# Condrieu testnet February 21st, 22 update Pre-runs of the 'Condrieu' testnet have been launched in the past two weeks, to prepare for the final launch. ## Spec ### Differences with the full spec Condrieu differs from the current state of the spec on the following points: * No post-state leaves in block or witness * `WITNESS_FILL_COST` isn't charged * The classic (20 byte) address format is used * The consensus algorithm is Clique * the proof is encoded in the flat binary `rust-verkle` format * the (key,value) pairs are encoded using RLP ### Testnet limitations * full-sync only * no functional block explorer * stateful-only network * only composed of geth clients * running revision [94b2e58](https://github.com/gballet/go-ethereum/commit/94b2e58b10388284590163323c3af351a8ff46b6) ## Achieved goals * ability to create simple contracts from metamask * ability to send funds between accounts * ability to obtain funds from a faucet ## Issues * calling `eth_estimateGas` has a tendency to greatly slow geth down. * This has an impact on remix, making the deployment of large contracts cumbersome * multiple deployment of the same contract kill the bootnode * missing leaves were reported as present, with value `0` * a bug in geth's `get_tree_key` produced incorrect (but functional) addresses * the state would be lost on stopping/restarting a node These issues are fixed or in the process of being fixed, and the testnet will be relaunched this week. ## Next steps * Relaunch the testnet with an updated geth * Deploy a landing page and a block explorer * Share connection details with the public * demonstrate that a stateless client can follow the chain