Mr. Semmelman
type: MusicGroup
popularity: 7
followers: 2571
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd8538d2878c18a8d53df280d8475b64de6a343ef43b3b041fc6d70291d9f4a0a
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954667
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954667
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/bebf0ddc-f61b-47fc-9ec1-a41f8c33d5cf.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/bebf0ddc-f61b-47fc-9ec1-a41f8c33d5cf.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/bebf0ddc-f61b-47fc-9ec1-a41f8c33d5cf
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T07:29:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xd8538d2878c18a8d53df280d8475b64de6a343ef43b3b041fc6d70291d9f4a0a","name":"Mr. Semmelman","registered_at":"2026-06-20T18:52:21Z","symbol":"NIM1683589","token_address":"0xae60185491e99ef1a3a6be3da226981f2d1bc171","type":"artist","uuid":"bebf0ddc-f61b-47fc-9ec1-a41f8c33d5cf"}
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 0xd8538d2878c18a8d53df280d8475b64de6a343ef43b3b041fc6d70291d9f4a0a. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bebf0ddc-f61b-47fc-9ec1-a41f8c33d5cf.json and https://artists.proofprofile.net/proofs/artist/bebf0ddc-f61b-47fc-9ec1-a41f8c33d5cf.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T07:29:20Z
  text: {"copyright_id":"0xd8538d2878c18a8d53df280d8475b64de6a343ef43b3b041fc6d70291d9f4a0a","name":"Mr. Semmelman","registered_at":"2026-06-20T18:52:21Z","symbol":"NIM1683589","token_address":"0xae60185491e99ef1a3a6be3da226981f2d1bc171","type":"artist","uuid":"bebf0ddc-f61b-47fc-9ec1-a41f8c33d5cf"}
album: Semmelmans tema
  type: MusicAlbum
  date published: 2016-10-26
album: Semmelmans Tema
  type: MusicAlbum
  date published: 2017-02-03
album: The Last Day of February (Radio Edit)
  type: MusicAlbum
  date published: 2018-05-18
album: The Last Day of February (Radio edit)
  type: MusicAlbum
  date published: 2018-05-18
album: Famous
  type: MusicAlbum
  date published: 2019-05-24
album: Famous (Radio edit)
  type: MusicAlbum
  date published: 2019-06-14
album: Famous (Radio edit)
  type: MusicAlbum
  date published: 2019-06-14
album: Famous (Radio Edit)
  type: MusicAlbum
  date published: 2019-06-14
album: Famous (Remix)
  type: MusicAlbum
  date published: 2019-10-30
album: Famous (Remix)
  type: MusicAlbum
  date published: 2019-10-30
album: Famous (House Remix)
  type: MusicAlbum
  date published: 2020-10-16
album: Famous (House Remix)
  type: MusicAlbum
  date published: 2020-10-16
album: Matters of the Heart
  type: MusicAlbum
  date published: 2021-03-14
album: Matters of the Heart
  type: MusicAlbum
  date published: 2021-03-14
album: Rainbow in the Dark (Radio Edit)
  type: MusicAlbum
  date published: 2021-05-14
album: Rainbow in the Dark (Radio Edit)
  type: MusicAlbum
  date published: 2021-05-14
album: Rainbow in the Dark (Extended Version)
  type: MusicAlbum
  date published: 2021-06-04
album: Rainbow In The Dark
  type: MusicAlbum
  date published: 2021-06-04
album: Axel F
  type: MusicAlbum
  date published: 2022-06-10
  track: Axel F
    type: MusicRecording
    duration: PT3M26S
    duration ms: 206400
    explicit: false
    by artist: Mr. Semmelman
    in album: Axel F
      type: MusicAlbum
      date published: 2022-06-10
    isrc code: QZK6P2202635
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-15T15:54:50+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x67112b56cc95d854ebe9841a51b5ba11c917f831bcf8aef2a39589e5b5456a4e
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958169
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958169
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6P2202635
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-15T16:16:18Z
    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 0x67112b56cc95d854ebe9841a51b5ba11c917f831bcf8aef2a39589e5b5456a4e. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/QZK6P2202635.
      date published: 2026-07-15T16:16:18Z
    audio: Axel F
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 124.966
      additional property: Musical Key
        type: PropertyValue
        value: 9
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.698
      additional property: Energy
        type: PropertyValue
        value: 0.893
      additional property: Speechiness
        type: PropertyValue
        value: 0.034
      additional property: Acousticness
        type: PropertyValue
        value: 0.02
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.835
      additional property: Liveness
        type: PropertyValue
        value: 0.205
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.705
      additional property: Loudness (dB)
        type: PropertyValue
        value: -6.807
      additional property: Key Name
        type: PropertyValue
        value: A
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Matters Of The Heart (New Version)
  type: MusicAlbum
  date published: 2022-09-16
album: Only One Wish
  type: MusicAlbum
  date published: 2022-11-24
album: Semmelmans Tema (Remix)
  type: MusicAlbum
  date published: 2023-02-11
album: Island Life
  type: MusicAlbum
  date published: 2023-08-25
album: Only One Wish (Christmas 2023 version)
  type: MusicAlbum
  date published: 2023-11-08