Bitcoin Optech newsletter #411 is here:
- describes the responsible disclosure of a denial-of-service vulnerability that affected older versions of LND
- summarizes popular Q&A from Stack Exchange
- Optech Newsletter #411 Podcast
https://bitcoinops.org/en/newsletters/2026/06/26/
Nishant Bansal posted to Delving Bitcoin disclosing a denial-of-service vulnerability he discovered through state-machine fuzzing of LND’s gossip handling...
https://bitcoinops.org/en/newsletters/2026/06/26/#lnd-zero-timestamp-gossip-dos-disclosure
Selected Q&A from Bitcoin Stack Exchange
- Is it a bug that OP_IF is part of the tapscript opcodes?
- Why would forbidding OP_IF in tapscript be a problem?
- Does a softfork always succeed?
- How to set up Bitcoin Core to mine a valid block after the BIP110 activation in August 2026?
- Are BIP110 blocks on a branch with lower difficulty valid?
- What is the story behind Bitcoin test networks?
- Why was -datacarriersize redefined in 2022, and why was the 2023 proposal to expand it not merged?
- Are chains of 26 unconfirmed transactions prohibited by the wallet in Bitcoin Core 31.0?
- Are there changes in Bitcoin Core 29.0 that affect memory usage?
- What is Bitcoin Core’s release schedule?
https://bitcoinops.org/en/newsletters/2026/06/26/#selected-qa-from-bitcoin-stack-exchange
Bitcoin Optech will host an audio recap discussion of this newsletter streaming live on X/Twitter Tuesday at 16:30 UTC.
Bitcoin Optech
npub1hk…a432p
2026-06-26 11:48:32 UTC
Author Public Key
npub1hkuk45c6c6h3y0rks0z4wa0wyyud5ru0qy0rn9x4dgnjwrnfy46s5a432pSeen on
wss://nos.lolPublished at
2026-06-26 11:48:32 UTCEvent JSON
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"content": "Bitcoin Optech newsletter #411 is here:\n\n- describes the responsible disclosure of a denial-of-service vulnerability that affected older versions of LND\n- summarizes popular Q\u0026A from Stack Exchange\n- Optech Newsletter #411 Podcast\nhttps://bitcoinops.org/en/newsletters/2026/06/26/\n\nNishant Bansal posted to Delving Bitcoin disclosing a denial-of-service vulnerability he discovered through state-machine fuzzing of LND’s gossip handling...\nhttps://bitcoinops.org/en/newsletters/2026/06/26/#lnd-zero-timestamp-gossip-dos-disclosure\n\nSelected Q\u0026A from Bitcoin Stack Exchange\n- Is it a bug that OP_IF is part of the tapscript opcodes? \n- Why would forbidding OP_IF in tapscript be a problem?\n- Does a softfork always succeed?\n- How to set up Bitcoin Core to mine a valid block after the BIP110 activation in August 2026?\n- Are BIP110 blocks on a branch with lower difficulty valid?\n- What is the story behind Bitcoin test networks?\n- Why was -datacarriersize redefined in 2022, and why was the 2023 proposal to expand it not merged?\n- Are chains of 26 unconfirmed transactions prohibited by the wallet in Bitcoin Core 31.0?\n- Are there changes in Bitcoin Core 29.0 that affect memory usage?\n- What is Bitcoin Core’s release schedule?\nhttps://bitcoinops.org/en/newsletters/2026/06/26/#selected-qa-from-bitcoin-stack-exchange\n\nBitcoin Optech will host an audio recap discussion of this newsletter streaming live on X/Twitter Tuesday at 16:30 UTC.",
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