Kamen
type: MusicGroup
description: Kamen, view to the town|thumb|right|255px Kamen () is a town in North Rhine-Westphalia, Germany, in the district Unna. Geography Kamen is situated at the east end of the Ruhr area, approximately 10 k
popularity: 20
followers: 714
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x17508ad29e3e64c33b45d4e649e1e6e64c367dd30b5a9b49e5f0719a0273efe4
additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSProofURL
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  value: https://artists.proofprofile.net/proofs/artist/913521bf-69f2-40b0-bab4-6a79b4de495a.ots
additional property: OTSRecordURL
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  value: https://artists.proofprofile.net/proofs/artist/913521bf-69f2-40b0-bab4-6a79b4de495a.json
additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSCanonicalRecord
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
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17508ad29e3e64c33b45d4e649e1e6e64c367dd30b5a9b49e5f0719a0273efe4. Chain 2 (Bitcoin): anchored in block 953727 (2026-06-15T02:33:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/913521bf-69f2-40b0-bab4-6a79b4de495a.json and https://artists.proofprofile.net/proofs/artist/913521bf-69f2-40b0-bab4-6a79b4de495a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T02:33:01Z
album: Rain
  type: MusicAlbum
  date published: 2017-11-20
album: Rain
  type: MusicAlbum
  date published: 2017-11-20
album: Snow
  type: MusicAlbum
  date published: 2018-01-20
album: Snow
  type: MusicAlbum
  date published: 2018-01-20
album: Bloom
  type: MusicAlbum
  date published: 2018-04-30
album: Bloom
  type: MusicAlbum
  date published: 2018-04-30
album: Heat
  type: MusicAlbum
  date published: 2018-09-03
album: Heat
  type: MusicAlbum
  date published: 2018-09-03
album: nuances
  type: MusicAlbum
  date published: 2021-07-08
album: Nuances (Saturated)
  type: MusicAlbum
  date published: 2022-01-28
album: NESHTATA SA PROSTI, VOL. 1
  type: MusicAlbum
  date published: 2022-03-18
album: Exit 96
  type: MusicAlbum
  date published: 2022-06-23
album: Drowsy
  type: MusicAlbum
  date published: 2022-06-23
album: Higher
  type: MusicAlbum
  date published: 2022-09-13
album: NESHTATA SA PROSTI VOL.2
  type: MusicAlbum
  date published: 2022-09-27
album: ПРИЗРАК
  type: MusicAlbum
  date published: 2022-12-02
album: Fraction 1
  type: MusicAlbum
  date published: 2023-03-06
album: Buried Emotions
  type: MusicAlbum
  date published: 2023-03-06
album: Take A Nap
  type: MusicAlbum
  date published: 2023-03-06
album: НАСЪН
  type: MusicAlbum
  date published: 2024-03-04
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    type: MusicRecording
    duration: PT2M44S
    duration ms: 164307
    explicit: false
    by artist: Kamen
    in album: НАСЪН
      type: MusicAlbum
      date published: 2024-03-04
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    additional property: CopyrightID
    additional property: CopyrightStatus
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    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US3DF2418251
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-03T19:59:51Z
    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 0xd59df786a95618b49b1da1ba824756fe9bcdc01831fc321b3797bd5831627bba. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/US3DF2418251.
      date published: 2026-07-03T19:59:51Z
    audio: НАСЪН
      type: AudioObject
      additional property: Tempo (BPM)
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      additional property: Musical Key
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      additional property: Mode (Major/Minor)
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      additional property: Time Signature
        type: PropertyValue
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      additional property: Danceability
        type: PropertyValue
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      additional property: Energy
        type: PropertyValue
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      additional property: Speechiness
        type: PropertyValue
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      additional property: Acousticness
        type: PropertyValue
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      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.213
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.273
      additional property: Loudness (dB)
        type: PropertyValue
        value: -9.047
      additional property: Key Name
        type: PropertyValue
        value: B
      additional property: Mode Name
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        value: Minor
  track: LALALA
    type: MusicRecording
    duration: PT2M26S
    duration ms: 146896
    explicit: false
    by artist: Kamen
    in album: НАСЪН
      type: MusicAlbum
      date published: 2024-03-04
    isrc code: US3DF2418256
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
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    additional property: OTSHash
    additional property: OTSBitcoinBlock
    additional property: OTSBitcoinBlockVerifyURL
    additional property: OTSVerificationAPI
    additional property: OTSTimestamp
    additional property: OTSVerifyInstructions
    subject of: OpenTimestamps Proof of Existence
    audio: LALALA
album: Completely in Love
album: Nasun (Remix)
album: green tea at 5am
album: 130
album: Един за друг

OTSBitcoinBlock
type: PropertyValue
value: 959100

OTSBitcoinBlockVerifyURL
type: PropertyValue
value: https://blockstream.info/api/block-height/959100

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US3DF2418256

OTSTimestamp
type: PropertyValue
value: 2026-07-22T05:29:55Z

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

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd8a2ce6d6c008ad687d078037dee1ed83dea2d38a76bece7593e22bed5b9c8a. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/US3DF2418256.
date published: 2026-07-22T05:29:55Z

LALALA
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 116.039
additional property: Musical Key
  type: PropertyValue
  value: 4
additional property: Mode (Major/Minor)
  type: PropertyValue
  value: 0
additional property: Time Signature
  type: PropertyValue
  value: 4
additional property: Danceability
  type: PropertyValue
  value: 0.935
additional property: Energy
  type: PropertyValue
  value: 0.598
additional property: Speechiness
  type: PropertyValue
  value: 0.267
additional property: Acousticness
  type: PropertyValue
  value: 0.015
additional property: Instrumentalness
  type: PropertyValue
  value: 0
additional property: Liveness
  type: PropertyValue
  value: 0.056
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.769
additional property: Loudness (dB)
  type: PropertyValue
  value: -7.417
additional property: Key Name
  type: PropertyValue
  value: E
additional property: Mode Name
  type: PropertyValue
  value: Minor

Completely in Love
type: MusicAlbum
date published: 2024-04-22

Nasun (Remix)
type: MusicAlbum
date published: 2024-08-01

green tea at 5am
type: MusicAlbum
date published: 2024-12-04

130
type: MusicAlbum
date published: 2024-12-19

Един за друг
type: MusicAlbum
date published: 2025-10-26