Imported from https://github.com/Synthetixio/synthetix/releases
Published: Jan 19, 2022
- SIP-200: Fix the FeePool contract such that only correctly authorized addresses can call
Published: Dec 15, 2021
- SIP-188: Add sETHBTC synth on L1: Adds a synth to L1 that mirrors the ratio of prices between ETH and BTC.
- SIP-194: Fix Liquidations on L2: Fixes an error in liquidations that didn't allow L2 liquidations to function correctly.
- SIP-195: L2 Multi ETH Collateral Loans: Allow users to borrow synthetic assets against ETH on L2.
No audit required as no new code developed in this release.
Published: Dec 3, 2021
- SIP-192: Fee Pool Accounting Error Fix and Reimbursement: Fixes an error where fees from WrapperFactory are double-counted.
Published: Nov 23, 2021
Target: L1 & L2
- SIP-167 L2 Bridged Governance. This SIP creates a bridge to connect L2 contracts to an L1 Gnosis Safe. The bridge will allow the ProtocolDAO to execute actions on L2 contracts using the same mechanism used on L1.
Published: Nov 17, 2021
Target: L1 only
- SIP-120: Atomic Exchange Function: This SIP creates a new exchange function allowing users to atomically exchange synths via TWAP Uniswap oracles secured by Chainlink oracles.
Published: Oct 28, 2021
Target: L2 (OVM) only
- SIP-182 The Wrapper Factory
Published: Oct 20, 2021
- SIP-187 Fix Partial Update in Debt Cache
Published: Oct 12, 2021
- SIP-135 L2 Shortable Synths
Published: Sep 20, 2021
- SIP-158 Deprecate Inverse Synths: This SIP will deprecate all iSynths (which have already been frozen for some time) in favor of synth shorting.
- SIP-169 Deprecate Low Volume L1 Synths: Deprecates a number of synths with relatively low usage on L1 (see here for more details).
Published: Sep 14, 2021
- SIP-142 Deprecating EtherCollateral loans: Will officially deprecate old loan contracts that have already been wound down.
- SIP-145 Debt Cache Event Consistency: Fixes an incorrect debt cache event value.
- SIP-170 Inflation Diversion for L2 Incentives: Directs part of SNX inflation to L2 staking rewards.
- SIP-174 Redeem Deprecated Synths: Creates a synth redeemer contract that allows holders of deprecated synths to redeem them for sUSD at a frozen price from the time of deprecation. Note that no synths will be deprecated during this release.
Published: Jul 1, 2021
- SIP-138: Update Volume Tracking Event
- SIP-139: Allow owner to reset the decentralized circuit breaker pricing
- SIP-140: Allow Exchange Into Origin Address
- SIP-151: Migration Contracts for Upgrades
Published: May 13, 2021
Published: May 11, 2021
- SIP-116 Upgrading deposit and withdrawal interface to Optimism's new interfaces
- SIP-117 Support for exchanging on L2
- SIP-118 Support for conditional fee reclamation
Published: Apr 29, 2021
(No audit required, no new contract changes)
Published: Apr 22, 2021
- SIP 114: Adding FAANG Synths
- SIP 107: Add CRV crypto synth
- SIP 126: New ERC-20 Synths
- SIP 127: Minimal Proxies for Virtual Synths
Published: Mar 24, 2021
- SIP-113 Re-enable sKRW (Korean Won)
(No audit required, no new contract changes)
Published: Feb 11, 2021
- SIP-110: Adding sTSLA Synth
(No audit required, no new contract changes)
Published: Feb 4, 2021
- SIP-95: Delist s/iBCH
- SIP-101: New crypto Synths
- SIP-108: Shorting rewards
- SIP-109: Add Synth exchange suspension support
Published: Jan 17, 2021
(No blog post)
- SIP-106 L2 Debt Register fix
No audit - reused older audited contract to fix debt issue on L2 caused by skewed pool from initial test involving 1 wei.
Published: Jan 15, 2021
- SIP-60: New Escrow Contract & Migration
- SIP-102 Support SNX on L2 with Optimism
- SIP-105 Multi-collateral Liquidation Bug Fix
Published: Dec 24, 2020
- SIP-97: Multi-collateral loans — This SIP allows users to borrow Synths against ETH and ERC20 collateral. Initially, the system will support borrowing sUSD or sETH against ETH, and sUSD or sBTC against renBTC.
- SIP-100: Resolver and cache improvements — Improves the ‘AddressResolver’ to improve protocol upgrades, reduce gas of deployments and further decentralization.
- SIP-103: sUSD shorts — This SIP allows users to short Synths against sUSD. This mechanism provides an alternative to iSynths for users seeking inverse price exposure. While these positions require collateral, they return the sUSD proceeds of the sale to the shorter, which can then be deployed productively throughout DeFi.
