Beginner Lightning Network Certification

Demonstrate how SegWit relates to transaction malleability by presenting an unconfirmed Bitcoin transaction whose ID changes yet remains valid, invalidating dependent transactions and illustrating attack consequences.

Explore the wallet user role in the Lightning Network, detailing automated channel creation, end-of-path channels, and strategies to secure inbound liquidity via custodial or non-custodial setups.

Learn the standard funding protocol for lightning network channels: a single participant funds a 2-of-2 multisignature output and creates commitment transactions as insurance.

Explore how the lightning network routes payments across multiple hops using htlcs and commitment transactions. See how hashes, preimages, and time locks secure routing with balances updated without on-chain transactions.

Explore bitcoin script locking mechanisms beyond simple key checks, enabling multisignature wallets, the Lightning Network, ordinals, and standard scripts like pay to public key hash.

Explore absolute and relative time locks, check lock time verify, check sequence verify, and the revocation key to prevent cheating in the Hptlc commitment transactions.

Explore the htlc receiver script in the lightning network, comparing it with the offer side, detailing preimage, payment hash, revocation, check lock time verify, and secure spending paths.