Ludde & Hasse
type: MusicGroup
popularity: 7
followers: 214
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x0c25c35a5f06314a5f335ed6bee9e9f96c8f759885a68b6d0893c5af4348d02d
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954705
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954705
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ee39c5e3-ce1b-4f1f-9c19-a4e75d5f8278.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ee39c5e3-ce1b-4f1f-9c19-a4e75d5f8278.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/ee39c5e3-ce1b-4f1f-9c19-a4e75d5f8278
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T13:42:37Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x0c25c35a5f06314a5f335ed6bee9e9f96c8f759885a68b6d0893c5af4348d02d","name":"Ludde & Hasse","registered_at":"2026-06-21T12:01:05Z","symbol":"NIM1917879","token_address":"0x430a561c0b32efe8eebbb9b945f24949f021876b","type":"artist","uuid":"ee39c5e3-ce1b-4f1f-9c19-a4e75d5f8278"}
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 0x0c25c35a5f06314a5f335ed6bee9e9f96c8f759885a68b6d0893c5af4348d02d. Chain 2 (Bitcoin): anchored in block 954705 (2026-06-21T13:42:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ee39c5e3-ce1b-4f1f-9c19-a4e75d5f8278.json and https://artists.proofprofile.net/proofs/artist/ee39c5e3-ce1b-4f1f-9c19-a4e75d5f8278.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T13:42:37Z
  text: {"copyright_id":"0x0c25c35a5f06314a5f335ed6bee9e9f96c8f759885a68b6d0893c5af4348d02d","name":"Ludde & Hasse","registered_at":"2026-06-21T12:01:05Z","symbol":"NIM1917879","token_address":"0x430a561c0b32efe8eebbb9b945f24949f021876b","type":"artist","uuid":"ee39c5e3-ce1b-4f1f-9c19-a4e75d5f8278"}
album: Ludde & Hasse
  type: MusicAlbum
  date published: 2020-05-18
  track: Luddevisan
    type: MusicRecording
    duration: PT4M58S
    duration ms: 298946
    explicit: false
    by artist: Ludde & Hasse
    in album: Ludde & Hasse
      type: MusicAlbum
      date published: 2020-05-18
    isrc code: SEXXZ2001802
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-17T23:42:10+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x0d9ca13910560dc4249734f5c23eb1a7f640f2a201bb38dfe9c22632f9a48871
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958468
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958468
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEXXZ2001802
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-18T00:27:51Z
    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 0x0d9ca13910560dc4249734f5c23eb1a7f640f2a201bb38dfe9c22632f9a48871. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/SEXXZ2001802.
      date published: 2026-07-18T00:27:51Z
    audio: Luddevisan
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 120.018
      additional property: Musical Key
        type: PropertyValue
        value: 7
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 3
      additional property: Danceability
        type: PropertyValue
        value: 0.776
      additional property: Energy
        type: PropertyValue
        value: 0.434
      additional property: Speechiness
        type: PropertyValue
        value: 0.597
      additional property: Acousticness
        type: PropertyValue
        value: 0.226
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.108
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.74
      additional property: Loudness (dB)
        type: PropertyValue
        value: -12.292
      additional property: Key Name
        type: PropertyValue
        value: G
      additional property: Mode Name
        type: PropertyValue
        value: Major
  track: Hej skojeri
    type: MusicRecording
    duration: PT4M35S
    duration ms: 275053
    explicit: false
    by artist: Ludde & Hasse
    in album: Ludde & Hasse
      type: MusicAlbum
      date published: 2020-05-18
    isrc code: SEXXZ2001803
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-06T00:47:53+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x5bd4020793027474f2d7879ede9e77c1eaf8417a402275486f666fb1af9409a3
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956856
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956856
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEXXZ2001803
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-06T01:25:57Z
    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 0x5bd4020793027474f2d7879ede9e77c1eaf8417a402275486f666fb1af9409a3. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/SEXXZ2001803.
      date published: 2026-07-06T01:25:57Z
    audio: Hej skojeri
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 126.004
      additional property: Musical Key
        type: PropertyValue
        value: 7
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.919
      additional property: Energy
        type: PropertyValue
        value: 0.431
      additional property: Speechiness
        type: PropertyValue
        value: 0.462
      additional property: Acousticness
        type: PropertyValue
        value: 0.249
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.252
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.659
      additional property: Loudness (dB)
        type: PropertyValue
        value: -11.905
      additional property: Key Name
      additional property: Mode Name

Key Name
type: PropertyValue
value: G

Mode Name
type: PropertyValue
value: Major