The Lionheads
type: MusicGroup
genre: norwegian pop
popularity: 7
followers: 1390
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xb952ccd15bbc8ffd72b09bd4b2beab223b160b25a6dea909a039c5c6673f28ee
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/4ae62822-9bb2-471f-8f7b-c263f81f8cb9.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/4ae62822-9bb2-471f-8f7b-c263f81f8cb9.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/4ae62822-9bb2-471f-8f7b-c263f81f8cb9
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:10:43Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xb952ccd15bbc8ffd72b09bd4b2beab223b160b25a6dea909a039c5c6673f28ee","name":"The Lionheads","registered_at":"2026-06-16T15:39:57Z","symbol":"NIM1097768","token_address":"0xba714ceb674f7b35210aab8088928780c1840131","type":"artist","uuid":"4ae62822-9bb2-471f-8f7b-c263f81f8cb9"}
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 0xb952ccd15bbc8ffd72b09bd4b2beab223b160b25a6dea909a039c5c6673f28ee. 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/4ae62822-9bb2-471f-8f7b-c263f81f8cb9.json and https://artists.proofprofile.net/proofs/artist/4ae62822-9bb2-471f-8f7b-c263f81f8cb9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:10:43Z
  text: {"copyright_id":"0xb952ccd15bbc8ffd72b09bd4b2beab223b160b25a6dea909a039c5c6673f28ee","name":"The Lionheads","registered_at":"2026-06-16T15:39:57Z","symbol":"NIM1097768","token_address":"0xba714ceb674f7b35210aab8088928780c1840131","type":"artist","uuid":"4ae62822-9bb2-471f-8f7b-c263f81f8cb9"}
album: Kids
  type: MusicAlbum
  date published: 2012-09-17
album: Kids
  type: MusicAlbum
  date published: 2012-09-17
album: Kids
  type: MusicAlbum
  date published: 2012-09-17
album: Exit
  type: MusicAlbum
  date published: 2013-06-17
album: Exit
  type: MusicAlbum
  date published: 2013-06-17
album: City on Fire
  type: MusicAlbum
  date published: 2013-11-18
album: City On Fire
  type: MusicAlbum
  date published: 2013-11-18
album: Everything Will Mean Something
  type: MusicAlbum
  date published: 2014-04-25
album: Everything Will Mean Something
  type: MusicAlbum
  date published: 2014-04-25
album: Human Walk
  type: MusicAlbum
  date published: 2014-09-08
  track: City on Fire
    type: MusicRecording
    duration: PT4M27S
    duration ms: 267333
    explicit: false
    by artist: The Lionheads
    in album: Human Walk
      type: MusicAlbum
      date published: 2014-09-08
    genre: norwegian pop
    isrc code: GB5EA1302060
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-17T21:16:45+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x96b03ab04e59825d20176811a3507fa927b8ece725fa9d0bb2d8d4fa2cc83b63
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958461
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958461
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GB5EA1302060
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-17T23:18:11Z
    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 0x96b03ab04e59825d20176811a3507fa927b8ece725fa9d0bb2d8d4fa2cc83b63. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/GB5EA1302060.
      date published: 2026-07-17T23:18:11Z
    audio: City on Fire
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 147.971
      additional property: Musical Key
        type: PropertyValue
        value: 3
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.397
      additional property: Energy
        type: PropertyValue
        value: 0.714
      additional property: Speechiness
        type: PropertyValue
        value: 0.039
      additional property: Acousticness
        type: PropertyValue
        value: 0
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.336
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.311
      additional property: Loudness (dB)
        type: PropertyValue
        value: -6.485
      additional property: Key Name
        type: PropertyValue
        value: Eb
      additional property: Mode Name
        type: PropertyValue
        value: Major
  track: House of Cards
    type: MusicRecording
    duration: PT4M1S
    duration ms: 241253
    explicit: false
    by artist: The Lionheads
    in album: Human Walk
      type: MusicAlbum
      date published: 2014-09-08
    genre: norwegian pop
    isrc code: GB5EA1401954
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-18T07:48:48+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xd03e88f17a2962d2fe33ab2142b4f3457b9dc1401359714b874a98b6426cb0c0
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958520
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958520
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GB5EA1401954
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-18T08:19:09Z
    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 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 0xd03e88f17a2962d2fe33ab2142b4f3457b9dc1401359714b874a98b6426cb0c0. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/GB5EA1401954.
      date published: 2026-07-18T08:19:09Z
    audio: House of Cards
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 177.863
      additional property: Musical Key
        type: PropertyValue
        value: 10
      additional property: Mode (Major/Minor)
      additional property: Time Signature
      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: Burning Bridges
album: Two
album: Something Real
album: House of Cards

Mode (Major/Minor)
type: PropertyValue
value: 1

Time Signature
type: PropertyValue
value: 4

Danceability
type: PropertyValue
value: 0.337

Energy
type: PropertyValue
value: 0.712

Speechiness
type: PropertyValue
value: 0.03

Acousticness
type: PropertyValue
value: 0

Instrumentalness
type: PropertyValue
value: 0

Liveness
type: PropertyValue
value: 0.114

Valence (Positivity)
type: PropertyValue
value: 0.21

Loudness (dB)
type: PropertyValue
value: -6.397

Key Name
type: PropertyValue
value: Bb

Mode Name
type: PropertyValue
value: Major

Human Walk
type: MusicAlbum
date published: 2014-09-08

Burning Bridges
type: MusicAlbum
date published: 2015-07-01

Burning Bridges
type: MusicAlbum
date published: 2015-07-01

Two
type: MusicAlbum
date published: 2018-11-30

Two
type: MusicAlbum
date published: 2018-11-30

Something Real
type: MusicAlbum
date published: 2018-11-30

Something Real
type: MusicAlbum
date published: 2018-11-30

House of Cards
type: MusicAlbum
date published: 2024-09-13