docs: spearbit report (#148)

# 🤖 Linear

Closes OPT-XXX

README.md

@@ -1,8 +1,6 @@
 # Bridged USDC Standard for the OP Stack
 
-> ⚠️ This code has not been audited yet and is not production ready at this time, tread with caution.
-
-USDC is one of the most bridged assets across the crypto ecosystem, and USDC is often bridged to new chains prior to any action from Circle. This can create a challenge when Bridged USDC achieves substantial marketshare, but Native USDC is preferred by the ecosystem, leading to fragmentation between multiple representations of USDC. Circle introduced the (Bridged USDC Standard)[https://www.circle.com/blog/bridged-usdc-standard] to ensure that chains can easily deploy a form of USDC that is capable of being upgraded in-place by Circle to Native USDC, if and when appropriate, and prevent the fragmentation problem.
+USDC is one of the most bridged assets across the crypto ecosystem, and USDC is often bridged to new chains prior to any action from Circle. This can create a challenge when Bridged USDC achieves substantial marketshare, but Native USDC is preferred by the ecosystem, leading to fragmentation between multiple representations of USDC. Circle introduced the [Bridged USDC Standard](https://www.circle.com/blog/bridged-usdc-standard) to ensure that chains can easily deploy a form of USDC that is capable of being upgraded in-place by Circle to Native USDC, if and when appropriate, and prevent the fragmentation problem.
 
 Bridged USDC Standard for the OP Stack allows for an efficient and modular solution for expanding the Bridged USDC Standard across the Superchain ecosystem. Utilizing the cross chain messaging of the canonical OP Stack bridge the adapter allows for easy access to Bridged USDC liquidity across OP Stack chains.
 
@@ -32,6 +30,9 @@ _`L2OpUSDCBridgeAdapter`_ - Contract that allows for the transfer of USDC from t
 ![image](https://github.com/user-attachments/assets/291aae4c-e9fb-43a5-a11d-71bb3fc78311)
 
 
+## Security
+Bridged USDC Standard for the OP Stack has undergone audits from [Spearbit](https://spearbit.com/) and is recommended for production use. The audit report is available [here](./audits/spearbit.pdf).
+
 ## Setup
 
 1. Install Foundry by following the instructions from [their repository](https://github.com/foundry-rs/foundry#installation).