Hjalmar Borgstrøm
type: MusicGroup
description: Hjalmar Borgstrøm (; 23 March 1864 – 5 July 1925) was a Norwegian composer and music critic who played a prominent role in the musical life of his country in the first quarter of the 20th century.Guld
popularity: 2
followers: 137
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa64a88912ab5dee0dfd670c1a7f4a1ba30ba156fffbbaedd922a33b53f6dd857
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953871
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953871
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/078d1496-2e56-47fa-a83c-d1e30b2e9356.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/078d1496-2e56-47fa-a83c-d1e30b2e9356.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/078d1496-2e56-47fa-a83c-d1e30b2e9356
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T01:46:03Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xa64a88912ab5dee0dfd670c1a7f4a1ba30ba156fffbbaedd922a33b53f6dd857","name":"Hjalmar Borgstrøm","registered_at":"2026-06-15T16:09:18Z","symbol":"NIM0761070","token_address":"0x459f90425e77bf68ecc4ab0156a5e418291b2e81","type":"artist","uuid":"078d1496-2e56-47fa-a83c-d1e30b2e9356"}
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 0xa64a88912ab5dee0dfd670c1a7f4a1ba30ba156fffbbaedd922a33b53f6dd857. Chain 2 (Bitcoin): anchored in block 953877 (2026-06-16T02:39:16Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/078d1496-2e56-47fa-a83c-d1e30b2e9356.json and https://artists.proofprofile.net/proofs/artist/078d1496-2e56-47fa-a83c-d1e30b2e9356.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T02:39:16Z
  text: {"copyright_id":"0xa64a88912ab5dee0dfd670c1a7f4a1ba30ba156fffbbaedd922a33b53f6dd857","name":"Hjalmar Borgstrøm","registered_at":"2026-06-15T16:09:18Z","symbol":"NIM0761070","token_address":"0x459f90425e77bf68ecc4ab0156a5e418291b2e81","type":"artist","uuid":"078d1496-2e56-47fa-a83c-d1e30b2e9356"}
album: Hjalmar Borgstrøm; Thora Paa Rimol
  type: MusicAlbum
  date published: 2002-10-29