Henrik Wallgren
type: MusicGroup
genre: swedish ballads
popularity: 5
followers: 256
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd76575871e50cab85973ed82ec48e8d5af185e647be13ca7456bd15a48e67efa
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/ba798c4c-da7f-443a-b3ba-4cfb577b18b8.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ba798c4c-da7f-443a-b3ba-4cfb577b18b8.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/ba798c4c-da7f-443a-b3ba-4cfb577b18b8
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T07:29:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xd76575871e50cab85973ed82ec48e8d5af185e647be13ca7456bd15a48e67efa","name":"Henrik Wallgren","registered_at":"2026-06-20T16:49:31Z","symbol":"NIM1657152","token_address":"0x8bbb0d34f5f59c6077fec2e585719c2ba9d8cab5","type":"artist","uuid":"ba798c4c-da7f-443a-b3ba-4cfb577b18b8"}
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 0xd76575871e50cab85973ed82ec48e8d5af185e647be13ca7456bd15a48e67efa. 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/ba798c4c-da7f-443a-b3ba-4cfb577b18b8.json and https://artists.proofprofile.net/proofs/artist/ba798c4c-da7f-443a-b3ba-4cfb577b18b8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T07:29:20Z
  text: {"copyright_id":"0xd76575871e50cab85973ed82ec48e8d5af185e647be13ca7456bd15a48e67efa","name":"Henrik Wallgren","registered_at":"2026-06-20T16:49:31Z","symbol":"NIM1657152","token_address":"0x8bbb0d34f5f59c6077fec2e585719c2ba9d8cab5","type":"artist","uuid":"ba798c4c-da7f-443a-b3ba-4cfb577b18b8"}
album: Gå Förbi
  type: MusicAlbum
  date published: 1996-09-05
album: Gå Förbi
  type: MusicAlbum
  date published: 1996-09-05
album: Slarver
  type: MusicAlbum
  date published: 2003-02-06
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  type: MusicAlbum
  date published: 2003-02-06
album: Vår Stad
  type: MusicAlbum
  date published: 2011
album: Vår Stad
  type: MusicAlbum
  date published: 2011-02-11
album: Henrik Wallgren - EP
  type: MusicAlbum
  date published: 2012-05-13
album: Henrik Wallgren EP
  type: MusicAlbum
  date published: 2012-05-13
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  date published: 2017-01-25
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