Paul Walden
type: MusicGroup
description: Paul Walden (; ; ; 26 July 1863 – 22 January 1957) was a Latvian-Baltic German chemist known for his work in stereochemistry and history of chemistry. In particular, he discovered Walden's rule,Paul W
popularity: 2
followers: 137
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xf625a9a9dc621afa9577b806f4cd4547401c9b8b9a146f66896e573159d989b8
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954342
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954342
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/87ccac2f-2579-426d-800c-9bbcda6fd011.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/87ccac2f-2579-426d-800c-9bbcda6fd011.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/87ccac2f-2579-426d-800c-9bbcda6fd011
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:22:39Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xf625a9a9dc621afa9577b806f4cd4547401c9b8b9a146f66896e573159d989b8","name":"Paul Walden","registered_at":"2026-06-17T12:48:37Z","symbol":"NIM1400316","token_address":"0x8366ad37fdd947740044a1996df39204c7add755","type":"artist","uuid":"87ccac2f-2579-426d-800c-9bbcda6fd011"}
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
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf625a9a9dc621afa9577b806f4cd4547401c9b8b9a146f66896e573159d989b8. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/87ccac2f-2579-426d-800c-9bbcda6fd011.json and https://artists.proofprofile.net/proofs/artist/87ccac2f-2579-426d-800c-9bbcda6fd011.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:22:39Z
  text: {"copyright_id":"0xf625a9a9dc621afa9577b806f4cd4547401c9b8b9a146f66896e573159d989b8","name":"Paul Walden","registered_at":"2026-06-17T12:48:37Z","symbol":"NIM1400316","token_address":"0x8366ad37fdd947740044a1996df39204c7add755","type":"artist","uuid":"87ccac2f-2579-426d-800c-9bbcda6fd011"}
album: Nature's Lullaby
  type: MusicAlbum
  date published: 1959
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  type: MusicAlbum
  date published: 1963
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  type: MusicAlbum
  date published: 1964
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  type: MusicAlbum
  date published: 1965
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  date published: 1966
album: Infinity
  type: MusicAlbum
  date published: 1989-02-18