Sulphur
type: MusicGroup
genre: black metal
genre: death metal
popularity: 2
followers: 1480
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x6d4b16a2e59b38f4c0ef6e16a7efb107897fbb68e9ee79fbeec6e49d85f754e9
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954346
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954346
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/986184e5-4f56-4dfc-852e-8ed07b2531e8.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/986184e5-4f56-4dfc-852e-8ed07b2531e8.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/986184e5-4f56-4dfc-852e-8ed07b2531e8
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:51:26Z
additional property: OTSCanonicalRecord
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 0x6d4b16a2e59b38f4c0ef6e16a7efb107897fbb68e9ee79fbeec6e49d85f754e9. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/986184e5-4f56-4dfc-852e-8ed07b2531e8.json and https://artists.proofprofile.net/proofs/artist/986184e5-4f56-4dfc-852e-8ed07b2531e8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:51:26Z
album: Cursed Madness
  type: MusicAlbum
  date published: 2007-06-01
album: Outburst Of Desecration
  type: MusicAlbum
  date published: 2008-11-25
album: Thorns in Existence
  type: MusicAlbum
  date published: 2009
album: Thorns in Existence
  type: MusicAlbum
  date published: 2009-11-09
album: Thorns In Existence
  type: MusicAlbum
  date published: 2009-11-09
album: Omens of Doom
  type: MusicAlbum
  date published: 2016-03-11
album: Omens of Doom
  type: MusicAlbum
  date published: 2016-03-11
album: Omens of Doom
  type: MusicAlbum
  date published: 2016-03-11
album: Omens of Doom
  type: MusicAlbum
  date published: 2016-04-15