Tangem Wallet Pack of 2 - Secure Crypto Wallet - Trusted Cold Storage for Bitcoin, Ethereum, NFT's &

Tangem Wallet Pack of 2 - Secure Crypto Wallet - Trusted Cold Storage for Bitcoin, Ethereum, NFT's &
Key item features Ultimate Security: Generates a private key that remains on the card, safeguarding crypto and NFTs from hackers with EAL6+ certification and audited firmware. Versatile Compatibility: Manages over 13,000 tokens across 70+ blockchains, supporting DeFi, NFTs, and DeEx without wires, Bluetooth, or USB. Effortless Operation: Utilizes NFC for secure transactions via a mobile device and the Tangem app, enabling buying and selling crypto with various payment methods. Smart Backup: Features a second Tangem Wallet as a backup, eliminating the need for paper, pictures, or seed phrases for recovery. Durable Design: Boasts IP68 protection against environmental conditions, ensuring longevity and robust physical security. Comprehensive Support: Compatible with Bitcoin, Ethereum, Solana, XRP, USDT, and over 6,000 cryptocurrencies, integrating with dApps and WalletConnect.

LBANK

LBANK

What is involved in the "database compaction" of a Lightning Network node?

As lightning network channels route payments, channel updates require the 2 channel peers (Alice & Bob) to do a round of signing and trade commitment transactions for the most up-to-date channel balance.

Is this the primary reason that the channel.db file may grow so dramatically?

For each update, Alice must keep a full record of all revocation keys from all past commitment transactions in case Bob broadcasts an invalid past channel state. If these keys are deleted, Alice will be vulnerable to Bob stealing money and Alice would not be able to create & broadcast the correct penalty transaction to punish Bob.

Database compaction is typically run on startup of the node, but what exactly is involved in that compaction? Are the revocation keys being indexed / compressed in some lossless/recoverable fashion?

Do other implementations than LND have the same process?



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