Decentralized Timestamping

A timestamp is a proof of existence of a document at a certain time relying on the cryptographic security of the clock mechanism and the hash function. Applications may involve a digital signature verification, a defensive publication. Consensus log (currently, blockchain) is a tamperproof transaction log of a distributed cryptocurrency database. After a rolling checkpoint a timestamp cannot be changed. Blacknet is a decentralized network that maintains the public consensus log. Decentralized timestamping may be implemented in a future version on the proof of stake network.

RPC API

A sketch of RPC API for creating and verifying timestamps.

• Create timestamp

• Verify timestamp
  Type	GET
  Path	/verify/{hash}
  Parameters
  hash	hash of document

  Returns timestamp of a document with given hash.