Stale-approval exposure on deprecated router

Orca's assessment for RD-F-168 — scored gray on the v1.7.0 rubric. The evidence below is the curator's reasoning for this score.

Evidence summary #

Legacy Orca AMM v1 was deprecated Q1 2023. SPL Token approve() on Solana grants per-account delegate authority (not ERC-20 allowances). Residual SPL token delegate approvals to the legacy program cannot be enumerated without on-chain indexer scan of approve() events for legacy program addresses. Addresses of legacy program not retrieved in this session. Pipeline-unimplemented for Solana SPL approval scanning.

Sources #

URL
Gemini Cryptopedia — Orca AMM v1 launched February 2021https://www.gemini.com/cryptopedia/orca-crypto-exchange-solana-dex-orca-tokenretrieved 2026-05-16

Methodology #

Count the number of active user approvals (ERC-20 `allowance`) to deprecated router or protocol contracts.

See the full factor methodology and distribution across all protocols →

rubric_version v1.7.0 protocol orca factor RD-F-168 score gray collected_at 2026-05-16 02:39:16