropertyValue
        value: 11
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 3
      additional property: Danceability
        type: PropertyValue
        value: 0.47
      additional property: Energy
        type: PropertyValue
        value: 0.039
      additional property: Speechiness
        type: PropertyValue
        value: 0.055
      additional property: Acousticness
        type: PropertyValue
        value: 0.96
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.074
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.253
      additional property: Loudness (dB)
        type: PropertyValue
        value: -8.611
      additional property: Key Name
        type: PropertyValue
        value: B
      additional property: Mode Name
        type: PropertyValue
        value: Major