Cathal Coughlan
type: MusicGroup
genre: baroque pop
genre: chamber pop
description: Cathal Coughlan may refer to: Cathal Coughlan (politician) (1937–1986), Irish Fianna Fáil politician Cathal Coughlan (musician) (1960–2022), Irish singer songwriter
popularity: 7
followers: 2202
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x21c0d292b869b6e7b2b0d811b1e4950dc9367f371d51e9e5d1129924e99ba163
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954587
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954587
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b87578ae-7728-496d-96f6-440ceffec6f1.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b87578ae-7728-496d-96f6-440ceffec6f1.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/b87578ae-7728-496d-96f6-440ceffec6f1
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T19:10:41Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x21c0d292b869b6e7b2b0d811b1e4950dc9367f371d51e9e5d1129924e99ba163","name":"Cathal Coughlan","registered_at":"2026-06-20T15:52:09Z","symbol":"NIM1647623","token_address":"0x0b3ff9386e5322fc0c5c7b2f70bd40d5e4002919","type":"artist","uuid":"b87578ae-7728-496d-96f6-440ceffec6f1"}
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 0x21c0d292b869b6e7b2b0d811b1e4950dc9367f371d51e9e5d1129924e99ba163. Chain 2 (Bitcoin): anchored in block 954588 (2026-06-20T19:15:05Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b87578ae-7728-496d-96f6-440ceffec6f1.json and https://artists.proofprofile.net/proofs/artist/b87578ae-7728-496d-96f6-440ceffec6f1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T19:15:05Z
  text: {"copyright_id":"0x21c0d292b869b6e7b2b0d811b1e4950dc9367f371d51e9e5d1129924e99ba163","name":"Cathal Coughlan","registered_at":"2026-06-20T15:52:09Z","symbol":"NIM1647623","token_address":"0x0b3ff9386e5322fc0c5c7b2f70bd40d5e4002919","type":"artist","uuid":"b87578ae-7728-496d-96f6-440ceffec6f1"}
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