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* client/api: Make `storage_keys` blocking

Signed-off-by: Alexandru Vasile <>

* client/api: Ensure `state_*` RPC methods are blocking

Signed-off-by: Alexandru Vasile <>

* client/rpc: Ensure `childstate_*` RPC methods are blocking

Signed-off-by: Alexandru Vasile <>

* client/rpc: `ChainApi` make RPC methods sync

Signed-off-by: Alexandru Vasile <>

* Remove unused async-traits

Signed-off-by: Alexandru Vasile <>

* client/rpc-api: Make chain RPC methods blocking

Signed-off-by: Alexandru Vasile <>

* Update client/rpc/src/state/

Co-authored-by: Bastian Köcher <>

* Add `blocking` to `state_getKeysPaged` RPC call

Signed-off-by: Alexandru Vasile <>

* Fix build and warning

Signed-off-by: Alexandru Vasile <>

* Remove `async_trait` tidyup

Signed-off-by: Alexandru Vasile <>

Co-authored-by: Bastian Köcher <>

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Substrate · GitHub license GitLab Status PRs Welcome Matrix

Substrate is a next-generation framework for blockchain innovation 🚀.

Trying it out

Simply go to and follow the installation instructions. You can also try out one of the tutorials.

Contributions & Code of Conduct

Please follow the contributions guidelines as outlined in docs/CONTRIBUTING.adoc. In all communications and contributions, this project follows the Contributor Covenant Code of Conduct.


The security policy and procedures can be found in docs/


The reason for the split-licensing is to ensure that for the vast majority of teams using Substrate to create feature-chains, then all changes can be made entirely in Apache2-licensed code, allowing teams full freedom over what and how they release and giving licensing clarity to commercial teams.

In the interests of the community, we require any deeper improvements made to Substrate's core logic (e.g. Substrate's internal consensus, crypto or database code) to be contributed back so everyone can benefit.