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  1. # Tendermint
  2. ![banner](docs/tendermint-core-image.jpg)
  3. [Byzantine-Fault Tolerant](https://en.wikipedia.org/wiki/Byzantine_fault_tolerance)
  4. [State Machines](https://en.wikipedia.org/wiki/State_machine_replication).
  5. Or [Blockchain](<https://en.wikipedia.org/wiki/Blockchain_(database)>), for short.
  6. [![version](https://img.shields.io/github/tag/tendermint/tendermint.svg)](https://github.com/tendermint/tendermint/releases/latest)
  7. [![API Reference](https://camo.githubusercontent.com/915b7be44ada53c290eb157634330494ebe3e30a/68747470733a2f2f676f646f632e6f72672f6769746875622e636f6d2f676f6c616e672f6764646f3f7374617475732e737667)](https://pkg.go.dev/github.com/tendermint/tendermint)
  8. [![Go version](https://img.shields.io/badge/go-1.13-blue.svg)](https://github.com/moovweb/gvm)
  9. [![Discord chat](https://img.shields.io/discord/669268347736686612.svg)](https://discord.gg/AzefAFd)
  10. [![license](https://img.shields.io/github/license/tendermint/tendermint.svg)](https://github.com/tendermint/tendermint/blob/master/LICENSE)
  11. [![](https://tokei.rs/b1/github/tendermint/tendermint?category=lines)](https://github.com/tendermint/tendermint)
  12. [![Sourcegraph](https://sourcegraph.com/github.com/tendermint/tendermint/-/badge.svg)](https://sourcegraph.com/github.com/tendermint/tendermint?badge)
  13. | Branch | Tests | Coverage | Linting |
  14. | ------ | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ | ------------------------------------------------------------------------------------------------------------------------------------ | -------------------------------------------------------------------------- |
  15. | master | [![CircleCI](https://circleci.com/gh/tendermint/tendermint/tree/master.svg?style=shield)](https://circleci.com/gh/tendermint/tendermint/tree/master) <br /> ![Tests](https://github.com/tendermint/tendermint/workflows/Tests/badge.svg?branch=master) | [![codecov](https://codecov.io/gh/tendermint/tendermint/branch/master/graph/badge.svg)](https://codecov.io/gh/tendermint/tendermint) | ![Lint](https://github.com/tendermint/tendermint/workflows/Lint/badge.svg) |
  16. Tendermint Core is Byzantine Fault Tolerant (BFT) middleware that takes a state transition machine - written in any programming language -
  17. and securely replicates it on many machines.
  18. For protocol details, see [the specification](https://github.com/tendermint/spec).
  19. For detailed analysis of the consensus protocol, including safety and liveness proofs,
  20. see our recent paper, "[The latest gossip on BFT consensus](https://arxiv.org/abs/1807.04938)".
  21. ## Releases
  22. NOTE: The master branch is now an active development branch (starting with `v0.32`). Please, do not depend on it and
  23. use [releases](https://github.com/tendermint/tendermint/releases) instead.
  24. Tendermint is being used in production in both private and public environments,
  25. most notably the blockchains of the [Cosmos Network](https://cosmos.network/).
  26. However, we are still making breaking changes to the protocol and the APIs and have not yet released v1.0.
  27. See below for more details about [versioning](#versioning).
  28. In any case, if you intend to run Tendermint in production,
  29. please [contact us](mailto:partners@tendermint.com) and [join the chat](https://riot.im/app/#/room/#tendermint:matrix.org).
  30. ## Security
  31. To report a security vulnerability, see our [bug bounty
  32. program](https://hackerone.com/tendermint)
  33. For examples of the kinds of bugs we're looking for, see [SECURITY.md](SECURITY.md)
  34. ## Minimum requirements
  35. | Requirement | Notes |
  36. | ----------- | ---------------- |
  37. | Go version | Go1.13 or higher |
  38. ## Documentation
  39. Complete documentation can be found on the [website](https://docs.tendermint.com/master/).
  40. ### Install
  41. See the [install instructions](/docs/introduction/install.md)
  42. ### Quick Start
  43. - [Single node](/docs/introduction/quick-start.md)
  44. - [Local cluster using docker-compose](/docs/networks/docker-compose.md)
  45. - [Remote cluster using terraform and ansible](/docs/networks/terraform-and-ansible.md)
  46. - [Join the Cosmos testnet](https://cosmos.network/testnet)
  47. ## Contributing
  48. Please abide by the [Code of Conduct](CODE_OF_CONDUCT.md) in all interactions.
  49. Before contributing to the project, please take a look at the [contributing guidelines](CONTRIBUTING.md)
  50. and the [style guide](STYLE_GUIDE.md).
