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Clean Any interface (#8167)
* Clean Any interface

+ removed Any.Pack method. This method is not needed, because we have specialized
  functions for createing new Any values. It could be used inappropriately with existing
  Any objects.

* removed deprecated PackAny function

* fix linter issue

* update nil handling

* NewAnyWithValue returns error on nil instead of panic

* NewMsgCreateValidator: handle nil pubkey

* Remove AsAny and tx builder workarounds

* fix linter issue

* Add AsAny methods to TxBuilder and StdTxConfig, but keep intoAny interface private

* remove tx.PubKeyToAny

* cosmetic updates

* fix method interface

* move ProtoTxProvider to x/auth/tx
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README.md

Cosmos SDK

banner

The Cosmos-SDK is a framework for building blockchain applications in Golang. It is being used to build Gaia, the first implementation of the Cosmos Hub.

WARNING: The SDK has mostly stabilized, but we are still making some breaking changes.

Note: Requires Go 1.15+

Quick Start

To learn how the SDK works from a high-level perspective, go to the SDK Intro.

If you want to get started quickly and learn how to build on top of the SDK, please follow the SDK Application Tutorial. You can also fork the tutorial's repository to get started building your own Cosmos SDK application.

For more, please go to the Cosmos SDK Docs.

Cosmos Hub Mainnet

The Cosmos Hub application, gaia, has moved to its own repository. Go there to join the Cosmos Hub mainnet and more.

Starport

If you are starting a new app or a new module you can use Starport to help you get started and speed up development. If you have any questions or find a bug, feel free to open an issue in the repo.

Disambiguation

This Cosmos-SDK project is not related to the React-Cosmos project (yet). Many thanks to Evan Coury and Ovidiu (@skidding) for this Github organization name. As per our agreement, this disambiguation notice will stay here.