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August 12, 2020

Fantom Technical Update | 12th August 2020

Development

Since the last technical update, the team has made tremendous progress working on the Fantom DeFi stack, smart contracts for supply chain management, and a number of improvements for Lachesis.

 

Go-lachesis

 

  • Batches txs into event blocks more often: https://github.com/Fantom-foundation/go-lachesis/commit/3fe4ea7d3be2deac623bf1811e10334aeb2a379e
  • Allow fast exporting of Lachesis chain data: https://github.com/Fantom-foundation/go-lachesis/commit/536f3f3501ed804e20f1146733ec805dcaa269e9
  • Allow sending of txs that are automatically trusted for testing purposes: https://github.com/Fantom-foundation/go-lachesis/commit/96bc72a1e96787436cfd68212860a9b5834ad09f
  • Fixed flushable iterator: https://github.com/Fantom-foundation/go-lachesis/commit/2c2320572a0da0013ab35f632a34b193ac28e7d5
  • Batch transactions for public tx pool: https://github.com/Fantom-foundation/go-lachesis/commit/4bbcec6cbee3d126e63aa91ac3b5d452bdfc035e
  • Batch transactions with ETHAPIBackend: https://github.com/Fantom-foundation/go-lachesis/commit/c48d496f47f3619d35686c5680e296e16bf16287
  • TxPool.AddTxBatch(): https://github.com/Fantom-foundation/go-lachesis/commit/b6c2999a2dc8716a54af50b0bea308b63be6b8ba
  • No broadcast of batched txs: https://github.com/Fantom-foundation/go-lachesis/commit/2519a49e31413cdb3dbfdc9eb9cb66907feef28d
  • TxPool.Pending() skips incomplete batches: https://github.com/Fantom-foundation/go-lachesis/commit/c35cd10b331d544e68ecc6bb15426920ce09a760
  • evmcore.Transaction.batch: https://github.com/Fantom-foundation/go-lachesis/commit/93ef7151ffb7b78d43a180d04b205918a47dadae
  • evmcore.Transaction: https://github.com/Fantom-foundation/go-lachesis/commit/e23a9f7b853dff454decae45094366cd4e42b079
  • stateroots prints root hashes: https://github.com/Fantom-foundation/go-lachesis/commit/a9930cc66ee08ebb71f9d5823fec24ac6cbe7e00
  • stateroots command stub: https://github.com/Fantom-foundation/go-lachesis/commits/develop
  • evmcore/TxPool.AddTrusted() fix and test: https://github.com/Fantom-foundation/go-lachesis/commits/develop
  • Upgraded github.com/Fantom-foundation/go-ethereum to v1.9.8-ftm-0.9: https://github.com/Fantom-foundation/go-lachesis/commits/develop
  • Changed tx-storm script to send trusted transactions: https://github.com/Fantom-foundation/go-lachesis/commit/15b3a1f64e9ce05a317b259dc348c6fb4c6ce8e9
  • Updated tx-storm: https://github.com/Fantom-foundation/go-lachesis/commit/12a0097ffd64bce10670ccfb0d674da0eb2e818a
