Third Black Day
type: MusicGroup
genre: neofolk
popularity: 2
followers: 224
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x4d98d7e6025d02dd8243595e22524a49632628adf2a76bcb06fd43c4f4f18572
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954025
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954025
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/3802ba6a-a448-460b-8448-2843bfcba632.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/3802ba6a-a448-460b-8448-2843bfcba632.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/3802ba6a-a448-460b-8448-2843bfcba632
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T00:32:47Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x4d98d7e6025d02dd8243595e22524a49632628adf2a76bcb06fd43c4f4f18572","name":"Third Black Day","registered_at":"2026-06-16T09:25:30Z","symbol":"NIM1008417","token_address":"0x68b205669954e5c047036d40da419cc94f23652c","type":"artist","uuid":"3802ba6a-a448-460b-8448-2843bfcba632"}
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 0x4d98d7e6025d02dd8243595e22524a49632628adf2a76bcb06fd43c4f4f18572. Chain 2 (Bitcoin): anchored in block 954025 (2026-06-17T00:32:47Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3802ba6a-a448-460b-8448-2843bfcba632.json and https://artists.proofprofile.net/proofs/artist/3802ba6a-a448-460b-8448-2843bfcba632.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T00:32:47Z
  text: {"copyright_id":"0x4d98d7e6025d02dd8243595e22524a49632628adf2a76bcb06fd43c4f4f18572","name":"Third Black Day","registered_at":"2026-06-16T09:25:30Z","symbol":"NIM1008417","token_address":"0x68b205669954e5c047036d40da419cc94f23652c","type":"artist","uuid":"3802ba6a-a448-460b-8448-2843bfcba632"}
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