40 releases (major breaking)
| 29.0.0 | Dec 18, 2025 |
|---|---|
| 28.0.1 | Feb 4, 2026 |
| 28.0.0 | Dec 8, 2025 |
| 27.0.0 | Oct 3, 2025 |
| 0.0.0 |
|
#2 in #relay-chain
1,177 downloads per month
Used in 19 crates
(2 directly)
15MB
251K
SLoC
Rococo: v2.1
Rococo is a testnet runtime with no stability guarantees.
How to build rococo runtime
EpochDurationInBlocks parameter is configurable via ROCOCO_EPOCH_DURATION environment variable. To build wasm
runtime blob with customized epoch duration the following command shall be executed:
ROCOCO_EPOCH_DURATION=10 ./polkadot/scripts/build-only-wasm.sh rococo-runtime /path/to/output/directory/
How to run rococo-local
The Cumulus Tutorial details building, starting, and
testing rococo-local and parachains connecting to it.
How to register a parachain on the Rococo testnet
The parachain registration process on the public Rococo testnet is also outlined.
Dependencies
~31–54MB
~790K SLoC