  • PrivateAccountAPI.SendTrustedTransaction() like the PublicTransaction PoolAPI.SendRawTransaction(): https://github.com/Fantom-foundation/go-lachesis/commit/a91afb9e90a5fee7d83c6813fbb31df0fe4ade30
  • Fixed datarace issue: https://github.com/Fantom-foundation/go-lachesis/commit/f89a39a9d9a3220c83c2fe5f30098988dc2f28dc
  • Added in monitoring dashboard for nodes running lachesis: https://github.com/Fantom-foundation/go-lachesis/commit/e110a88af56c97d3e8fd70deb4dab48bfc70c86b
  • SFC-2 tests and fixes: https://github.com/Fantom-foundation/go-lachesis/commit/b8d8952881718215dc8c4e7312ec3c0db8f6167d
  • Delegation lockup test fix: https://github.com/Fantom-foundation/go-lachesis/commit/dee9d08b7eb31a268c020ebdcc15057c4ff6683f
  • Delegation lockup test failed: https://github.com/Fantom-foundation/go-lachesis/commit/89c3afe11d1e00370aa91c3f6c6c1aaf68461fb1
  • Multidelegation db migration: https://github.com/Fantom-foundation/go-lachesis/commit/70e6920d90b675dd7a4dbc63d3eb62ca62102b7e
  • multidelegation support: https://github.com/Fantom-foundation/go-lachesis/commit/6cd703f7c67c038e6e96a38d6ca19ea0b80751d9
  • printEpochStats(): https://github.com/Fantom-foundation/go-lachesis/commit/05895d5dd4db4d091dcae545ff7baebb73b8b3e3
  • Upgraded delegators storage: https://github.com/Fantom-foundation/go-lachesis/commit/834ef8651baaed9c169d472c47185ebd109fa864
  • Able to check delegators rewards: https://github.com/Fantom-foundation/go-lachesis/commit/12e40c0fd85843f7f0973f1830b5a790f517ab70
  • TestSFC/Check_rewards_after_stake_lock fix proportions: https://github.com/Fantom-foundation/go-lachesis/commit/eae74d373a53bd0fbf7fb98c80312b6adff1fb24
  • Added in SFC logging: https://github.com/Fantom-foundation/go-lachesis/commit/045d585a9cbd896063dd69a169d5c3e368710d4a
  • Fixed nil pointer exception at TxPool: https://github.com/Fantom-foundation/go-lachesis/commit/a9adb0a70d77cca90078b844de192478647a85e4
  • Added in totalLockedAmount of SFC EpochSnapshot: https://github.com/Fantom-foundation/go-lachesis/commit/f0179ea3e485101fae574c586d306401329ae888
  • Fixed lockingEnabled condition: https://github.com/Fantom-foundation/go-lachesis/commit/50eb74ae6f8c5ede0b8dc50dc3b3fb58bac5a8e7
  • Tested lockingEnabled condition: https://github.com/Fantom-foundation/go-lachesis/commit/42628e829e6a69bdf0fd93cce5f0dacafc9fc586
  • Hardfork required: Increased of time to prune an offline validator: https://github.com/Fantom-foundation/go-lachesis/commit/5904861e2d3d8f8a00d4abdb54814f46805dc634
  • Tested stake lockup: https://github.com/Fantom-foundation/go-lachesis/commit/85374170fd4a9b886257ed8e93544545860c45b8