Published: Dec 1, 2020
SIP-98 Re-implement double exchange fee rate on swing trades
Audit: https://iosiro.com/audits/synthetix-shaula-release-smart-contract-audit (report combined with Shaula release)
Published: Nov 13, 2020
- SIP-94 Virtual Synth Fix to Ensure Settlement Is Connected
Audit: https://iosiro.com/audits/synthetix-mimosa-release-smart-contract-audit (bundled with Mimosa report)
Published: Nov 12, 2020
- SIP-89 Virtual Synths
- SIP-91 Debt Cache Contract
- SIP-92 Historical iSynths Pricing Tracks When Last Frozen
Published: Oct 8, 2020
- SIP-83: Total Issued Synths (Debt pool) Snapshots
- SIP-88: ExchangeRates patch - Chainlink aggregator V2V3
- SCCP-51: Update sDEFI index
- Resume synths paused previously by SIP-84
Published: Sep 24, 2020
- SIP-77: Staking rewards contract
- SIP-85: EtherCollateral for sUSD Loans
- SIP-86: SIP 86: ExchangeRates Chainlink Aggregator V2V3
- SIP-87: Add iETH incentive to RewardsDistribution
Published: Sep 1, 2020
- SIP-36: Chainlink Phase 2
- SIP-63: Trading and volume incentives
- SIP-64: Flexible contract storage
- SIP-75: Freezing iSynths with public function with SNX reward
- SIP-76: Chainlink warning flags integration
- SIP-78: Reset iSynth does not trigger circuit breaker from SIP-65
- SIP-84: Pause Synths Below Open Interest Threshold
- SCCP-43: As part of the Pollux deployment and transition to Chainlink Oracles a number of SCCP controlled variables need to be updated to improve trading UX and reduce front-running attacks.
Published: Jul 30, 2020
- SIP-54 : Limit Orders
- SIP-65 : Decentralized circuit breaker
- SIP-69 : New Index Synths
- SIP-58 : Emit individual Reclaim and Rebate events
- SIP-44 : Settlement Improvements — Minor modifications to the settlement process for exchange rates deployments.
- SCCP-27 : Ether collateral second trial — Now that the first Ether collateral trial is complete, we will be launching a second trial that incorporates the collateralization ratio update from 150% to 125%.
Published: Jul 20, 2020
Implements most of SIP-71:
- Allow market creators to cancel a market if no bids have been placed on it yet
- Allow market creators to disable bid withdrawals at market creation
- Emit bid events for the initial capital at market creation
- Fix a bug that prevents creators from exercising their options before expiry under certain circumstances
Published: Jul 1, 2020
- SIP-66 Reduce gas of SNX transfers for non-stakers
- SCCP-31 Increase Commodity Fees
Published: Jun 30, 2020
Published: Jun 5, 2020
Published: Mar 31, 2020
SIP-9 One week claim window
SIP-10 Improved Delegation Powers
SIP-21 Deprecate swing fee
SIP-44 System & Synth Disabling
SIP-46 Address resolver gas optimizations
SIP-47 Prevent empty exchanges
Published: Feb 28, 2020
- SIP-40: Frontminting prevention (read IOSIRO's audit report here)
- SIP-41: ProtocolDAO phase zero
- SIP-42: Gas optimisations
Published: Feb 20, 2020
- SIP-31: sETH pool automatic rewards — SNX rewards for providing sETH/ETH liquidity on Uniswap are currently paid out manually using a multisig. Using an automated system will be far more efficient and reduce the possibility of human error. Liquidity providers will now have to claim their rewards from a smart contract (no timeframe requirement).
- SIP-33: Removal of XDRs — The XDR Synth was originally used as the base unit of account, but sUSD now fills that role. Taking out XDR will simplify several functions for users, particularly the payment of trading fees.
- SIP-35: Skinny Ether collateral — There has been significant demand from the crypto community for ETH to be enabled as collateral in Synthetix. The three-month trial will reduce friction for new traders.
- SIP-37: Fee reclamations and rebates — This SIP implements anti-frontrunning measures, ensuring that traders cannot profit from Oracle latency.
- SIP-38: Charge fees during purge — This SIP adds a trading fee to when a Synth holder gets purged out of a Synth, to prevent users from camping out in these Synths without paying their fair share of fees. Synthetix.Exchange v2 — We are launching a new version of Synthetix.Exchange. V2 will move to production from beta as part of the Achernar release.
- SIP-43: Adding an
AddressResolvercontract for better inter-contract communication within Synthetix
- SCCP-11: Reduce trading fee to 0.3% — As part of the fee reclamation release, we’ll be reducing the trading fee back down to 30bps.
- SCCP-12: Reactivate previously deactivated Synths — s/iXTZ, s/iBNB, and s/iLTC were all previously deactivated as they were being targeted by frontrunners, but we're reinstating them in the Achernar release.
- SCCP-13: Reinstate fee claim buffer to 750% from 500% — The requirement to claim fees was reduced from 750% to 500% to allow stakers to not get hit by the temporary fee increase.
Published: Dec 18, 2019
Published: Dec 12, 2019
DappMaintenance contract (v2.15.0)¶
Published: Dec 9, 2019
DappMaintenancecontract is here to keep a state of the dApps (Mintr and Synthetix Exchange) in order to check if they are supposed to be up or down.
