The Black Tula
type: MusicGroup
genre: groove metal
genre: rap metal
genre: thrash metal
popularity: 4
followers: 970
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xce338f4323d4e3e686527d26cf8c3aea3ea06792e5e8b76de53cc598eb973154
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953958
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953958
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/26bd946e-e3c3-4e05-aafb-50cfb344410c.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/26bd946e-e3c3-4e05-aafb-50cfb344410c.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/26bd946e-e3c3-4e05-aafb-50cfb344410c
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T14:52:44Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xce338f4323d4e3e686527d26cf8c3aea3ea06792e5e8b76de53cc598eb973154","name":"The Black Tula","registered_at":"2026-06-16T03:07:09Z","symbol":"NIM0918066","token_address":"0x66d241a41d064cc72f935ee1babcc6b8aa84d0a6","type":"artist","uuid":"26bd946e-e3c3-4e05-aafb-50cfb344410c"}
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 0xce338f4323d4e3e686527d26cf8c3aea3ea06792e5e8b76de53cc598eb973154. Chain 2 (Bitcoin): anchored in block 953958 (2026-06-16T14:52:44Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/26bd946e-e3c3-4e05-aafb-50cfb344410c.json and https://artists.proofprofile.net/proofs/artist/26bd946e-e3c3-4e05-aafb-50cfb344410c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T14:52:44Z
  text: {"copyright_id":"0xce338f4323d4e3e686527d26cf8c3aea3ea06792e5e8b76de53cc598eb973154","name":"The Black Tula","registered_at":"2026-06-16T03:07:09Z","symbol":"NIM0918066","token_address":"0x66d241a41d064cc72f935ee1babcc6b8aa84d0a6","type":"artist","uuid":"26bd946e-e3c3-4e05-aafb-50cfb344410c"}
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