DRA

eCash Open Discussion X Space - May 13, 2026

May 13, 2026

On May 13, 2026, Paul hosted an eCash Open Discussion X Space with community participants covering Drivechain, BIP300/301, CUSF, sidechain fee economics, Blind Merged Mining, and eCash as a proving ground for Bitcoin-aligned L2 development.

Highlights

Key Takeaways

Aligning sidechains with Bitcoin mining

Paul framed Drivechain’s relationship with miners as an alignment between L2 continuity and Bitcoin’s proof-of-work majority, rather than a transfer of Bitcoin governance. Because a sidechain must remain compatible with the hashpower extending L1, merge mining gives miners a direct economic reason to process L2 activity. The discussion connected this incentive to Bitcoin’s long-term security budget: fees from many active sidechains can become a substantial portion of miner revenue while preserving each sidechain’s independent rules and user demand. This positions Drivechain as a way to expand transaction capacity and fee generation without moving that activity onto L1.

How Blind Merged Mining creates fees

Paul walked through BIP301’s Blind Merged Mining design in concrete terms. Each Drivechain slot carries a designated 32-byte commitment in the L1 coinbase, and an L2 block earns recognition when its hash occupies that location. Independent block producers assemble sidechain blocks and bid through ordinary L1 payments for miners to include their commitment; competing candidates for the same sidechain effectively form an auction. Up to 256 sidechains can advance within one Bitcoin block through separate slots, so they do not bid against unrelated chains. The winning producer keeps the spread between collected L2 fees and the L1 payment, while miners gain revenue with minimal added operational burden.

eCash as an early deployment environment

The discussion presented eCash as a practical early environment for BIP300/301 and the broader Drivechain software suite. Paul explained that improvements to sidechains such as BitAssets, zSide, BitNames, and other applications could be reused by any compatible parent chain, allowing later adopters to begin with software already exercised in production-like conditions. Participants also explored how asset-state snapshots and portable L2 designs could connect ecosystems while preserving each chain’s native base asset. CUSF, the Core Untouched Soft Fork, complemented this path by separating activation from Bitcoin Core’s release process, offering a clean route for optional consensus features while keeping Core untouched.