Iris Kroes
type: MusicGroup
description: Iris Kroes (born 11 November 1992 in Drachten) is a Dutch singer-songwriter and harpist (She was called Harpmeisje (Dutch for Harp Girl)). She was the winner of the second season of the television pro
popularity: 10
followers: 3039
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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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
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63bc867c01de61894e8484176e756a6e6336dd816b18b7520467f930ba7f0e7e. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/35b9231f-5350-4a32-843d-f6c7f58fa590.json and https://artists.proofprofile.net/proofs/artist/35b9231f-5350-4a32-843d-f6c7f58fa590.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
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album: I Can't Make You Love Me
  type: MusicAlbum
  date published: 2012-01-14
album: Just More
  type: MusicAlbum
  date published: 2012-02-24
album: Throw In Tomorrow
  type: MusicAlbum
  date published: 2012-08-03
album: Throw in Tomorrow
  type: MusicAlbum
  date published: 2012-08-03
album: First
  type: MusicAlbum
  date published: 2012-08-24
album: First
  type: MusicAlbum
  date published: 2012-08-24
  track: Nothing Else Matters
    type: MusicRecording
    duration: PT2M54S
    duration ms: 174886
    explicit: false
    by artist: Iris Kroes
    in album: First
      type: MusicAlbum
      date published: 2012-08-24
    isrc code: NLZ291200142
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    additional property: CopyrightStatus
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    additional property: OTSVerificationAPI
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    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
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10f1cc76e41fbb715797da05d42f24e05bb843140daec5d21c9a4a39e8b75ae4. 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/NLZ291200142.
      date published: 2026-07-06T01:25:57Z
    audio: Nothing Else Matters
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 143.186
      additional property: Musical Key
        type: PropertyValue
        value: 4
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 3
      additional property: Danceability
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      additional property: Energy
        type: PropertyValue
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      additional property: Speechiness
        type: PropertyValue
        value: 0.038
      additional property: Acousticness
        type: PropertyValue
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      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.082
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.134
      additional property: Loudness (dB)
        type: PropertyValue
        value: -9.277
      additional property: Key Name
        type: PropertyValue
        value: E
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: First
  type: MusicAlbum
  date published: 2012-08-24
album: Thús
  type: MusicAlbum
  date published: 2013-01-23
album: Thús
  type: MusicAlbum
  date published: 2013-01-23
album: Never Coming Back
  type: MusicAlbum
  date published: 2014-01-15
album: It Will Come in Time
  type: MusicAlbum
  date published: 2014-03-07
album: Christmas Feelings
  type: MusicAlbum
  date published: 2015-11-11
album: Out Of My League
  type: MusicAlbum
  date published: 2016-04-21
album: Surrounded by Water
  type: MusicAlbum
  date published: 2017-11-30
album: Go For Gold
  type: MusicAlbum
  date published: 2018-02-16
album: Fjoer yn mij
  type: MusicAlbum
  date published: 2018-05-04
album: Moving On Out
  type: MusicAlbum
  date published: 2018-08-24
album: The Most
  type: MusicAlbum
  date published: 2019-06-21
album: Stone Cold Heart
  type: MusicAlbum
  date published: 2019-09-13
album: No Fire
  type: MusicAlbum
  date published: 2019-11-06
album: Brighter Day (8d Audio)
  type: MusicAlbum
  date published: 2020-04-03
  track: Brighter Day (8d Audio)
    type: MusicRecording
    duration: PT2M37S
    duration ms: 157500
    explicit: false
    by artist: Iris Kroes
    in album: Brighter Day (8d Audio)
      type: MusicAlbum
      date published: 2020-04-03
    isrc code: NLM2M2000001
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
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    additional property: OTSBitcoinBlock
    additional property: OTSBitcoinBlockVerifyURL
    additional property: OTSVerificationAPI
    additional property: OTSTimestamp
    additional property: OTSVerifyInstructions
    subject of: OpenTimestamps Proof of Existence
    audio: Brighter Day (8d Audio)
album: Brighter Day (Radio Edit)
album: dare to be you
album: The lost sea
album: And I Love You So
album: Believe (Better Than Ever / Aflevering 4 / Live)
album: Believe
album: Songbird
album: Kroes door het leven
album: Shiplife

CopyrightChainExplorerURL
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value: https://explorer.copyrightchains.com/tx/0xeb417036a8d6fd0feebf53564474a49fd9c3397779cb8ecf71594657be677b34

OTSHash
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OTSBitcoinBlock
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value: 956728

OTSBitcoinBlockVerifyURL
type: PropertyValue
value: https://blockstream.info/api/block-height/956728

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLM2M2000001

OTSTimestamp
type: PropertyValue
value: 2026-07-05T01:43:49Z

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

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb417036a8d6fd0feebf53564474a49fd9c3397779cb8ecf71594657be677b34. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/NLM2M2000001.
date published: 2026-07-05T01:43:49Z

Brighter Day (8d Audio)
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 128.019
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: 0.416
additional property: Energy
  type: PropertyValue
  value: 0.362
additional property: Speechiness
  type: PropertyValue
  value: 0.034
additional property: Acousticness
  type: PropertyValue
  value: 0.73
additional property: Instrumentalness
  type: PropertyValue
  value: 0.353
additional property: Liveness
  type: PropertyValue
  value: 0.112
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.036
additional property: Loudness (dB)
  type: PropertyValue
  value: -11.111
additional property: Key Name
  type: PropertyValue
  value: A
additional property: Mode Name
  type: PropertyValue
  value: Major

Brighter Day (Radio Edit)
type: MusicAlbum
date published: 2020-04-17

dare to be you
type: MusicAlbum
date published: 2020-12-04

The lost sea
type: MusicAlbum
date published: 2021-03-19

And I Love You So
type: MusicAlbum
date published: 2022-01-07

Believe (Better Than Ever / Aflevering 4 / Live)
type: MusicAlbum
date published: 2022-01-22

Believe
type: MusicAlbum
date published: 2022-02-04

Songbird
type: MusicAlbum
date published: 2022-04-08

Kroes door het leven
type: MusicAlbum
date published: 2022-11-11

Kroes door het leven
type: MusicAlbum
date published: 2023-04-14

Shiplife
type: MusicAlbum
date published: 2025-06-27
track: Shiplife
  type: MusicRecording
  duration: PT2M4S
  duration ms: 124800
  explicit: false
  by artist: Iris Kroes
  in album: Shiplife
    type: MusicAlbum
    date published: 2025-06-27
  isrc code: QZRP52564734
  additional property: CopyrightID
  additional property: CopyrightStatus
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    value: registered
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    value: https://blockstream.info/api/block-height/956725
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZRP52564734
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-05T01:12:41Z
  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
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa83ff0cc74e7472d3ccf864237abbdd0aa60cd4aaa837a9c07d8bd1db4c0f5d6. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZRP52564734.
    date published: 2026-07-05T01:12:41Z
  audio: Shiplife
    type: AudioObject
    additional property: Tempo (BPM)
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      value: 100.096
    additional property: Musical Key
      type: PropertyValue
      value: 2
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.754
    additional property: Energy
      type: PropertyValue
      value: 0.629
    additional property: Speechiness
      type: PropertyValue
      value: 0.043
    additional property: Acousticness
      type: PropertyValue
      value: 0.356
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.269
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.74
    additional property: Loudness (dB)
      type: PropertyValue
      value: -6.457
    additional property: Key Name
      type: PropertyValue
      value: D
    additional property: Mode Name
      type: PropertyValue
      value: Major