  51. To get more active, Join the wider community at [Discord](https://discord.gg/AzefAFd) or jump onto the [Forum](https://forum.cosmos.network/).
  52. Learn more by reading the code and the
  53. [specifications](https://github.com/tendermint/spec) or watch the [Developer Sessions](/docs/DEV_SESSIONS.md) and read up on the
  54. [Architectural Decision Records](https://github.com/tendermint/tendermint/tree/master/docs/architecture).
  55. ## Versioning
  56. ### Semantic Versioning
  57. Tendermint uses [Semantic Versioning](http://semver.org/) to determine when and how the version changes.
  58. According to SemVer, anything in the public API can change at any time before version 1.0.0
  59. To provide some stability to Tendermint users in these 0.X.X days, the MINOR version is used
  60. to signal breaking changes across a subset of the total public API. This subset includes all
  61. interfaces exposed to other processes (cli, rpc, p2p, etc.), but does not
  62. include the in-process Go APIs.
  63. That said, breaking changes in the following packages will be documented in the
  64. CHANGELOG even if they don't lead to MINOR version bumps:
  65. - crypto
  66. - types
  67. - rpc/client
  68. - config
  69. - node
  70. - libs
  71. - bech32
  72. - common
  73. - db
  74. - errors
  75. - log
  76. Exported objects in these packages that are not covered by the versioning scheme
  77. are explicitly marked by `// UNSTABLE` in their go doc comment and may change at any
  78. time without notice. Functions, types, and values in any other package may also change at any time.
  79. ### Upgrades
  80. In an effort to avoid accumulating technical debt prior to 1.0.0,
  81. we do not guarantee that breaking changes (ie. bumps in the MINOR version)
  82. will work with existing tendermint blockchains. In these cases you will
  83. have to start a new blockchain, or write something custom to get the old
  84. data into the new chain.
  85. However, any bump in the PATCH version should be compatible with existing histories
  86. (if not please open an [issue](https://github.com/tendermint/tendermint/issues)).
  87. For more information on upgrading, see [UPGRADING.md](./UPGRADING.md).
  88. ### Supported Versions
  89. Because we are a small core team, we only ship patch updates, including security updates,
  90. to the most recent minor release and the second-most recent minor release. Consequently,
  91. we strongly recommend keeping Tendermint up-to-date. Upgrading instructions can be found
  92. in [UPGRADING.md](./UPGRADING.md).
  93. ## Resources
  94. ### Tendermint Core
  95. For details about the blockchain data structures and the p2p protocols, see the
  96. [Tendermint specification](https://docs.tendermint.com/master/spec/).
  97. For details on using the software, see the [documentation](/docs/) which is also
  98. hosted at: https://docs.tendermint.com/master/
  99. ### Tools
  100. Benchmarking is provided by `tm-load-test`.
  101. The code for `tm-load-test` can be found [here](https://github.com/informalsystems/tm-load-test) this binary needs to be built separately.
  102. Additional documentation is found [here](/docs/tools).
  103. ### Sub-projects
  104. - [Amino](http://github.com/tendermint/go-amino), reflection-based proto3, with
  105. interfaces
  106. - [IAVL](http://github.com/tendermint/iavl), Merkleized IAVL+ Tree implementation
  107. - [Tm-db](http://github.com/tendermint/tm-db), Data Base abstractions to be used in applications.
  108. ### Applications
  109. - [Cosmos SDK](http://github.com/cosmos/cosmos-sdk); a cryptocurrency application framework
  110. - [Ethermint](http://github.com/cosmos/ethermint); Ethereum on Tendermint
  111. - [Many more](https://tendermint.com/ecosystem)
  112. ### Research
  113. - [The latest gossip on BFT consensus](https://arxiv.org/abs/1807.04938)
  114. - [Master's Thesis on Tendermint](https://atrium.lib.uoguelph.ca/xmlui/handle/10214/9769)
  115. - [Original Whitepaper: "Tendermint: Consensus Without Mining"](https://tendermint.com/static/docs/tendermint.pdf)
  116. - [Blog](https://blog.cosmos.network/tendermint/home)