BlacTears SA
type: MusicGroup
genre: deep house
popularity: 2
followers: 36
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x1d01da0cacd7a272ae6f18a216a603e16780f72f8e9d9c7ba7dcaaaef9e6d670
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954705
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954705
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f1aabaaa-4a41-4b71-be51-609eb5e1c2f5.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f1aabaaa-4a41-4b71-be51-609eb5e1c2f5.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/f1aabaaa-4a41-4b71-be51-609eb5e1c2f5
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T13:42:37Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x1d01da0cacd7a272ae6f18a216a603e16780f72f8e9d9c7ba7dcaaaef9e6d670","name":"BlacTears SA","registered_at":"2026-06-21T13:29:41Z","symbol":"NIM1935001","token_address":"0x7d16e4e74950a1286fbae933c5a6f92954cf5a2a","type":"artist","uuid":"f1aabaaa-4a41-4b71-be51-609eb5e1c2f5"}
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 0x1d01da0cacd7a272ae6f18a216a603e16780f72f8e9d9c7ba7dcaaaef9e6d670. Chain 2 (Bitcoin): anchored in block 954705 (2026-06-21T13:42:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f1aabaaa-4a41-4b71-be51-609eb5e1c2f5.json and https://artists.proofprofile.net/proofs/artist/f1aabaaa-4a41-4b71-be51-609eb5e1c2f5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T13:42:37Z
  text: {"copyright_id":"0x1d01da0cacd7a272ae6f18a216a603e16780f72f8e9d9c7ba7dcaaaef9e6d670","name":"BlacTears SA","registered_at":"2026-06-21T13:29:41Z","symbol":"NIM1935001","token_address":"0x7d16e4e74950a1286fbae933c5a6f92954cf5a2a","type":"artist","uuid":"f1aabaaa-4a41-4b71-be51-609eb5e1c2f5"}
album: Self Introspection
  type: MusicAlbum
  date published: 2023-12-01