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Fabian Jahr

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titleconferencedate
CISAbitcoin++ Toronto, consensus edition 20262026-07-22
Three BIPs now specify transaction-wide CISA: BIP 458 (half‑aggregation) produces non‑interactive post‑hoc aggregation that sums s values and yields roughly…
Talk on
Be Robin: A path into Bitcoin Open Sourcebitcoin++ Nairobi 2026: Open Source Edition2026-06-17
Advocates starting as a contributor to an existing project rather than launching a flagship one, showing how to review pull requests to become indispensable…
Talk on
Working on Bitcoinbitcoin++ Nairobi 2026: Open Source Edition2026-06-17
History: contributors start around 2019 and some go serious in 2023, now splitting time between reviews and feature work. Current work includes a P2P…
Talk on
bitcoin++ privacy edition | Riga, Latvia | Day 2bitcoin++ Riga 2025, privacy edition2025-08-07
Wasabi’s coinjoin decomposes amounts — one demo shows a 516,000 satoshi input split into three outputs and an on‑chain round that looks like 214 inputs 255…
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Making Bitcoin More Private With CISABitcoin 20242024-07-25
Cross-Input Signature Aggregation (CISA) compresses per-input Schnorr data so a transaction with many inputs can present one signature object; half signature…
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