Adrianus Valerius
type: MusicGroup
description: Adrianus Valerius, also known as Adriaen Valerius, (c. 1575 – 1625) was a Dutch poet and composer, known mostly for his poems dealing with peasant and burgher life and those dealing with the Dutch War
popularity: 5
followers: 108
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additional property: OTSVerifyInstructions
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  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 0xcdbee5988b1553a6b26ecb941bc28e86bdf036a876203393f37b77526be35db9. 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/622955f1-34db-478e-9ca6-28e2069f2dd1.json and https://artists.proofprofile.net/proofs/artist/622955f1-34db-478e-9ca6-28e2069f2dd1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
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album: Dutch Anthem (English Version)
  type: MusicAlbum
  date published: 2022-06-16
track: La Boree
track: National Anthem of Kingdom of the Netherlands
track: Wilhelmus (Netherlands)

La Boree
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duration: PT1M48S
duration ms: 108266
explicit: false
by artist: Adrianus Valerius
by artist: Lena Hellström-Färnlöf
by artist: Westra Aros Pipers
by artist: Bourrasque Ensemble
by artist: Bertil Färnlof
in album: Praetorius: Dances From Terpsichore
  type: MusicAlbum
  date published: 1998-10-13
isrc code: HKI199809213
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additional property: OTSTimestamp
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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
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subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4925210bc86af6ad55d07cafc4f18a25aa0ae8fbde3666fd880ca8e119a357e. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/HKI199809213.
  date published: 2026-07-02T03:55:08Z
audio: La Boree
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  additional property: Danceability
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  additional property: Energy
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  additional property: Speechiness
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  additional property: Acousticness
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  additional property: Instrumentalness
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  additional property: Valence (Positivity)
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  additional property: Loudness (dB)
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National Anthem of Kingdom of the Netherlands
type: MusicRecording
duration: PT1M3S
duration ms: 63800
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by artist: Adrianus Valerius
by artist: Prague Radio Symphony Orchestra
by artist: Jan Kučera
in album: National Anthems of Member States of the European Union
  type: MusicAlbum
  date published: 2009-04-24
isrc code: CZD940900025
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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  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
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T05:09:12Z
audio: National Anthem of Kingdom of the Netherlands
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Wilhelmus (Netherlands)
type: MusicRecording
duration: PT1M43S
duration ms: 103426
explicit: false
by artist: Anonymous
by artist: Adrianus Valerius
by artist: Walther Boer
by artist: Tapiola Choir
by artist: Karelia Brass
by artist: Kari Ala-Pöllanen
in album: National Anthems Of The Eu Countries In The Original Languages
  type: MusicAlbum
  date published: 2000-01-01
popularity: 6
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f9f35eb67ed056b38dd3f6608df94f88b47fc3210e574def174b0ed8fb6991c. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/FINDE9900092.
  date published: 2026-07-29T19:35:34Z
audio: Wilhelmus (Netherlands)
  type: AudioObject
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additional property: OTSVerifyInstructions
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  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