Artem Chystiakov(@Arvolear):Damn vulnerable Simplicity covenants #4. Timelocks are ambiguous. Nodes interpret them differently depending on the tx value passed. If v < 500_000_000, it's a block height; otherwise, it's a timestamp. Be careful designing locking covenants. Unexpected unlocks may occur.

Artem Chystiakov

@Arvolear

Ethereum OG | Simplicity Ecosystem Engineer at @blockstream | Opinions are my own

Joined March 2021

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Artem Chystiakov@Arvolear

2026.06.29 10:58

Damn vulnerable Simplicity covenants #4#. Timelocks are ambiguous. Nodes interpret them differently depending on the tx value passed. If v < 500_000_000, it's a block height; otherwise, it's a timestamp. Be careful designing locking covenants. Unexpected unlocks may occur.