SIMD-0670: ABIv1 invoke signed V2 syscall

SIMD-0670 (ABIv1 invoke signed V2 syscall) is a Core Standard Solana Improvement Document by febo (Anza); proposal status Review.

Its feature gate is not active on mainnet-beta, testnet and devnet yet.

Feature gates

• Feature gate: SIMD-0670: ABIv1 invoke signed v2 syscall

Vortex Testnet

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