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  1. # Tendermint
  2. [Byzantine-Fault Tolerant](https://en.wikipedia.org/wiki/Byzantine_fault_tolerance)
  3. [State Machine Replication](https://en.wikipedia.org/wiki/State_machine_replication).
  4. Or [Blockchain](https://en.wikipedia.org/wiki/Blockchain_(database)) for short.
  5. [![version](https://img.shields.io/github/tag/tendermint/tendermint.svg)](https://github.com/tendermint/tendermint/releases/latest)
  6. [![API Reference](
  7. https://camo.githubusercontent.com/915b7be44ada53c290eb157634330494ebe3e30a/68747470733a2f2f676f646f632e6f72672f6769746875622e636f6d2f676f6c616e672f6764646f3f7374617475732e737667
  8. )](https://godoc.org/github.com/tendermint/tendermint)
  9. [![Go version](https://img.shields.io/badge/go-1.9.2-blue.svg)](https://github.com/moovweb/gvm)
  10. [![riot.im](https://img.shields.io/badge/riot.im-JOIN%20CHAT-green.svg)](https://riot.im/app/#/room/#tendermint:matrix.org)
  11. [![license](https://img.shields.io/github/license/tendermint/tendermint.svg)](https://github.com/tendermint/tendermint/blob/master/LICENSE)
  12. [![](https://tokei.rs/b1/github/tendermint/tendermint?category=lines)](https://github.com/tendermint/tendermint)
  13. Branch | Tests | Coverage
  14. ----------|-------|----------
  15. master | [![CircleCI](https://circleci.com/gh/tendermint/tendermint/tree/master.svg?style=shield)](https://circleci.com/gh/tendermint/tendermint/tree/master) | [![codecov](https://codecov.io/gh/tendermint/tendermint/branch/master/graph/badge.svg)](https://codecov.io/gh/tendermint/tendermint)
  16. develop | [![CircleCI](https://circleci.com/gh/tendermint/tendermint/tree/develop.svg?style=shield)](https://circleci.com/gh/tendermint/tendermint/tree/develop) | [![codecov](https://codecov.io/gh/tendermint/tendermint/branch/develop/graph/badge.svg)](https://codecov.io/gh/tendermint/tendermint)
  17. Tendermint Core is Byzantine Fault Tolerant (BFT) middleware that takes a state transition machine - written in any programming language -
  18. and securely replicates it on many machines.
  19. For protocol details, see [the specification](/docs/spec).
  20. ## A Note on Production Readiness
  21. While Tendermint is being used in production in private, permissioned
  22. environments, we are still working actively to harden and audit it in preparation
  23. for use in public blockchains, such as the [Cosmos Network](https://cosmos.network/).
  24. We are also still making breaking changes to the protocol and the APIs.
  25. Thus we tag the releases as *alpha software*.
  26. In any case, if you intend to run Tendermint in production,
  27. please [contact us](https://riot.im/app/#/room/#tendermint:matrix.org) :)
  28. ## Security
  29. To report a security vulnerability, see our [bug bounty
  30. program](https://tendermint.com/security).
  31. For examples of the kinds of bugs we're looking for, see [SECURITY.md](SECURITY.md)
  32. ## Minimum requirements
  33. Requirement|Notes
  34. ---|---
  35. Go version | Go1.9 or higher
  36. ## Install
  37. See the [install instructions](/docs/install.rst)
  38. ## Quick Start
  39. - [Single node](/docs/using-tendermint.rst)
  40. - [Local cluster using docker-compose](/networks/local)
  41. - [Remote cluster using terraform and ansible](/docs/terraform-and-ansible.md)
  42. - [Join the public testnet](https://cosmos.network/testnet)
  43. ## Resources
  44. ### Tendermint Core
  45. For details about the blockchain data structures and the p2p protocols, see the
  46. the [Tendermint specification](/docs/spec).
  47. For details on using the software, [Read The Docs](https://tendermint.readthedocs.io/en/master/).
  48. Additional information about some - and eventually all - of the sub-projects below, can be found at Read The Docs.
  49. ### Sub-projects
  50. * [ABCI](http://github.com/tendermint/abci), the Application Blockchain Interface
  51. * [Go-Wire](http://github.com/tendermint/go-wire), a deterministic serialization library
  52. * [Go-Crypto](http://github.com/tendermint/tendermint/crypto), an elliptic curve cryptography library
  53. * [TmLibs](http://github.com/tendermint/tmlibs), an assortment of Go libraries used internally
  54. * [IAVL](http://github.com/tendermint/iavl), Merkleized IAVL+ Tree implementation
  55. ### Tools
  56. * [Deployment, Benchmarking, and Monitoring](http://tendermint.readthedocs.io/projects/tools/en/develop/index.html#tendermint-tools)
  57. ### Applications
  58. * [Cosmos SDK](http://github.com/cosmos/cosmos-sdk); a cryptocurrency application framework
  59. * [Ethermint](http://github.com/tendermint/ethermint); Ethereum on Tendermint
  60. * [Many more](https://tendermint.readthedocs.io/en/master/ecosystem.html#abci-applications)
  61. ### More
  62. * [Master's Thesis on Tendermint](https://atrium.lib.uoguelph.ca/xmlui/handle/10214/9769)
  63. * [Original Whitepaper](https://tendermint.com/static/docs/tendermint.pdf)
  64. * [Tendermint Blog](https://blog.cosmos.network/tendermint/home)
  65. * [Cosmos Blog](https://blog.cosmos.network)
  66. ## Contributing
  67. Yay open source! Please see our [contributing guidelines](CONTRIBUTING.md).
  68. ## Versioning
  69. ### SemVer
  70. Tendermint uses [SemVer](http://semver.org/) to determine when and how the version changes.
  71. According to SemVer, anything in the public API can change at any time before version 1.0.0
  72. To provide some stability to Tendermint users in these 0.X.X days, the MINOR version is used
  73. to signal breaking changes across a subset of the total public API. This subset includes all
  74. interfaces exposed to other processes (cli, rpc, p2p, etc.), but does not
  75. include the in-process Go APIs.
  76. That said, breaking changes in the following packages will be documented in the
  77. CHANGELOG even if they don't lead to MINOR version bumps:
  78. - types
  79. - rpc/client
  80. - config
  81. - node
  82. Exported objects in these packages that are not covered by the versioning scheme
  83. are explicitly marked by `// UNSTABLE` in their go doc comment and may change at any time.
  84. Functions, types, and values in any other package may also change at any time.
  85. ### Upgrades
  86. In an effort to avoid accumulating technical debt prior to 1.0.0,
  87. we do not guarantee that breaking changes (ie. bumps in the MINOR version)
  88. will work with existing tendermint blockchains. In these cases you will
  89. have to start a new blockchain, or write something custom to get the old
  90. data into the new chain.
  91. However, any bump in the PATCH version should be compatible with existing histories
  92. (if not please open an [issue](https://github.com/tendermint/tendermint/issues)).
  93. ## Code of Conduct
  94. Please read, understand and adhere to our [code of conduct](CODE_OF_CONDUCT.md).