Mads Langelund
type: MusicGroup
popularity: 6
followers: 655
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x5733915200a455a4bc7dab238a9cc4caf21eb1ba6385adc2d75bff07f189e880
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954513
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954513
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9f441d37-dbb8-4551-9020-b48d4ec116c5.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9f441d37-dbb8-4551-9020-b48d4ec116c5.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/9f441d37-dbb8-4551-9020-b48d4ec116c5
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T06:31:18Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x5733915200a455a4bc7dab238a9cc4caf21eb1ba6385adc2d75bff07f189e880","name":"Mads Langelund","registered_at":"2026-06-20T04:46:21Z","symbol":"NIM1519995","token_address":"0xd87108d8c4ec023916340faa784752da28e9e2db","type":"artist","uuid":"9f441d37-dbb8-4551-9020-b48d4ec116c5"}
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 0x5733915200a455a4bc7dab238a9cc4caf21eb1ba6385adc2d75bff07f189e880. Chain 2 (Bitcoin): anchored in block 954513 (2026-06-20T06:31:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9f441d37-dbb8-4551-9020-b48d4ec116c5.json and https://artists.proofprofile.net/proofs/artist/9f441d37-dbb8-4551-9020-b48d4ec116c5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T06:31:18Z
  text: {"copyright_id":"0x5733915200a455a4bc7dab238a9cc4caf21eb1ba6385adc2d75bff07f189e880","name":"Mads Langelund","registered_at":"2026-06-20T04:46:21Z","symbol":"NIM1519995","token_address":"0xd87108d8c4ec023916340faa784752da28e9e2db","type":"artist","uuid":"9f441d37-dbb8-4551-9020-b48d4ec116c5"}
album: Fool's Paradise
  type: MusicAlbum
  date published: 2018-02-09
album: Marco Polo
  type: MusicAlbum
  date published: 2018-09-14
album: Hånd i Hånd
  type: MusicAlbum
  date published: 2019-07-19
album: Uovervindelig
  type: MusicAlbum
  date published: 2019-09-06
album: Panorama
  type: MusicAlbum
  date published: 2019-10-25
album: Rampelys
  type: MusicAlbum
  date published: 2019-11-15
album: Coming Home
  type: MusicAlbum
  date published: 2019-12-06
album: Never Coming Back
  type: MusicAlbum
  date published: 2020-08-21
album: Howling For You
  type: MusicAlbum
  date published: 2021-02-05
album: To Be Alive
  type: MusicAlbum
  date published: 2021-04-23
album: Paper Plane
  type: MusicAlbum
  date published: 2022-09-14
album: Journals
  type: MusicAlbum
  date published: 2023-04-07
  track: Paper Plane
    type: MusicRecording
    duration: PT3M13S
    duration ms: 193471
    explicit: false
    by artist: Mads Langelund
    in album: Journals
      type: MusicAlbum
      date published: 2023-04-07
    isrc code: DKZ582202100
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-22T01:03:41+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xd2bd76ff5a863354ab7c7fb7d63d61b1c2308f751a464914756ea3027b852f90
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 959087
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/959087
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DKZ582202100
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-22T02:05:55Z
    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 0xd2bd76ff5a863354ab7c7fb7d63d61b1c2308f751a464914756ea3027b852f90. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/DKZ582202100.
      date published: 2026-07-22T02:05:55Z
    audio: Paper Plane
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 78.541
      additional property: Musical Key
        type: PropertyValue
        value: 1
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.493
      additional property: Energy
        type: PropertyValue
        value: 0.685
      additional property: Speechiness
        type: PropertyValue
        value: 0.031
      additional property: Acousticness
        type: PropertyValue
        value: 0.079
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.156
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.62
      additional property: Loudness (dB)
        type: PropertyValue
        value: -5.092
      additional property: Key Name
        type: PropertyValue
        value: C#
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Adore (Live from Trøjborg Castle Ruin)
  type: MusicAlbum
  date published: 2024-11-01
album: Ikk' Hæng Ved Det Der' Sagt Og Gjort
  type: MusicAlbum
  date published: 2025-02-28
album: Nar
  type: MusicAlbum
  date published: 2025-03-28
  track: Nar
    type: MusicRecording
    duration: PT3M22S
    duration ms: 202647
    explicit: false
    by artist: Mads Langelund
    in album: Nar
      type: MusicAlbum
      date published: 2025-03-28
    isrc code: DKZ582500307
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-18T21:43:47+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x9be9e3bbfad6a69421943ea749aab7f296fe0f4f169eaf6c57d872c321f4573e
    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/DKZ582500307
    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
    audio: Nar
album: Gravhund
album: Lev Momentet - Liv Til Låns
album: Go' Nok

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9be9e3bbfad6a69421943ea749aab7f296fe0f4f169eaf6c57d872c321f4573e. 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/DKZ582500307.
date published: 2026-07-18T22:59:44Z

Nar
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 102.01
additional property: Musical Key
  type: PropertyValue
  value: 7
additional property: Mode (Major/Minor)
  type: PropertyValue
  value: 0
additional property: Time Signature
  type: PropertyValue
  value: 4
additional property: Danceability
  type: PropertyValue
  value: 0.645
additional property: Energy
  type: PropertyValue
  value: 0.461
additional property: Speechiness
  type: PropertyValue
  value: 0.036
additional property: Acousticness
  type: PropertyValue
  value: 0.454
additional property: Instrumentalness
  type: PropertyValue
  value: 0
additional property: Liveness
  type: PropertyValue
  value: 0.08
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.629
additional property: Loudness (dB)
  type: PropertyValue
  value: -10.883
additional property: Key Name
  type: PropertyValue
  value: G
additional property: Mode Name
  type: PropertyValue
  value: Minor

Gravhund
type: MusicAlbum
date published: 2025-04-11

Lev Momentet - Liv Til Låns
type: MusicAlbum
date published: 2025-04-25

Go' Nok
type: MusicAlbum
date published: 2025-08-22