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+# Code review bounty claim: Rustchain PR #6666
+
+- Bounty issue: https://github.com/Scottcjn/rustchain-bounties/issues/2782
+- Reviewed PR: https://github.com/Scottcjn/Rustchain/pull/6666
+- Review: https://github.com/Scottcjn/Rustchain/pull/6666#pullrequestreview-4396523952
+- Claim comment: https://github.com/Scottcjn/rustchain-bounties/issues/2782#issuecomment-4586048849
+
+## What I reviewed
+
+I reviewed `node/data_custody.py` and `node/tests/test_data_custody.py`, focusing on deterministic custody challenge generation, proof verification, duplicate sample offset semantics, and the `piece_hash` field behavior.
+
+## Why I liked it
+
+It adds a small, deterministic custody-proof module with direct regression tests, and I verified the focused test suite passes locally (`7 passed`).
+
+## Disclosure
+
+I received RTC compensation for this review.