New Release 5.8.0

zcashd 5.8.0 is a maintenance release that updates dependencies and sets a new end-of-service height to ensure continuity of services.

New Release 5.8.0

A look back: NU5 and network sandblasting

This post details ECC’s motivations, challenges, and accomplishments with regard to zcashd Network Upgrade 5 (NU5) and the sandblasting attack.

A look back: NU5 and network sandblasting

New Release 5.7.0

zcashd 5.7.0 deprecates fetch-params.sh and zcash-fetch-params and bundles zk-SNARK parameters directly so they do not need to be downloaded or stored separately. All node operators, which include our mining and other ecosystem partners, should upgrade to this latest version as soon as possible.

New Release 5.7.0

New Release 5.6.0

Release 5.6.0 introduces the functionality necessary for light wallets to access spendable funds without fully scanning the blockchain. This is […]

New Release 5.6.0

New Release 5.5.0

Release 5.5.0 introduces a number of bug fixes and changes to the underlying libraries that support Zcash. Much of this work lays the foundation for the fund availability features coming with the next release.

New Release 5.5.0

Update: Addressing Zcash wallet performance issues

Electric Coin Co. (ECC) has been working since June to resolve Zcash wallet performance issues that are affecting users of third-party apps Edge, Nighthawk, and Unstoppable.* All three of these mobile wallets utilize the ECC SDK.Our engineers have made progress, however, work remains — including further updates to zcashd, lightwalletd, the ECC wallet SDKs, and the ECC prototype wallet — to fully restore good user experience in the impacted apps.

Update: Addressing Zcash wallet performance issues

Zcash Proof-of-Stake Research

In August, ECC shared its rationale for moving Zcash from a proof-of-work consensus mechanism to proof-of-stake.

Zcash Proof-of-Stake Research

NU5 activation and Halo Arc release delayed for remediation of consensus bug in testnet

During the course of testing NU5, a consensus bug emerged that caused the testnet chain to fork. The ECC Core […]

NU5 activation and Halo Arc release delayed for remediation of consensus bug in testnet

ECC Engineering: Year in Review

We had many successes in 2021 across all of our engineering-related teams including Core, Mobile, and DevSecOps, a team comprising what was previously the separate DevInfra and Security teams. These successes included the regular cadence of releases as well as breakthrough cryptographic research, developments to move the shielded wallet ecosystem forward, operational enhancements and advancements, and a continued demonstration of our commitment to security best practices, ensuring safe and secure releases and network upgrades. 

ECC Engineering: Year in Review

New Release 4.6.0-1

TL;DR: The 4.5.0, 4.5.1, and 4.5.1-1 zcashd nodes will reach End of Service on or about January 10th, 2022. Prior to that time, miners must upgrade to 4.6.0-1 and all other testnet and mainnet nodes should upgrade to either 4.6.0 or 4.6.0-1.

New Release 4.6.0-1

New Release 4.6.0

TL;DR: The 4.5.0, 4.5.1, and 4.5.1-1 zcashd nodes will reach End of Service on or about January 10, 2022. Prior […]

New Release 4.6.0

ECC roadmap calls for focus on wallet, proof of stake and interoperability

It has become clear that the best way for ECC to contribute to the Zcash community over the next three years is to release an official ECC wallet on top of a highly interoperable Zcash protocol that leverages proof-of-stake consensus.

ECC roadmap calls for focus on wallet, proof of stake and interoperability