Arbitrum backs Paxos's USDG to collect a share of stablecoin reserve income

The press coverage did not put a dollar value on the governance proposal's 100 million ARB ^[9]. Standard Chartered's forecast last month gives one indirectly. Its $10 target for 2030 was roughly 70 times ARB's price at the time ^[21], which puts the token near 14 cents ^[14] and the top-up near $14 million ^[15]. The roughly 7 million ARB already set aside to encourage USDG use ^[18] adds about $1 million at the same price ^[17]. Both figures rest on a month-old implied price.

The target is Circle's position on the network. USDC is about 60% of the roughly $3.8 billion of stablecoins on Arbitrum, according to DefiLlama data cited by CoinDesk ^[7], or about $2.28 billion ^[24]. Arbitrum takes no direct share of the reserve income on those tokens ^[16]. (The Arbitrum Foundation puts the total nearer $4 billion ^[11].) If USDG replaced every one of those USDC dollars, the $14 million top-up would equal about 0.6% of the balance, paid once ^[25]. Whether that pays back depends on two numbers: the yield on Paxos's reserves and the fraction of it the Global Dollar Network passes to Arbitrum. Neither was published with the launch.

For scale, USDG's whole supply is about $3.09 billion, most of it on X Layer, Robinhood Chain and Solana ^[4]. That is about 1.36 times the USDC already on Arbitrum ^[26].

"With USDG, Arbitrum and builders across the platform now have a stake in the growth upside," said Brendan Ma, head of investment strategy at the Arbitrum Foundation ^[8]. The stake has a destination. Cointelegraph reports that the rewards Arbitrum earns will go toward adoption and ecosystem development ^[10], so for now the new income is earmarked for more growth spending.

There are three ways this can go. USDG could take float from USDC on Arbitrum, and Circle would lose balances on a network where it holds most of the dollars. It could rent liquidity: GMX is targeting APRs of more than 8% on certain USDG pools for the first eight weeks ^[19], and money that comes for that rate can leave when it ends. Or USDG could arrive as new money, lowering Circle's percentage without touching its dollar balance. I think most of the early USDG on Arbitrum will be the rented kind, because the yield users can see is the GMX boost and the ARB allocation, and both are temporary. Crypto Briefing makes the counter-case: ARB rewards are temporary by design, while a share of reserve yield gives partners an ongoing reason to keep promoting the token ^[23]. Arbitrum now has that reason to promote USDG, and USDC, which holds 60% of its stablecoins, gives it none ^[16].

Arbitrum has other deals like this. Robinhood has agreed to share a portion of revenue from user activity on Robinhood Chain, which runs on Arbitrum's technology, with the Arbitrum ecosystem ^[12]. Standard Chartered described that as the network receiving 10% of net protocol revenue from companies building on its infrastructure ^[13]. Mantle has also added USDG and joined the Global Dollar Network, according to Cointelegraph ^[20]. Issuers are forming groups too: OpenUSD is backed by Mastercard, Visa, Stripe, Coinbase and Shopify, and Qivalis by 37 European banks ^[22].

The test is the USDC share once the subsidies stop. If USDC still holds about 60% after the GMX window closes, around December 1 if the eight weeks run from launch ^[27], then USDG did not challenge Circle at any size that matters. Arbitrum would have spent about $14 million in tokens to find that out ^[15].