add Pectra/EIP-7702 check to deploy_precheck.sh#147
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Adds an init-code probe that STATICCALLs the BLS12-381 G1ADD precompile (EIP-2537) and returns 0x01 if returndatasize > 0, else 0x00. EIP-2537 and EIP-7702 ship in the same Pectra/Prague hardfork, so a positive signal implies 7702 is also enabled (a direct 7702 test would require signing a type-4 transaction, which a key-less precheck can't do). Renumbered downstream sections (Deterministic Deployer 3→4, Permit2 4→5, Chain ID 5→6, Etherscan 6→7) to keep the numbered comments sequential. Tested against Arc (5042) + Robinhood (4663) — both report SUPPORTED, consistent with Calibur (EIP-7702 delegate) deploying cleanly to 0x000000009b1d0af20d8c6d0a44e162d11f9b8f00 on each. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
ericneil-sanc
approved these changes
May 29, 2026
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Summary
Adds a Pectra/EIP-7702 probe to the deployment precheck script, following the same init-code pattern as the existing PUSH0 (Shanghai) and TSTORE (Cancun) tests.
The probe uses the BLS12-381 G1ADD precompile at address `0x0b` (EIP-2537) as a proxy for Pectra activation — EIP-2537 and EIP-7702 ship in the same hardfork, so a positive signal here implies 7702 is also enabled. A direct 7702 test would require sending a signed type-4 transaction, which a key-less precheck can't do.
How it works
Init code (28 bytes, hex `0x61008060006101006000600b61fffffa503d151560005360016000f3`):
```
PUSH2 0x80 out_size = 128
PUSH1 0x00 out_offset
PUSH2 0x100 in_size = 256
PUSH1 0x00 in_offset
PUSH1 0x0b addr = BLS12_G1ADD
PUSH2 0xffff gas
STATICCALL
POP
RETURNDATASIZE
ISZERO ISZERO normalize to 0x01 if returndatasize > 0
PUSH1 0x00 MSTORE8
PUSH1 0x01 PUSH1 0x00 RETURN
```
Tested against
Both line up with Calibur (EIP-7702 delegate) deploying cleanly to the canonical `0x000000009b1d0af20d8c6d0a44e162d11f9b8f00` on each chain in companion PRs (#137, #144).
Test plan
🤖 Generated with Claude Code