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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/AzefAFd)
  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 | [![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. Please do not depend on master as your production branch. Use [releases](https://github.com/tendermint/tendermint/releases) instead.
  23. Tendermint is being used in production in both private and public environments,
  24. most notably the blockchains of the [Cosmos Network](https://cosmos.network/).
  25. However, we are still making breaking changes to the protocol and the APIs and have not yet released v1.0.
  26. See below for more details about [versioning](#versioning).
  27. In any case, if you intend to run Tendermint in production, we're happy to help. You can
  28. contact us [over email](mailto:hello@interchain.berlin) or [join the chat](https://discord.gg/AzefAFd).
  29. ## Security
  30. To report a security vulnerability, see our [bug bounty
  31. program](https://hackerone.com/tendermint).
  32. For examples of the kinds of bugs we're looking for, see [our security policy](SECURITY.md)
  33. We also maintain a dedicated mailing list for security updates. We will only ever use this mailing list
  34. to notify you of vulnerabilities and fixes in Tendermint Core. You can subscribe [here](http://eepurl.com/gZ5hQD).
  35. ## Minimum requirements
  36. | Requirement | Notes |
  37. | ----------- | ---------------- |
  38. | Go version | Go1.15 or higher |
  39. ## Documentation
  40. Complete documentation can be found on the [website](https://docs.tendermint.com/master/).
  41. ### Install
  42. See the [install instructions](/docs/introduction/install.md).
  43. ### Quick Start
  44. - [Single node](/docs/introduction/quick-start.md)
  45. - [Local cluster using docker-compose](/docs/networks/docker-compose.md)
  46. - [Remote cluster using Terraform and Ansible](/docs/networks/terraform-and-ansible.md)
  47. - [Join the Cosmos testnet](https://cosmos.network/testnet)
  48. ## Contributing
  49. Please abide by the [Code of Conduct](CODE_OF_CONDUCT.md) in all interactions.
  50. Before contributing to the project, please take a look at the [contributing guidelines](CONTRIBUTING.md)
  51. and the [style guide](STYLE_GUIDE.md). You may also find it helpful to read the
  52. [specifications](https://github.com/tendermint/spec), watch the [Developer Sessions](/docs/DEV_SESSIONS.md),
  53. and familiarize yourself with our
  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 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. - config
  67. - libs
  68. - bech32
  69. - bits
  70. - bytes
  71. - json
  72. - log
  73. - math
  74. - net
  75. - os
  76. - protoio
  77. - rand
  78. - sync
  79. - strings
  80. - service
  81. - node
  82. - rpc/client
  83. - types
  84. ### Upgrades
  85. In an effort to avoid accumulating technical debt prior to 1.0.0,
  86. we do not guarantee that breaking changes (ie. bumps in the MINOR version)
  87. will work with existing Tendermint blockchains. In these cases you will
  88. have to start a new blockchain, or write something custom to get the old
  89. data into the new chain. However, any bump in the PATCH version should be
  90. compatible with existing blockchain histories.
  91. For more information on upgrading, see [UPGRADING.md](./UPGRADING.md).
  92. ### Supported Versions
  93. Because we are a small core team, we only ship patch updates, including security updates,
  94. to the most recent minor release and the second-most recent minor release. Consequently,
  95. we strongly recommend keeping Tendermint up-to-date. Upgrading instructions can be found
  96. in [UPGRADING.md](./UPGRADING.md).
  97. ## Resources
  98. ### Tendermint Core
  99. For details about the blockchain data structures and the p2p protocols, see the
  100. [Tendermint specification](https://docs.tendermint.com/master/spec/).
  101. For details on using the software, see the [documentation](/docs/) which is also
  102. hosted at: <https://docs.tendermint.com/master/>
  103. ### Tools
  104. Benchmarking is provided by [`tm-load-test`](https://github.com/informalsystems/tm-load-test).
  105. Additional tooling can be found in [/docs/tools](/docs/tools).
  106. ### Applications
  107. - [Cosmos SDK](http://github.com/cosmos/cosmos-sdk); a cryptocurrency application framework
  108. - [Ethermint](http://github.com/cosmos/ethermint); Ethereum on Tendermint
  109. - [Many more](https://tendermint.com/ecosystem)
  110. ### Research
  111. - [The latest gossip on BFT consensus](https://arxiv.org/abs/1807.04938)
  112. - [Master's Thesis on Tendermint](https://atrium.lib.uoguelph.ca/xmlui/handle/10214/9769)
  113. - [Original Whitepaper: "Tendermint: Consensus Without Mining"](https://tendermint.com/static/docs/tendermint.pdf)
  114. - [Blog](https://blog.cosmos.network/tendermint/home)