Greg Sanders joins us to discuss ANYPREVOUT, ephemeral anchors and LN symmetry (a.k.a. ELTOO). We chat about: - Package relay (2:07) - Pinning attacks (3:14)   - BIP125   - T-Bast’s pinning attack summary - Mempool policy (4:56) - Stuffing the mempool - 2017 (5:20) - Rewrite mempool or make the problem simpler (07:57) - Package relay RBF A.K.A. V3 (8:38) - Reducing the standard transaction size to 65 bytes PR (14:25) - March to LN symmetry (19:07) - Daric: A Storage Efficient Payment Channel With Penalization Mechanism - Two-party eltoo w/ punishment by AJ Towns - BIP118 - SIGHASH_ANYPREVOUT (26:17)   - SIGHASH_NOINPUT - Softfork and activation history (28:11) - Ephemeral anchors (32:18)   - op_2 email by Luke - Is ANYPREVOUT useful outside of LN symmetry? (43:27)