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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-1.15-blue.svg)](https://github.com/moovweb/gvm)
  9. [![Discord chat](https://img.shields.io/discord/669268347736686612.svg)](https://discord.gg/vcExX9T)
  10. [![license](https://img.shields.io/github/license/tendermint/tendermint.svg)](https://github.com/tendermint/tendermint/blob/master/LICENSE)
  11. [![tendermint/tendermint](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 | ![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 a Byzantine Fault Tolerant (BFT) middleware that takes a state transition machine - written in any programming language - and securely replicates it on many machines.
  17. For protocol details, see [the specification](https://github.com/tendermint/spec).
  18. For detailed analysis of the consensus protocol, including safety and liveness proofs,
  19. see our recent paper, "[The latest gossip on BFT consensus](https://arxiv.org/abs/1807.04938)".
  20. ## Releases
  21. Please do not depend on master as your production branch. Use [releases](https://github.com/tendermint/tendermint/releases) instead.
  22. Tendermint has been in the production of private and public environments, most notably the blockchains of the Cosmos Network. we haven't released v1.0 yet since we are making breaking changes to the protocol and the APIs.
  23. See below for more details about [versioning](#versioning).
  24. In any case, if you intend to run Tendermint in production, we're happy to help. You can
  25. contact us [over email](mailto:hello@interchain.berlin) or [join the chat](https://discord.gg/vcExX9T).
  26. ## Security
  27. To report a security vulnerability, see our [bug bounty
  28. program](https://hackerone.com/tendermint).
  29. For examples of the kinds of bugs we're looking for, see [our security policy](SECURITY.md).
  30. We also maintain a dedicated mailing list for security updates. We will only ever use this mailing list
  31. to notify you of vulnerabilities and fixes in Tendermint Core. You can subscribe [here](http://eepurl.com/gZ5hQD).
  32. ## Minimum requirements
  33. | Requirement | Notes |
  34. |-------------|------------------|
  35. | Go version | Go1.15 or higher |
  36. ## Documentation
  37. Complete documentation can be found on the [website](https://docs.tendermint.com/master/).
  38. ### Install
  39. See the [install instructions](/docs/introduction/install.md).
  40. ### Quick Start
  41. - [Single node](/docs/introduction/quick-start.md)
  42. - [Local cluster using docker-compose](/docs/networks/docker-compose.md)
  43. - [Remote cluster using Terraform and Ansible](/docs/networks/terraform-and-ansible.md)
  44. - [Join the Cosmos testnet](https://cosmos.network/testnet)
  45. ## Contributing
  46. Please abide by the [Code of Conduct](CODE_OF_CONDUCT.md) in all interactions.
  47. Before contributing to the project, please take a look at the [contributing guidelines](CONTRIBUTING.md)
  48. and the [style guide](STYLE_GUIDE.md). You may also find it helpful to read the
  49. [specifications](https://github.com/tendermint/spec), watch the [Developer Sessions](/docs/DEV_SESSIONS.md),
  50. and familiarize yourself with our
  51. [Architectural Decision Records](https://github.com/tendermint/tendermint/tree/master/docs/architecture).
  52. ## Versioning
  53. ### Semantic Versioning
  54. Tendermint uses [Semantic Versioning](http://semver.org/) to determine when and how the version changes.
  55. According to SemVer, anything in the public API can change at any time before version 1.0.0
  56. To provide some stability to Tendermint users in these 0.X.X days, the MINOR version is used
  57. to signal breaking changes across a subset of the total public API. This subset includes all
  58. interfaces exposed to other processes (cli, rpc, p2p, etc.), but does not
  59. include the Go APIs.
  60. That said, breaking changes in the following packages will be documented in the
  61. CHANGELOG even if they don't lead to MINOR version bumps:
  62. - crypto
  63. - config
  64. - libs
  65. - bits
  66. - bytes
  67. - json
  68. - log
  69. - math
  70. - net
  71. - os
  72. - protoio
  73. - rand
  74. - sync
  75. - strings
  76. - service
  77. - node
  78. - rpc/client
  79. - types
  80. ### Upgrades
  81. In an effort to avoid accumulating technical debt prior to 1.0.0,
  82. we do not guarantee that breaking changes (ie. bumps in the MINOR version)
  83. will work with existing Tendermint blockchains. In these cases you will
  84. have to start a new blockchain, or write something custom to get the old
  85. data into the new chain. However, any bump in the PATCH version should be
  86. compatible with existing blockchain histories.
  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`](https://github.com/informalsystems/tm-load-test).
  101. Additional tooling can be found in [/docs/tools](/docs/tools).
  102. ### Applications
  103. - [Cosmos SDK](http://github.com/cosmos/cosmos-sdk); a cryptocurrency application framework
  104. - [Ethermint](http://github.com/cosmos/ethermint); Ethereum on Tendermint
  105. - [Many more](https://tendermint.com/ecosystem)
  106. ### Research
  107. - [The latest gossip on BFT consensus](https://arxiv.org/abs/1807.04938)
  108. - [Master's Thesis on Tendermint](https://atrium.lib.uoguelph.ca/xmlui/handle/10214/9769)
  109. - [Original Whitepaper: "Tendermint: Consensus Without Mining"](https://tendermint.com/static/docs/tendermint.pdf)
  110. - [Tendermint Core Blog](https://medium.com/tendermint/tagged/tendermint-core)
  111. - [Cosmos Blog](https://blog.cosmos.network/tendermint/home)
  112. ## Join us!
  113. Tendermint Core is maintained by [Interchain GmbH](https://interchain.berlin).
  114. If you'd like to work full-time on Tendermint Core, [we're hiring](https://interchain-gmbh.breezy.hr/p/682fb7e8a6f601-software-engineer-tendermint-core)!
  115. Funding for Tendermint Core development comes primarily from the [Interchain Foundation](https://interchain.io),
  116. a Swiss non-profit. The Tendermint trademark is owned by [Tendermint Inc.](https://tendermint.com), the for-profit entity
  117. that also maintains [tendermint.com](https://tendermint.com).