Zcash Developer Proposes 8 MB Blocks in NU8 as Shielded Usage Grows 

• A Zcash developer wants block size raised from 2 MB to 8 MB in the next upgrade.
• ValarDragon says Tachyon plus larger blocks could together hit 200 shielded TPS.
• Zcash handled about 710,000 transactions in Q3, an average near 0.09 per second.

Zcash developers are pushing two capacity changes in the same week: a faster block interval and a block size four times larger. Shielded activity is climbing, yet it remains a sliver of what the chain can already carry.

What Are The Proposals?

• 8 MB blocks: ValarDragon asked on the community forum for NU8, aimed at late January 2027, to lift the cap from 2 MB to 8 MB, and said the final size could be higher.
• The 200 TPS pitch: He projected 200 shielded transactions per second once the Tachyon pool and bigger blocks work together.
• The rest of NU8: An extensible transaction format for hardware wallets, post-quantum tran…

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