 

Fantom PWA Wallet – DeFi Integrations

 

  • Fixed deposit amounts and available balances: https://github.com/Fantom-foundation/Fantom-PWA-Wallet/commit/d29108291a01854221a44adbdc258cf7a33feb99
  • Correct available FTM balance in fMint: https://github.com/Fantom-foundation/Fantom-PWA-Wallet/commit/7db83cb6692c77e4b54c9d090a7546f47ae1a0ad
  • Make buttons from some links: https://github.com/Fantom-foundation/Fantom-PWA-Wallet/commit/af66ae410bfa4decb55e2c30ebb0d13124a9306d
  • Corrected borrow limit: https://github.com/Fantom-foundation/Fantom-PWA-Wallet/commit/a78dfcba301c4832d2742f65eff53b501493c2cb
  • Added available balance to DefiTokenList: https://github.com/Fantom-foundation/Fantom-PWA-Wallet/commit/7ca6cbed53855012f86f48e14a4b9da8c935c4ae
  • Adjusted ftrade confirmation process to keep selected tokens: https://github.com/Fantom-foundation/Fantom-PWA-Wallet/commit/c01049f69bf5fd8a66e313a1ffa39c8f26e4d88f
  • Adjusted borrow and deposit confirmation process to keep selected token: https://github.com/Fantom-foundation/Fantom-PWA-Wallet/commit/a92edf7145eb0a7d8b82b7c56b0878bb6745bcac
  • Fixed minimal collateral value: https://github.com/Fantom-foundation/Fantom-PWA-Wallet/commit/a33a05b2e5e2620b0f728372a96158ee9ae8cb95
  • Created SuplyToLiquidityList component: https://github.com/Fantom-foundation/Fantom-PWA-Wallet/commit/cd2085880b066fc4d9262871eb3519f6bcb46629
  • Allowed FUSD to be tradable: https://github.com/Fantom-foundation/Fantom-PWA-Wallet/commit/048b4fce78a30ebbfd1bd7d9e615dcdbfbe9df6b
  • WIP: Created DefiFLend view: https://github.com/Fantom-foundation/Fantom-PWA-Wallet/commit/62a23ecff54cc7439f178caeff6251ae3d29cc7e
  • Created DefiManageDeposit confirmation process: https://github.com/Fantom-foundation/Fantom-PWA-Wallet/commit/51c334f6ac15042f6c46539b70e9fef80ade7fc6
  • Created DefiManageDeposit view: https://github.com/Fantom-foundation/Fantom-PWA-Wallet/commit/657330d2ba4766b38b8c59259e30303b6cb58dfe
  • Merged branch ‘feature/defi-mint-burn’: https://github.com/Fantom-foundation/Fantom-PWA-Wallet/commit/189b466cf72534a90ecb31d4941d9c3e7305801b
  • WIP: Created DefiFTrade view: https://github.com/Fantom-foundation/Fantom-PWA-Wallet/commit/873b615a4ec2e12cae3d938e65b1aefa61e30db7
  • Created DefiBorrowConfirmation component: https://github.com/Fantom-foundation/Fantom-PWA-Wallet/commit/7a28b7c438c5caa1dec52a2aba8fdb869e1545cd
  • Added request to defi account: https://github.com/Fantom-foundation/Fantom-PWA-Wallet/commit/9c13ce6fcb9e9272924376dd190188cf444a52a5
  • Created DefiFLend and DefiManageBorrowView views: https://github.com/Fantom-foundation/Fantom-PWA-Wallet/commit/3b5b5d3326c578b7086abf7762898b9e57365d0a
  • Created TransactionRejectMessageView component: https://github.com/Fantom-foundation/Fantom-PWA-Wallet/commit/2a64cd4719a543616e0a5bfe1a182f18b6793e7e

 

Fantom – fMint

 

  • Optimise errors to lower gas burning: https://github.com/Fantom-foundation/Fantom-FMint/commit/309e7fe1c172e011370902bd94ed9d0d58810977
  • Added detailed description of the contract: https://github.com/Fantom-foundation/Fantom-FMint/commit/033a9d49787ee5f5ec5418e7f1ff38ce81e588cb
  • Fixed the fee digits correction value: https://github.com/Fantom-foundation/Fantom-FMint/commit/135cbae815c2f45412fe3fed0f7fa6237811a5a0
  • Added detailed compiler configuration: https://github.com/Fantom-foundation/Fantom-FMint/commit/c599ed33544cce7a96025b4341c8a2e8fdedd8a0
  • Initial fMint contract commit: https://github.com/Fantom-foundation/Fantom-FMint/commit/bee10fd43beec913eddd4c49c64759e0d6ec1270

 

Fantom-SFC

 

