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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://godoc.org/github.com/tendermint/tendermint)
  8. [![Go version](https://img.shields.io/badge/go-1.12.0-blue.svg)](https://github.com/moovweb/gvm)
  9. [![riot.im](https://img.shields.io/badge/riot.im-JOIN%20CHAT-green.svg)](https://riot.im/app/#/room/#tendermint:matrix.org)
  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. | Branch | Tests | Coverage |
  13. | ------ | ---------------------------------------------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------ |
  14. | 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) |
  15. Tendermint Core is Byzantine Fault Tolerant (BFT) middleware that takes a state transition machine - written in any programming language -
  16. and securely replicates it on many machines.
  17. For protocol details, see [the specification](/docs/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. NOTE: The master branch is now an active development branch (starting with `v0.32`). Please, do not depend on it and
  22. 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,
  28. please [contact us](mailto:partners@tendermint.com) and [join the chat](https://riot.im/app/#/room/#tendermint:matrix.org).
  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 [SECURITY.md](SECURITY.md)
  33. ## Minimum requirements
  34. | Requirement | Notes |
  35. | ----------- | ------------------ |
  36. | Go version | Go1.11.4 or higher |
  37. ## Documentation
  38. Complete documentation can be found on the [website](https://tendermint.com/docs/).
  39. ### Install
  40. See the [install instructions](/docs/introduction/install.md)
  41. ### Quick Start
  42. - [Single node](/docs/introduction/quick-start.md)
  43. - [Local cluster using docker-compose](/docs/networks/docker-compose.md)
  44. - [Remote cluster using terraform and ansible](/docs/networks/terraform-and-ansible.md)
  45. - [Join the Cosmos testnet](https://cosmos.network/testnet)
  46. ## Contributing
  47. Please abide by the [Code of Conduct](CODE_OF_CONDUCT.md) in all interactions,
  48. and the [contributing guidelines](CONTRIBUTING.md) when submitting code.
  49. Join the larger community on the [forum](https://forum.cosmos.network/) and the [chat](https://riot.im/app/#/room/#tendermint:matrix.org).
  50. To learn more about the structure of the software, watch the [Developer
  51. Sessions](https://www.youtube.com/playlist?list=PLdQIb0qr3pnBbG5ZG-0gr3zM86_s8Rpqv)
  52. and read some [Architectural
  53. Decision Records](https://github.com/tendermint/tendermint/tree/master/docs/architecture).
  54. Learn more by reading the code and comparing it to the
  55. [specification](https://github.com/tendermint/tendermint/tree/develop/docs/spec).
  56. ## Versioning
  57. ### Semantic Versioning
  58. Tendermint uses [Semantic Versioning](http://semver.org/) to determine when and how the version changes.
  59. According to SemVer, anything in the public API can change at any time before version 1.0.0
  60. To provide some stability to Tendermint users in these 0.X.X days, the MINOR version is used
  61. to signal breaking changes across a subset of the total public API. This subset includes all
  62. interfaces exposed to other processes (cli, rpc, p2p, etc.), but does not
  63. include the in-process Go APIs.
  64. That said, breaking changes in the following packages will be documented in the
  65. CHANGELOG even if they don't lead to MINOR version bumps:
  66. - crypto
  67. - types
  68. - rpc/client
  69. - config
  70. - node
  71. - libs
  72. - bech32
  73. - common
  74. - db
  75. - errors
  76. - log
  77. Exported objects in these packages that are not covered by the versioning scheme
  78. are explicitly marked by `// UNSTABLE` in their go doc comment and may change at any
  79. time without notice. Functions, types, and values in any other package may also change at any time.
  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.
  86. However, any bump in the PATCH version should be compatible with existing histories
  87. (if not please open an [issue](https://github.com/tendermint/tendermint/issues)).
  88. For more information on upgrading, see [UPGRADING.md](./UPGRADING.md)
  89. ## Resources
  90. ### Tendermint Core
  91. For details about the blockchain data structures and the p2p protocols, see the
  92. [Tendermint specification](/docs/spec).
  93. For details on using the software, see the [documentation](/docs/) which is also
  94. hosted at: https://tendermint.com/docs/
  95. ### Tools
  96. Benchmarking and monitoring is provided by `tm-bench` and `tm-monitor`, respectively.
  97. Their code is found [here](/tools) and these binaries need to be built seperately.
  98. Additional documentation is found [here](/docs/tools).
  99. ### Sub-projects
  100. - [Amino](http://github.com/tendermint/go-amino), reflection-based proto3, with
  101. interfaces
  102. - [IAVL](http://github.com/tendermint/iavl), Merkleized IAVL+ Tree implementation
  103. - [Tm-cmn](http://github.com/tendermint/tm-cmn), Commonly used libs across Tendermint & Cosmos repos
  104. ### Applications
  105. - [Cosmos SDK](http://github.com/cosmos/cosmos-sdk); a cryptocurrency application framework
  106. - [Ethermint](http://github.com/cosmos/ethermint); Ethereum on Tendermint
  107. - [Many more](https://tendermint.com/ecosystem)
  108. ### Research
  109. - [The latest gossip on BFT consensus](https://arxiv.org/abs/1807.04938)
  110. - [Master's Thesis on Tendermint](https://atrium.lib.uoguelph.ca/xmlui/handle/10214/9769)
  111. - [Original Whitepaper](https://tendermint.com/static/docs/tendermint.pdf)
  112. - [Blog](https://blog.cosmos.network/tendermint/home)