Sei Blockchain has issued a warning to holders of USDC.n stablecoin, recommending switching to “USDC native” ahead of the network upgrade scheduled for March.
USDC.n, also known as USDC via Noble, is the older version of USDC on the Sei network. This token was originally issued by Circle on the Noble blockchain and bridged to Sei. Before Circle deploys USDC native directly on Sei, USDC.n has served as the official USDC version and was the most widely used on the network.
Currently, the amount of USDC via Noble circulating on Sei is approximately $1.4 million, a significant decrease from the several million USD previously, as users continue to swap to the standard (canonical) version of USDC on Sei.
In March, Sei plans to implement a major upgrade, SIP-3, marking a complete transition to an EVM-only blockchain. This upgrade will remove CosmWasm as well as native assets from the Cosmos ecosystem on Sei.
Noble is an appchain within the Cosmos ecosystem, specifically designed for issuing native assets within the Cosmos/IBC ecosystem. This network acts as an intermediary between stablecoin issuers — including Circle, Hashnote Labs, Monerium, and Ondo Finance — and Cosmos blockchains, facilitating stablecoin integration into the ecosystem.
Sei warns that after the upgrade, USDC.n may become inaccessible or lose value on the network. The project recommends small-volume users to use DragonSwap or Symphony for conversions. For large holders, Sei suggests using Brr’s conversion tool, which consolidates transactions from Noble to Polygon, then brings assets back to Sei via Circle’s CCTP protocol.
By the end of 2023, Circle Ventures invested an undisclosed amount into the Layer 1 Sei network, shortly after Circle established a partnership with Noble. This positions Noble as Circle’s primary USDC deployment network within the Cosmos ecosystem. Last year, Noble also partnered with the new stablecoin project M^0 to support the USDN token pegged to USD.
Tach Sanh
Disclaimer: The information on this page may come from third parties and does not represent the views or opinions of Gate. The content displayed on this page is for reference only and does not constitute any financial, investment, or legal advice. Gate does not guarantee the accuracy or completeness of the information and shall not be liable for any losses arising from the use of this information. Virtual asset investments carry high risks and are subject to significant price volatility. You may lose all of your invested principal. Please fully understand the relevant risks and make prudent decisions based on your own financial situation and risk tolerance. For details, please refer to
Disclaimer.
Related Articles
Circle CEXed $500M USDC on Solana Network
Gate News bot message, Circle has CEXed $500 million USDC on Solana. According to the data, Circle has CEXed a total of $28.5 billion USDC on Solana in 2026.
GateNews6h ago
USDC Treasury mints 100 million USDC on the Ethereum blockchain
Gate News reported that on March 17, according to Whale Alert monitoring, USDC Treasury minted 100 million USDC on the Ethereum chain.
GateNews9h ago
A user signed a malicious authorization transaction, resulting in approximately $280,000 in stablecoins being transferred.
Users fell victim to phishing attacks by signing malicious Permit transactions, losing approximately $280,000 in USDC and USDT to phishing attackers. The victim address is 0xB20d4Cd049B1A65Bc0475D29060Fe54fa0981607, with multiple phishing addresses involved in the incident.
GateNews13h ago
A user was robbed of $1.76 million USDC after signing a malicious Permit transaction
Gate News update: On March 17th, according to GoPlus monitoring, approximately 8 hours ago, a user lost $1.76 million worth of USDC to a phisher after signing a malicious Permit transaction.
GateNews20h ago
Circle Minted $8 Billion USDC Since February 2026
Arkham's analysis reveals a significant increase in USDC minting by Circle, surpassing $8B and raising total supply above $78B. This trend highlights USDC's growing market trust and indicates potential long-term volatility compared to other cryptocurrencies.
BlockChainReporter03-16 17:04
