Bitcoin Cash Protocol Successfully Upgrades — Schnorr Signatures Are Here

Another Bitcoin Cash Upgrade Achieved
On Wednesday, May 15, the Bitcoin Cash network has completed yet another successful upgrade by implementing two new features — Segwit recovery and Schnorr signatures. Essentially, the Segwit recovery addition makes it possible for network participants to recover funds that have been sent to Segwit addresses by accident. The implementation makes an exemption following the enforcement of the new CLEANSTACK rule that made Segwit recovery previously impossible after the upgrade last November. But the high profile feature everyone’s been chatting about is the implementation of Schnorr signatures, a digital signature scheme that allows for complex signing abilities.

Bitcoin Cash Using Schnorr Will Aid Privacy & Scaling
Further Schnorr related improvements can provide multiple parties with the ability to transact with simple multi-party aggregation schemes. Because Schnorr signatures are only 64 bytes in contrast to the traditional 70 bytes used by ECDSA signatures, initially people can take advantage of the 4% savings in regard to blockchain storage and bandwidth. But with further upgrades and the implementation of public signature aggregation, the entire network’s scaling abilities could be enhanced by reducing blockchain storage and bandwidth by at least 20-25%. When Schnorr is combined with concepts like pay-to-public-key-hash (P2PKH) addresses and the recently added opcode OP_CHECKSIG, other benefits can be added to transactions like privacy and decision-based smart contracts. As of today, after the initial implementation BCH developers will be able to build:- Payment channels hidden as ordinary payments.
- Atomic swaps hidden as ordinary payments.
- Lightning-style payment channel networks too, if desired.
- Secure chains of unconfirmed transactions involving multiple parties (layer 2).

- An Expert Explains The Upcoming BCH Network Upgrade
- Schnorr signatures for dummies
- Schnorr signatures for (not so) dummies
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