Version 20.0~rc1

Version 20 contains a new version (V12) of the protocol environment, which is the set of functions that a protocol can call. This new version is used by the Paris, protocol proposal for the successor of Oxford. This release contains the Paris B protocol proposal itself, as well as its associated protocol-specific executable binaries (baker, accuser, etc).

Note that the binaries associated to the Nairobi protocol have been removed as this protocol is now unactive.

Version v20 introduces the following changes or new features:


Since Octez version 18, RPCs accept both endorsements and attestations as input and/or output, with endorsement as default value but deprecated. Starting from version 20, attestation output is now the default. endorsement is still available, but it is deprecated and will be removed in a future version.

Some deprecated RPCs have been removed. Please check the changelog to see the list of removed RPCs.

The RPC /health/ready has been introduced to get the status of the RPC server.

Smart rollup

The Smart Rollup node now supports snapshots, to allow bootstrapping a rollup node without having to replay the whole L2 chain since the rollup genesis.

The smart rollup node now allows to export a snapshot, using octez-smart-rollup-node snapshot export, and to import a snapshot, using octez-smart-rollup-node snapshot import.

See the Smart Rollup node guide for more details on the Smart rollup node snapshots.


The DAL node is released with Octez v20.0, as the Paris protocol would activate the DAL on Tezos Mainnet upon protocol activation.

Check the documentation for more details on the DAL node and how to operate it.

Update Instructions

To update from sources:

git fetch
git checkout v20.0-rc1
make clean
opam switch remove . # To be used if the next step fails
make build-deps
eval $(opam env)

If you are using Docker instead, use the v20.0~rc1 Docker images of Octez.

You can also install Octez using Opam by running opam install octez.


Starting from Octez v20, a distribution of packages are provided along with each release. Binaries packages are now available for each Octez executable for the following distributions:

  • Debian Linux

  • Fedora Linux

  • Rocky Linux

  • Ubuntu

You may now install binaries by downloading their packages from the Octez release page, browsing to your distribution and then installing them with your package tool manager.


If you are upgrading from a different package distributor such as Serokell’s tezos-packaging, please pay attention to the possible differences between the two kinds of packages, in particular regarding the home directory for the tezos user.

For more details, see the installation instructions.