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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](
  8. https://camo.githubusercontent.com/915b7be44ada53c290eb157634330494ebe3e30a/68747470733a2f2f676f646f632e6f72672f6769746875622e636f6d2f676f6c616e672f6764646f3f7374617475732e737667
  9. )](https://godoc.org/github.com/tendermint/tendermint)
  10. [![Go version](https://img.shields.io/badge/go-1.12.0-blue.svg)](https://github.com/moovweb/gvm)
  11. [![riot.im](https://img.shields.io/badge/riot.im-JOIN%20CHAT-green.svg)](https://riot.im/app/#/room/#tendermint:matrix.org)
  12. [![license](https://img.shields.io/github/license/tendermint/tendermint.svg)](https://github.com/tendermint/tendermint/blob/master/LICENSE)
  13. [![](https://tokei.rs/b1/github/tendermint/tendermint?category=lines)](https://github.com/tendermint/tendermint)
  14. Branch | Tests | Coverage
  15. ----------|-------|----------
  16. 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)
  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. For detailed analysis of the consensus protocol, including safety and liveness proofs,
  21. see our recent paper, "[The latest gossip on BFT consensus](https://arxiv.org/abs/1807.04938)".
  22. ## Releases
  23. NOTE: The master branch is now an active development branch (starting with `v0.32`). Please, do not depend on it and
  24. use [releases](https://github.com/tendermint/tendermint/releases) instead.
  25. Tendermint is being used in production in both private and public environments,
  26. most notably the blockchains of the [Cosmos Network](https://cosmos.network/).
  27. However, we are still making breaking changes to the protocol and the APIs and have not yet released v1.0.
  28. See below for more details about [versioning](#versioning).
  29. In any case, if you intend to run Tendermint in production,
  30. please [contact us](mailto:partners@tendermint.com) and [join the chat](https://riot.im/app/#/room/#tendermint:matrix.org).
  31. ## Security
  32. To report a security vulnerability, see our [bug bounty
  33. program](https://hackerone.com/tendermint)
  34. For examples of the kinds of bugs we're looking for, see [SECURITY.md](SECURITY.md)
  35. ## Minimum requirements
  36. Requirement|Notes
  37. ---|---
  38. Go version | Go1.11.4 or higher
  39. ## Documentation
  40. Complete documentation can be found on the [website](https://tendermint.com/docs/).
  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. and the [contributing guidelines](CONTRIBUTING.md) when submitting code.
  51. Join the larger community on the [forum](https://forum.cosmos.network/) and the [chat](https://riot.im/app/#/room/#tendermint:matrix.org).
  52. To learn more about the structure of the software, watch the [Developer
  53. Sessions](https://www.youtube.com/playlist?list=PLdQIb0qr3pnBbG5ZG-0gr3zM86_s8Rpqv)
  54. and read some [Architectural
  55. Decision Records](https://github.com/tendermint/tendermint/tree/master/docs/architecture).
  56. Learn more by reading the code and comparing it to the
  57. [specification](https://github.com/tendermint/tendermint/tree/develop/docs/spec).
  58. ## Versioning
  59. ### Semantic Versioning
  60. Tendermint uses [Semantic Versioning](http://semver.org/) to determine when and how the version changes.
  61. According to SemVer, anything in the public API can change at any time before version 1.0.0
  62. To provide some stability to Tendermint users in these 0.X.X days, the MINOR version is used
  63. to signal breaking changes across a subset of the total public API. This subset includes all
  64. interfaces exposed to other processes (cli, rpc, p2p, etc.), but does not
  65. include the in-process Go APIs.
  66. That said, breaking changes in the following packages will be documented in the
  67. CHANGELOG even if they don't lead to MINOR version bumps:
  68. - crypto
  69. - types
  70. - rpc/client
  71. - config
  72. - node
  73. - libs
  74. - bech32
  75. - common
  76. - db
  77. - errors
  78. - log
  79. Exported objects in these packages that are not covered by the versioning scheme
  80. are explicitly marked by `// UNSTABLE` in their go doc comment and may change at any
  81. time without notice. Functions, types, and values in any other package may also change at any time.
  82. ### Upgrades
  83. In an effort to avoid accumulating technical debt prior to 1.0.0,
  84. we do not guarantee that breaking changes (ie. bumps in the MINOR version)
  85. will work with existing tendermint blockchains. In these cases you will
  86. have to start a new blockchain, or write something custom to get the old
  87. data into the new chain.
  88. However, any bump in the PATCH version should be compatible with existing histories
  89. (if not please open an [issue](https://github.com/tendermint/tendermint/issues)).
  90. For more information on upgrading, see [UPGRADING.md](./UPGRADING.md)
  91. ## Resources
  92. ### Tendermint Core
  93. For details about the blockchain data structures and the p2p protocols, see the
  94. [Tendermint specification](/docs/spec).
  95. For details on using the software, see the [documentation](/docs/) which is also
  96. hosted at: https://tendermint.com/docs/
  97. ### Tools
  98. Benchmarking and monitoring is provided by `tm-bench` and `tm-monitor`, respectively.
  99. Their code is found [here](/tools) and these binaries need to be built seperately.
  100. Additional documentation is found [here](/docs/tools).
  101. ### Sub-projects
  102. * [Amino](http://github.com/tendermint/go-amino), reflection-based proto3, with
  103. interfaces
  104. * [IAVL](http://github.com/tendermint/iavl), Merkleized IAVL+ Tree implementation
  105. ### Applications
  106. * [Cosmos SDK](http://github.com/cosmos/cosmos-sdk); a cryptocurrency application framework
  107. * [Ethermint](http://github.com/cosmos/ethermint); Ethereum on Tendermint
  108. * [Many more](https://tendermint.com/ecosystem)
  109. ### Research
  110. * [The latest gossip on BFT consensus](https://arxiv.org/abs/1807.04938)
  111. * [Master's Thesis on Tendermint](https://atrium.lib.uoguelph.ca/xmlui/handle/10214/9769)
  112. * [Original Whitepaper](https://tendermint.com/static/docs/tendermint.pdf)
  113. * [Blog](https://blog.cosmos.network/tendermint/home)