Mason
type: MusicGroup
genre: groove metal
genre: speed metal
genre: thrash metal
description: Mason or Masons may refer to: Occupations Mason, brick mason, or bricklayer, a worker who lays bricks Stone mason, a craftsman in the stone-cutting and shaping industry People and fictional chara
popularity: 4
followers: 1953
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x98cd860b19cd66897838bd2d7902167c30db5ae201b87778c2e16b53f27f2b86
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954342
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954342
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/894a793c-8d2c-4848-9562-2602450eb326.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/894a793c-8d2c-4848-9562-2602450eb326.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/894a793c-8d2c-4848-9562-2602450eb326
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:22:39Z
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98cd860b19cd66897838bd2d7902167c30db5ae201b87778c2e16b53f27f2b86. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/894a793c-8d2c-4848-9562-2602450eb326.json and https://artists.proofprofile.net/proofs/artist/894a793c-8d2c-4848-9562-2602450eb326.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:22:39Z
album: Warhead
  type: MusicAlbum
  date published: 2013-08-16
album: Warhead
  type: MusicAlbum
  date published: 2013-12-12
album: Unmerciful
  type: MusicAlbum
  date published: 2016-01-08
album: Impervious
  type: MusicAlbum
  date published: 2017-10-06
album: Martyr
  type: MusicAlbum
  date published: 2023-10-06
album: Martyr
  type: MusicAlbum
  date published: 2025-08-29
album: Distrust
  type: MusicAlbum
  date published: 2025-09-30
album: Shadow
  type: MusicAlbum
  date published: 2025-10-17
album: Martyr
  type: MusicAlbum
  date published: 2025-10-24