Fantom Technical Update 19

Published in

Fantom Foundation

2 min readApr 6, 2020

Fantom’s technical team has continued to work as usual despite these challenging times around the world. Our development has not slowed, and we are pleased to report that almost all community nodes have been upgraded from 0.5.0-rc1 to the most recent upgrade, 0.6.0-rc2.

Go-lachesis

Most validator nodes have upgraded from v0.5.0-rc1 to v0.6.0-rc2. The release notes and change logs of the upgrade can be found here: https://github.com/Fantom-foundation/go-lachesis/releases/tag/v0.6.0-rc.2
Web3.js console optimisation for Fantom API. Supported new methods, old / redundant method such as eth_mining, were removed: https://github.com/Fantom-foundation/go-lachesis/pull/449
Added documentation for Lachesis API, including differences and extensions to Web3.js: https://github.com/Fantom-foundation/go-lachesis/wiki/API
Developed integration tests for v0.6.0-rc2: https://github.com/Fantom-foundation/lachesis_launch/tree/master/integration_tests
Made integration tests compatible with all future releases: https://github.com/Fantom-foundation/lachesis_launch/pull/11
Optimized migration logs: https://github.com/Fantom-foundation/go-lachesis/pull/450
Improved test coverage for Lachesis “preque” package, achieving 91.7% coverage: https://github.com/Fantom-foundation/go-lachesis/pull/448
Improved test coverage for Lachesis “event check” sub-packages achieving the following coverage: https://github.com/Fantom-foundation/go-lachesis/pull/453

— basic_check: 93.2%
— epoch_check: 100%
— gas_power_check: 96.2%
— heavy_check: 81.2%
— parents_check: 91.7%

Improved tests for “crypto” package, achieving 83.3% coverage: https://github.com/Fantom-foundation/go-lachesis/pull/454
Marked release candidates for go-lachesis, fantom-sfc and, lachesis_launch

Go-lachesis as ABCI-Compatible

Split up EthAPIBackend to consensus-part and app-part: https://github.com/Fantom-foundation/go-lachesis/pull/446
Added Blocks info in app’s db (data duplication, only block’s number and time) and migrated database: https://github.com/Fantom-foundation/go-lachesis/pull/447
Moved receipt’s index to the app-side and migrated database: https://github.com/Fantom-foundation/go-lachesis/pull/451
Split up config of consensus’s database and app’s database: https://github.com/Fantom-foundation/go-lachesis/pull/451
Reviewed and merged PR#446, PR#447, PR#438, and PR#450

fLend

Created upgradable Oracle: https://github.com/devintegral4/flend/commit/22970a40c5283354687823d58ace58cad392ae87

Fantom-Metamask

Created Chrome extension build: https://github.com/Fantom-foundation/fantom-metamask/commit/0eadd596bcdc48b907fdfda64a34b7903502f33b
Added support for multiple Apollo clients: https://github.com/Fantom-foundation/fantom-metamask/commit/505ff93951a39a03ee5dad218a9ae6ab422dbf6e
Added support for random default Apollo provider: https://github.com/Fantom-foundation/fantom-metamask/commit/2360c343531ecf9d1d719db97332e2da7f328649
Added in ARIA helper functions and fantom-web3-wallet plugin (WIP): https://github.com/Fantom-foundation/fantom-metamask/commit/203c6f98591ac5c2a8ffa1162027ba29f386cea0
Made new structure of components and style (WIP): https://github.com/Fantom-foundation/fantom-metamask/commit/8b02dc758bb59a4a62bda6db53dfb712b0c937e1
Created basic form component and PrivateKeyForm: https://github.com/Fantom-foundation/fantom-metamask/commit/4ef8f03cd6dd08aac11a230942898f2282e2e81c
Installed, configured, and ran Prettier: https://github.com/Fantom-foundation/fantom-metamask/commit/e0eabeeca748af308cfcc37c97a84378351c8bd1

Fantom-Ledger

Added Security Policy declaration: https://github.com/Fantom-foundation/fantom-ledger/commit/bf35ba71af0cadf293947e1a808819275ec112aa
Added BIP44 path handling implementation: https://github.com/Fantom-foundation/fantom-ledger/commit/450c32bf5aa8454da308a95ca43184d803f090be
Added transaction signature APDU protocol: https://github.com/Fantom-foundation/fantom-ledger/commit/450c32bf5aa8454da308a95ca43184d803f090be

More commits can be found here: https://github.com/Fantom-foundation/fantom-ledger/commits/master?before=4cf0ae87779d4bb8fd220ddb22113b5638d2e6e3+35

Other Research and Development

A new website is under development with a friendly appearance showcasing more information about Fantom’s technologies, activities and accomplishments.
Continued weekly meetings with researchers at universities about their novel profiling tools and insights for smart contracts
Revised our manuscript of our new language for more secure smart contracts.