Necromass
type: MusicGroup
genre: black metal
popularity: 3
followers: 1409
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xeedcf8e487f7a33c3516068e97cd1e75af18a0edc766d8b8677ac7d48f547b5c
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954066
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954066
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/6e8dd97d-3b4d-41cb-b0d0-861cb470f242.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/6e8dd97d-3b4d-41cb-b0d0-861cb470f242.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/6e8dd97d-3b4d-41cb-b0d0-861cb470f242
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
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 0xeedcf8e487f7a33c3516068e97cd1e75af18a0edc766d8b8677ac7d48f547b5c. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6e8dd97d-3b4d-41cb-b0d0-861cb470f242.json and https://artists.proofprofile.net/proofs/artist/6e8dd97d-3b4d-41cb-b0d0-861cb470f242.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
album: Mysteria Mystica Zothyriana
  type: MusicAlbum
  date published: 1994-11-01
album: Abyss Calls Life
  type: MusicAlbum
  date published: 1996-04-04
album: Calix. Utero. Babalon.
  type: MusicAlbum
  date published: 2013-07-20
album: Calix. Utero. Babalon.
  type: MusicAlbum
  date published: 2013-07-20
album: Ordo. Equilibrium. Nox.
  type: MusicAlbum
  date published: 2015-11-21
album: Across the Veil of the Past
  type: MusicAlbum
  date published: 2025-07-29