  • SFC can change offlinePenaltyThreshold: https://github.com/Fantom-foundation/fantom-sfc/commit/a1a8eab3b8ef4e8cce61dc3d34ba4d35d4ba249f
  • Restored multi-delegation tests: https://github.com/Fantom-foundation/fantom-sfc/commit/06696857b6cb2685a0cf0539c3a1dc6801ea768b
  • Restored multi-delegation feature: https://github.com/Fantom-foundation/fantom-sfc/commit/5ef83f58c2a1aa1fce6a6bab3cdf590b77b3a952
  • Tests: test lockup rewards after full withdrawal: https://github.com/Fantom-foundation/fantom-sfc/commit/8e2a3793a15abbe5e56244b8f2bf18629682ccd4
  • Tests: test lockup rewards after partial withdrawal: https://github.com/Fantom-foundation/fantom-sfc/commit/2aade5cc7337733cd5b65f60ced2e38118d1486e
  • Tests: test lockup rewards after stake increasing: https://github.com/Fantom-foundation/fantom-sfc/commit/c998dc96c9698ed629f153eb660fcc38246f2e7e
  • Tests: check partial delegation withdrawal amount after penalty: https://github.com/Fantom-foundation/fantom-sfc/commit/45e4aa1fab8fc37b49403d5d2c9a5e1ebe46cbba
  • Tests: check delegation withdrawal amount after penalty: https://github.com/Fantom-foundation/fantom-sfc/commit/4964a00339da3bc754d3188af56167419883dc49
  • Tests: test delegation penalty counter: https://github.com/Fantom-foundation/fantom-sfc/commit/da48318bc7d8ea1975246c2c71547d2799777779
  • Don’t allow to lose previous lockup rewards: https://github.com/Fantom-foundation/fantom-sfc/commit/959577264f385610624ef0becd2640235a916079
  • Tests: added test for lockup rewards claiming: https://github.com/Fantom-foundation/fantom-sfc/commit/0a6a3476635c37f2363dfa1965e077162e52bc90
  • Tests: added testcase for penalty > delegated stake: https://github.com/Fantom-foundation/fantom-sfc/commit/859b9f6c282c6a1f66578f5b870cefd4f1aa6f95
  • Tests: fixed delegation lockup test: https://github.com/Fantom-foundation/fantom-sfc/commit/4191a422b17cdd25ac00c44227b584b582fa9c5e
  • Tests: fixed stake lockup test: https://github.com/Fantom-foundation/fantom-sfc/commit/e7430b5bf00f812d67507adb080a0ebb657b4723
  • Tests: fixed calcRawValidatorEpochReward test: https://github.com/Fantom-foundation/fantom-sfc/commit/203974144cf1e7a0df8e8f9e9b3ca42739a3cfaa
  • Tests: fixed non-lockup tests createDelegation, claimDelegationRewards, prepareToWithdrawDelegation, withdrawDelegation: https://github.com/Fantom-foundation/fantom-sfc/commit/8436275473ea732c8c0a2e85e70c6c99f3fc6323
  • Tests: fixed delegator lockup penalty tests: https://github.com/Fantom-foundation/fantom-sfc/commit/8704eff97a663f6a27d933f9e6075c84d8dbf561
  • Sync amounts with node after penalty was applied: https://github.com/Fantom-foundation/fantom-sfc/commit/adc4be84a85f4da2af63096efeb48cd6662c1d85
  • Don’t count penalty for epochs where delegator isn’t locked up: https://github.com/Fantom-foundation/fantom-sfc/commit/db2023a19c159ab97b0a72c689e740d057811082
  • Adjusted locked and unlocked rewards: https://github.com/Fantom-foundation/fantom-sfc/commit/ec0104fa05c891eedf59e1702e85058d29a5a793
  • Fixed infinite loop in lockup penalty function: https://github.com/Fantom-foundation/fantom-sfc/commit/3eaf7da6465fce6485a7d3f99d80813d662e11a5
  • Fixed locked stake withdrawal: https://github.com/Fantom-foundation/fantom-sfc/commit/438dcb9bd6b856394fc851cda0dacba0f3856791

 

Data-hashing-authentication

 

  • Simplify PIN to PID reference to save gas: https://github.com/Fantom-foundation/data-hashing-authentication/commit/96ada643beffeb459aa42f5375269e6da42afa2a
  • Split PIN management from products data: https://github.com/Fantom-foundation/data-hashing-authentication/commit/8ca28dcbab5d0a1cd6f394203835b28283de33bf
  • Added multiple authorized scanner addresses management: https://github.com/Fantom-foundation/data-hashing-authentication/commit/4fe1dd323d60ea59190d759297a378df95c40ba4
  • Do not track system files on repo: https://github.com/Fantom-foundation/data-hashing-authentication/commit/639c15658bdfc4420438954ecf6acd7ae4fe3b87
  • Added input structure experimental support: https://github.com/Fantom-foundation/data-hashing-authentication/commit/205833beee170e5a14f9f2ec6c405ffbf7aa1834
  • Added product invalidation support: https://github.com/Fantom-foundation/data-hashing-authentication/commit/1ceb3e6d41936d1cc6da87aed3673792f6e48536
  • Updated the contract to target API structure: https://github.com/Fantom-foundation/data-hashing-authentication/commit/65bea51a787735b895b89ed340ed6375a3e49178

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