Testnet
Avalanche Blockchain's Largest-Ever Upgrade Goes Live on Testnet
Avalanche9000 is meant to cut the cost of sending transactions and running validators, making it easier to build apps on the network, crypto's eighth-largest.

Ethereum's Dencun Upgrade Reaches Final ‘Holesky’ Testnet, Starting Countdown to Data 'Blobs'
The test simulated “proto-danksharding,” a technical feature aimed at reducing the cost of transactions for rollups as well as making data availability cheaper.

Ethereum Developers Set Timeline for Final ‘Dencun’ Testnet Upgrades
Developers will run through Dencun on the Sepolia and Holesky testnets on Jan. 30 and Feb. 7, putting the upgrade on track to reach the main network in late February or early March.

Liquidity-Focused Berachain Opens Layer-1 Testnet to Public
Berachain's pseudonymous founders plan "to accomplish more with less initial resources."

Ethereum Developers Appear Successful in Second Attempt at Holesky Test Network Launch
The original planned launch date of Holesky, on Sept. 15, was supposed to celebrate the one-year anniversary of Ethereum’s historic “Merge” transition. But things didn't go so smoothly. Now developers are trying again.

Ethereum’s Holesky Testnet Fails to Launch, in Rare Tech Misstep for the Blockchain
Developers of the Ethereum blockchain say there was a misconfiguration in the genesis files of the test network, and now they plan to try again in about two weeks.

Ethereum Blockchain Launches 'Holesky' Test Network, on First Anniversary of Historic 'Merge'
The debut of the testing system – designed to be twice as big as the main network so developers can simulate massive scaling, comes a year after Ethereum completed its historic "Merge" shift to a "proof-of-stake" model from the original "proof-of-work" setup that Bitcoin uses.

The Protocol: The CFTC Is Cracking Down on Crypto
The move marks a contrast to its previously 'lenient' image compared to the SEC.

Hello Holesky, Ethereum’s Newest Testnet
The new network comes after years of growth for Ethereum’s developer community and will replace the Goerli testnet.

Immutable, Web3 Gaming Platform, Launches zkEVM Testnet in Bid to Diversify Infrastructure
The ZK rollup is built using Polygon scaling technology, designed to make it easier for developers to spin up new application-specific blockchains.

