Alf Hulbækmo
type: MusicGroup
description: Alf Hulbækmo (born 17 March 1992) is a Norwegian award winning musician (piano, keyboards, harmonica, saxophone, and vocals) and composer, son of the traditional folk musicians Tone Hulbækmo and Hans
popularity: 2
followers: 13
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd2459de9867eab18af56f772f9b62e78408809932e39b812b9129f4417e119f5
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953997
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953997
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/28c2f376-6fb0-497e-b3e6-58a9e347780d.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/28c2f376-6fb0-497e-b3e6-58a9e347780d.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/28c2f376-6fb0-497e-b3e6-58a9e347780d
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T20:07:57Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xd2459de9867eab18af56f772f9b62e78408809932e39b812b9129f4417e119f5","name":"Alf Hulbækmo","registered_at":"2026-06-16T03:41:10Z","symbol":"NIM0926187","token_address":"0xd1db25d4e406b65ded41c27e69f6c896872769a5","type":"artist","uuid":"28c2f376-6fb0-497e-b3e6-58a9e347780d"}
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 0xd2459de9867eab18af56f772f9b62e78408809932e39b812b9129f4417e119f5. Chain 2 (Bitcoin): anchored in block 953997 (2026-06-16T20:07:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/28c2f376-6fb0-497e-b3e6-58a9e347780d.json and https://artists.proofprofile.net/proofs/artist/28c2f376-6fb0-497e-b3e6-58a9e347780d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T20:07:57Z
  text: {"copyright_id":"0xd2459de9867eab18af56f772f9b62e78408809932e39b812b9129f4417e119f5","name":"Alf Hulbækmo","registered_at":"2026-06-16T03:41:10Z","symbol":"NIM0926187","token_address":"0xd1db25d4e406b65ded41c27e69f6c896872769a5","type":"artist","uuid":"28c2f376-6fb0-497e-b3e6-58a9e347780d"}