Print
Tether & Ethfinex collaborate on development of ERC20 Tether tokens

Tether.to is working tirelessly to disrupt the legacy financial system through a more modern approach to money. As the first blockchain-enabled platform to facilitate the use of fiat currencies in a digital manner, Tether has made headway by giving customers the ability to transact with traditional currencies across the blockchain, without the inherent volatility and complexity typically associated with a digital currency.

Following the widespread success of their Bitcoin-based USDTether, issued via the Omni Layer Protocol, Tether have now collaborated with Ethfinex on the development of the first Ethereum-based Tether, compatible with the ERC20 standard. The ERC20 Tether allows for tokenized USD to be exchanged on the Ethereum network, enabling interoperability with Ethereum-based protocols and DApps whilst allowing users to transact with fiat currencies across the Ethereum Network.

By introducing fiat tokens—digital cash—to the Bitcoin & Ethereum blockchains, Tether makes a significant contribution to a more connected ecosystem by adding digital currency benefits, such as instant global transactions, to traditional currency and traditional currency benefits, in the form of price stability, to digital currency.

Tether are proud to have collaborated with Ethfinex on the deployment of the ERC20 Tethers. Ethfinex have contributed to the project through smart contract development and will work to integrate the ERC20 tokens on their exchange as a mechanism for funding and fiat trading. The ERC20 Tether represents a key opportunity to enable and facilitate the adoption of blockchain technologies (and the use of the Ethereum network) by more mainstream consumer applications by bringing the stability and utility of fiat currencies to the cryptosphere.

Craig Sellars, Chief Technologist at Tether, commented: “Following the success of our widely used US Dollar tokenisation on the Bitcoin blockchain, this latest version enables interoperability with Ethereum-based protocols and DApps. We believe this new development will reduce the current interbank delays often involved in exchange withdrawal and allow our users access to tokenized USD – a first for the industry.”

The ERC20 Tether contracts were developed by Tether.to in partnership with Ethfinex. These underwent a full security review by lead auditor Phil Daian, with thanks also to Matt Di Ferranti. Please refer to Phil Daian’s full external audit report for more information:
https://stableset.com/audits/tether_audit_v1/tether_audit_v1.pdf

The ERC20 Tether contract address can be found here:
https://etherscan.io/address/0xd697A61D5FB4e076125e0bE647f902b02bb3A0F1

(EDIT: Contract redeployed 13/09/2017 — Thank you to Jorge Izquierdo at Aragon Project for spotting a bug with the upgrade path)

latest news

Tether to Wind Down USD₮ Support for Five Legacy Blockchains as Part of Strategic Infrastructure Review

Omni, Bitcoin Cash SLP, Kusama, EOS, and Algorand Support to Cease on September 1, 2025 11 July, 2025 — Tether, the largest company in the digital asset ecosystem, today announced an update on its plan to discontinue USD₮ redemptions and freeze remaining tokens on five legacy blockchains — Omni Layer, Bitcoin Cash SLP, Kusama, EOS, […]

Learn more
Tether Announces Strategic Investment in Crystal Intelligence, Strengthening Blockchain Forensics and Efforts to Combat Illicit Stablecoin Activity

8 July 2025 – Tether, the largest company in the digital asset industry, has made a strategic investment in Crystal Intelligence, a leading blockchain analytics firm providing advanced risk monitoring, fraud detection, and regulatory intelligence solutions. The investment represents another component of Tether’s coordinated efforts to combat illicit stablecoin use by supporting law enforcement and […]

Learn more
Tether and Adecoagro To Power Bitcoin Mining With Renewable Energy In Brazil

3 July 2025 – Tether Holdings (“Tether”), the largest company in the digital asset industry and Adecoagro S.A. (NYSE: AGRO) (“Adecoagro” or the “Company”), a leading sustainable production company in South America, today announced that they have signed a Memorandum of Understanding (MoU) to explore a strategic collaboration focused on bitcoin mining. As the world […]

Learn more
Read all news