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iroha's Introduction

Welcome!

What is Hyperledger Iroha?

License CII Best Practices Build Status

Iroha is a straightforward distributed ledger technology (DLT), inspired by Japanese Kaizen principle โ€” eliminate excessiveness (muri). Iroha has essential functionality for your asset, information and identity management needs, at the same time being an efficient and trustworthy crash fault-tolerant tool for your enterprise needs.

Check the overview page of our documentation. Here is a YouTube channel where we upload meetings and explanatory videos - check them out!

Iroha logo

Iroha has the following features:

  1. Creation and management of custom fungible assets, such as currencies, kilos of gold, etc.
  2. Management of user accounts
  3. Taxonomy of accounts based on domains in the system
  4. The system of rights and verification of user permissions for the execution of transactions and queries in the system
  5. Validation of business rules for transactions and queries in the system
  6. Multisignature transactions

Iroha is Crash Fault Tolerant and has its own consensus algorithm - YAC

Documentation

Our documentation is hosted at ReadTheDocs service here: http://iroha.readthedocs.io. We have documentation in several languages available and you are welcome to contribute on POEditor website!

Here is the build status of different translations

Build Status English
Documentation Status
German
Documentation Status
Spanish
Documentation Status
French
Documentation Status
Japanese
Documentation Status
Korean
Documentation Status
Dutch
Documentation Status
Portuguese
Documentation Status
Russian
Documentation Status
Ukrainian
Documentation Status
Simplified Chinese
Documentation Status

How to explore Iroha really fast?

Check getting started section in your version of localized docs to start exploring the system.

How to build Iroha?

Use build guide, which might be helpful if you want to modify the code and contribute.

Is there SDK available?

Yes, in Java, Python, Javascript and iOS.

Are there any example applications?

Android point app and JavaScript wallet.

Also do not forget to check out The Borsello App โ€“ it is a wallet for Android & iOS along with a web browser application contributed by Claudio. It is based on JS Wallet but is up-to-date.

Want to help us develop Iroha?

That's great! Check out this document

Need help?

  • Join Telegram chat or Hyperledger RocketChat where the maintainers, contributors and fellow users are ready to help you. You can also discuss your concerns and proposals and simply chat about Iroha there or in Gitter Join the chat at https://gitter.im/hyperledger-iroha/Lobby
  • Submit issues and improvement suggestions via Hyperledger Jira
  • Subscribe to our mailing list to receive the latest and most important news and spread your word within Iroha community

License

Iroha codebase is licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.

Iroha documentation files are made available under the Creative Commons Attribution 4.0 International License (CC-BY-4.0), available at http://creativecommons.org/licenses/by/4.0/

iroha's People

Contributors

alexey-n-chernyshov avatar alexmat2on avatar bakhtin avatar bulatsaif avatar claudiocandio avatar dependabot[bot] avatar ericcurtin avatar exctues avatar ionagamed avatar ivantyulyandin avatar kogeler avatar lebdron avatar liralemur avatar luckychess avatar mboldyrev avatar muratovv avatar neewy avatar ortyomka avatar ryjones avatar turuslan avatar x3medima17 avatar yash2code avatar

Watchers

 avatar

Forkers

alexeykarss

iroha's Issues

Adding a new node to the network. Chain validation cannot be completed

Environment: LOCAL
MacOS
Version
Branch: feature/keep-wsv-data
Commit: 13b9da3
reproduced in "live version":
Branch: master
Commit: 1063815
reproduced in different configuration:"1+1", "2+1", "3+1"

Detail description:
If the height of a chain is more than a few hundred blocks, when adding a new node in the network - chain validation node cannot be completed

Precondition:
Deployed network with 1 node iroha (node "A")
Height block chain more 300
Scenario:

  1. Deploy another node of iroha (node "B")
  2. Add node "B" in network with node "A"(AddPeer)

Expected result:
Successful addition of node B, chain height is synchronized.
Actual result:
During the validation of a chain at ~200 block, a problem arises, after which the validation starts again.

log:
logs_with_configuration_1+1.zip

Table top_block_info is not updated.

Environment:
LOCAL
MacOS
Version
Branch: feature/keep-wsv-data
Commit: 2e11427
Settings:
settings.zip

Detail description:
When a new block is commit, the table "top_block_info" is not updated.

Scenario:

  1. Start new network of iroha containing one node
  2. Check database - in the table "top_block_info" added entry
  3. Send some transaction to Iroha, until the height of the block chain changes.
  4. Check database - table "top_block_info"

Expected result:
Table "top_block_info" updated after every new block committed
Actual result:
Table "top_block_info" don't update

Log:
iroha_log.txt

That's why the node won't start again with --reuse_state.

[Irohad/Storage/MutableStorageImpl]: Applying block: height 2, hash acee50a0a28cb1772cac8b0690eda643e0468b2840651ea5b3818222afd2ab1e
[critical][Init]: Irohad startup failed: Cannot apply block!

BD screen!

image

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