SIKASA
type: MusicGroup
genre: progressive metal
genre: sludge metal
popularity: 2
followers: 417
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x065ef6160934983bb23265b9d9dadb16a62fd6ceca33144a96747d6ed9443ba0
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954717
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954717
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f5404e85-3dbf-4c6c-8d60-a87753edbf48.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f5404e85-3dbf-4c6c-8d60-a87753edbf48.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/f5404e85-3dbf-4c6c-8d60-a87753edbf48
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T15:47:51Z
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 0x065ef6160934983bb23265b9d9dadb16a62fd6ceca33144a96747d6ed9443ba0. Chain 2 (Bitcoin): anchored in block 954717 (2026-06-21T15:47:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f5404e85-3dbf-4c6c-8d60-a87753edbf48.json and https://artists.proofprofile.net/proofs/artist/f5404e85-3dbf-4c6c-8d60-a87753edbf48.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T15:47:51Z
album: Karma
  type: MusicAlbum
  date published: 2019-12-05
album: Pale Ghost
  type: MusicAlbum
  date published: 2021-01-11
album: Matter Earth
  type: MusicAlbum
  date published: 2022-07-05
album: Isola
  type: MusicAlbum
  date published: 2022-10-12
album: Where Giants Walk (live acoustic)
  type: MusicAlbum
  date published: 2023-09-22