Siege Column
type: MusicGroup
genre: black metal
genre: death metal
popularity: 5
followers: 2413
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc5eb1dfea76e97f84c46128a68949a9ee461529b07eebe4cbd4e9b2db5dac33b
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/76c7a4f1-5c54-4417-bec2-ce9ed1c82330.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/76c7a4f1-5c54-4417-bec2-ce9ed1c82330.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/76c7a4f1-5c54-4417-bec2-ce9ed1c82330
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xc5eb1dfea76e97f84c46128a68949a9ee461529b07eebe4cbd4e9b2db5dac33b","name":"Siege Column","registered_at":"2026-06-17T07:01:48Z","symbol":"NIM1317717","token_address":"0x7e6a0dfc643ee3723d8a559a8837593e22d2dc44","type":"artist","uuid":"76c7a4f1-5c54-4417-bec2-ce9ed1c82330"}
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 0xc5eb1dfea76e97f84c46128a68949a9ee461529b07eebe4cbd4e9b2db5dac33b. 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/76c7a4f1-5c54-4417-bec2-ce9ed1c82330.json and https://artists.proofprofile.net/proofs/artist/76c7a4f1-5c54-4417-bec2-ce9ed1c82330.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0xc5eb1dfea76e97f84c46128a68949a9ee461529b07eebe4cbd4e9b2db5dac33b","name":"Siege Column","registered_at":"2026-06-17T07:01:48Z","symbol":"NIM1317717","token_address":"0x7e6a0dfc643ee3723d8a559a8837593e22d2dc44","type":"artist","uuid":"76c7a4f1-5c54-4417-bec2-ce9ed1c82330"}
album: Nocturnal Attack Formation
  type: MusicAlbum
  date published: 2016-01-03
album: Secret Forces of the Pentagram
  type: MusicAlbum
  date published: 2016-08-23
album: Inferno Deathpassion
  type: MusicAlbum
  date published: 2018-08-16
album: Split With Evil
  type: MusicAlbum
  date published: 2019-07-28
album: Darkside Legions
  type: MusicAlbum
  date published: 2020-08-14
album: SULPHUR OMEGA
  type: MusicAlbum
  date published: 2025-09-09