• Blockchain Height: 285658
  • Coins in Circulation: 28,108,640 Beams
  • Total Supply: 262,800,000 Beams
  • Next Halving: Jan 04, 2020
  • Hard Fork: Aug 15, 2019
  • Blockchain Height: 285658
  • 28,108,640 Beams
  • Total Supply: 262,800,000 Beams
  • Next Halving: Jan 04, 2020
  • Hard Fork: Aug 15, 2019
The first Hard Fork is scheduled for Aug 15 (block #321321). To continue using Beam, all users must update all software to version 3.0 or higher before Aug 15.

Cryptographic Signature

In commercial practice, the validity of a contract is guaranteed by handwritten signatures. The essence of a signature is that only one person can produce it, but anybody can recognize. In a digital replacement, a user should be able to produce a message whose authenticity can be checked by anyone, by cannot be produced by anyone else.

A cryptographic signature of a message is code dependent on a secret is known only to the signer and on the content of the message being signed. A verifier can check the validity of the signature without revealing the secret.

Asymmetric encryption from public key cryptography provides a solution to the signature problem. Since in symmetric encryption, the two ends have the same key, so both the sender and receiver could have produced the encrypted message. 

Encrypting a message only to prove authenticity is inefficient, a one-way hash function can map arbitrarily large data into smaller ones.

Digital signatures are a basic requirement for trust over the internet.

High-res logo