Gemma Hasson
type: MusicGroup
genre: celtic
description: Gemma Hasson is a Northern Irish folk singer that recorded three studio albums from 1974 to 1978. Her first one, Introducing Ireland's Gemma Hasson was released in 1974 on Dolphin Records label and pr
popularity: 2
followers: 69
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x309cc3b7721b7aea77f499582c81996ea6419504a6ba15e7dc3e08c596580f2a
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953864
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953864
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/03f2ea6c-36c9-4dc8-bf42-28f50487e2d7.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/03f2ea6c-36c9-4dc8-bf42-28f50487e2d7.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/03f2ea6c-36c9-4dc8-bf42-28f50487e2d7
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T00:30:31Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x309cc3b7721b7aea77f499582c81996ea6419504a6ba15e7dc3e08c596580f2a","name":"Gemma Hasson","registered_at":"2026-06-15T15:06:49Z","symbol":"NIM0746153","token_address":"0x2a4ee46d8ef9ab4a85a3882313e64a6510c5719f","type":"artist","uuid":"03f2ea6c-36c9-4dc8-bf42-28f50487e2d7"}
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 0x309cc3b7721b7aea77f499582c81996ea6419504a6ba15e7dc3e08c596580f2a. Chain 2 (Bitcoin): anchored in block 953864 (2026-06-16T00:30:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/03f2ea6c-36c9-4dc8-bf42-28f50487e2d7.json and https://artists.proofprofile.net/proofs/artist/03f2ea6c-36c9-4dc8-bf42-28f50487e2d7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T00:30:31Z
  text: {"copyright_id":"0x309cc3b7721b7aea77f499582c81996ea6419504a6ba15e7dc3e08c596580f2a","name":"Gemma Hasson","registered_at":"2026-06-15T15:06:49Z","symbol":"NIM0746153","token_address":"0x2a4ee46d8ef9ab4a85a3882313e64a6510c5719f","type":"artist","uuid":"03f2ea6c-36c9-4dc8-bf42-28f50487e2d7"}
album: Le chant profond de l'Irlande
  type: MusicAlbum
  date published: 1990