Published: Nov 27, 2019
Published: Nov 21, 2019
Published: Nov 8, 2019
- SIP-21: This will double the exchange fee when changing between an s-Synth and an i-Synth, or vice versa, e.g. sTRX <> iBTC; or iTRX <> sBTC. The only Synth excluded is sUSD. There is already a leveraged benefit on the inverse Synths and currently being able to trade short <> long in a volatile market is a continuous advantage to front runners. The normal exchange fee rate is 30 bips (0.3%). However, it is currently 50 bips, which would make the swing trade 100 bips. When it is restored to 30 bips it would then only be 60 bips on a swing trade.
- SIP-25: This SIP will decouple the gas limiter from the oracle. Currently, any invocation of the setGasPriceLimit() function has to be mined before a price update can be mined on-chain. This creates an unnecessary delay in serving timely oracle updates. This proposal is to change this access to setting the gasPriceLimit to a separate address, controlled by a setter only callable by the owner.
- SIP-26: This is a bug fix that would reduce the gas estimation of trading SNX via Uniswap down from 900K to 100K.
- SCCP-5: This change will divert 5% of the weekly SNX inflation into the arb pool — an increase from 2%. This is intended to provide a tighter sETH peg.
- SCCP-6: This SCCP will reduce the C-Ratio buffer to 1% from 10%. The buffer was originally implemented as a protection mechanism for slashing of fees, as fee slashing is no longer implemented there is no need for such a high buffer, as it only needs to protect from minor price fluctuations. The previous 10% buffer meant a C-Ratio of ~682% was required to claim fees, while the new 1% buffer means a C-Ratio of ~742.6% is required.
Published: Oct 4, 2019
- SIP-8: This SIP formalises the sETH liquidity provider reward trial at the protocol level, diverting a portion of the SNX weekly inflation into a pool to incentivise liquidity providers of the sETH/ETH pair in Uniswap. The trial has been successful, but in order for this mechanism to work long term it must be formalised into the protocol.
- SIP-12: This SIP proposes to prevent front running of the price oracle by introducing max gas price for transactions on Synthetix exchanges. Front running occurs when a user or bot reads an incoming oracle update from the mempool and transmits an exchange with higher GWEI, taking advantage of a known price movement. Front running can jeopardise the debts of SNX stakers by enabling better odds at making profitable trades, and several accounts have used front running methods already. This first phase of SIP-12 will determine a max GWEI setting based on the current Ethereum congestion (somewhere between 'standard' and 'fast'), and traders will not be able to push a trade with more GWEI than that. Synthetix.Exchange will not allow traders to use a 'fast' GWEI setting, but if someone attempts a trade using the contacts directly, if they use a higher GWEI then the transaction will fail.
Published: Sep 26, 2019
- SIP 16: Synthetix upgrades currently take longer than needed as the owner account makes up to 60 calls to configure the system. Most of these calls are setSynthetix and setFeePool on all of the Synths. We propose to point the Synths to the Synthetix Proxy and FeePool Proxy. This would reduce the amount of time the system is offline. Making upgrades a lot faster, cheaper (gas) and minimize the impact on users with reduced downtime.
- SIP 17: This update will upgrade the currencyKeys from Bytes4 to Bytes32. This will enable Synthetix to create new Synths with symbols longer than 4 characters. e.g. sATOM, sDEFI, which is not currently possible with currencyKeys type defined as Bytes4.
- SIP 18: This will recover the $2.9k sUSD that is currently unclaimable by minters in the SNX fee address. This sUSD is from the period in which there was a transfer fee for sending sUSD.
- SIP 19: The Synthetix contracts still have transfer fees written into them, from before we disabled transfer fees in February 2018. Removing that code will optimise reclaim bytecode size required for new features.
Synthetix npm module (v2.1.9)¶
Published: Apr 4, 2019
We added support for synthetix as an npm module. With it, you can load the ABIs, bytecode, and target addresses for
synthetixon mainnet and all available testnets (
ropsten). Please see our README.md documentation for more details.
10 new Synths and Synthetix upgrade (v2.1.0)¶
Published: Feb 26, 2019
- Gas optimisation for Synth minting and burning
- Transfer Fee Fix to allow it to be set to zero
- SynthExchange event for DApps when exchanging between synths
Synthetix crypto-backed synthetic asset platform (v2.0.0)¶
Published: Dec 18, 2018
The Synthetix Platform enables the creation of on-chain synthetic assets (Synths) that track the value of assets in the real world. Some examples of assets that the platform supports now or will support in the future are synthetic fiat currencies (sUSD, sAUD, sKRW etc), synthetic commodities such as gold (sXAU), as well as more complex assets such as equity indices.
nUSD System A - Maintenance Patch 1 (v1.0.1)¶
Published: Aug 7, 2018
Adds some convenience functions and minor optimisations and fixes.
nUSD System A - Foundation Static Issuance (v1.0.0)¶
Published: Aug 7, 2018
In this version of the nUSD system, nomins are havven-backed, and only the foundation may issue, up to an issuance ratio it sets.
Ether-Backed USD Nomins (v0.1.0)¶
Published: Aug 7, 2018