Jekyll2026-03-31T07:49:07+00:00//bitdevsamsterdam.org/feed.xmlBitDevs AmsterdamBitDevs is a community for those interested in discussing and participating in the research and development of Bitcoin and related protocols.BitDevs Rotterdam, June 4, 20262026-06-04T00:00:00+00:002026-06-04T00:00:00+00:00//bitdevsamsterdam.org/june-bitdevs-rotterdamBitDevs Rotterdam meeting 029!

It’s time for another BitDevs! A big thanks to Blockrise for sponsoring us with the meeting space. Drinks will be provided, so please ensure you have some dinner beforehand or bring it along to the seminar.

Thursday, June 4th, 2026 @ 7PM

Doors open at 6:30PM and we will try to start promptly at 7PM. As a reminder, the ground rules of BitDevs are as follows:

  1. No photos, videos, or recordings.
  2. Chatham House Rule: you may reiterate the contents of the meeting without attribution.

These rules exist so that BitDevs participants can speak freely within the event.

Agenda

TBA

]]>BitDevs Amsterdam, May 7th, 20262026-05-07T00:00:00+00:002026-05-07T00:00:00+00:00//bitdevsamsterdam.org/may-bitdevs-amsterdamBitDevs Amsterdam meeting 028!

It’s time for another BitDevs! A big thanks to Bitonic for sponsoring us with the meeting space. Drinks will be provided, so please ensure you have some dinner beforehand or bring it along to the seminar.

Thursday, May 7th, 2026 @ 7PM

Doors open at 6:30PM and we will try to start promptly at 7PM. As a reminder, the ground rules of BitDevs are as follows:

  1. No photos, videos, or recordings.
  2. Chatham House Rule: you may reiterate the contents of the meeting without attribution.

These rules exist so that BitDevs participants can speak freely within the event.

Agenda

TBA

]]>BitDevs Rotterdam, April 2, 20262026-04-02T00:00:00+00:002026-04-02T00:00:00+00:00//bitdevsamsterdam.org/april-bitdevs-rotterdamBitDevs Rotterdam meeting 027!

It’s time for another BitDevs! A big thanks to Blockrise for sponsoring us with the meeting space. Drinks will be provided, so please ensure you have some dinner beforehand or bring it along to the seminar.

Thursday, April 2nd, 2026 @ 7PM

Doors open at 6:30PM and we will try to start promptly at 7PM. As a reminder, the ground rules of BitDevs are as follows:

  1. No photos, videos, or recordings.
  2. Chatham House Rule: you may reiterate the contents of the meeting without attribution.

These rules exist so that BitDevs participants can speak freely within the event.

Agenda

  • Disposing of dust attack UTXOs: A proposed method for wallet users to dispose of “dust attack” UTXOs, small amounts sent by adversaries to reveal wallet ownership patterns, by creating transactions that use the entire amount for fees with an OP_RETURN output.
  • BIP 54 (Consensus Cleanup) active on Bitcoin Inquisition: BIP 54 is now active on Bitcoin Inquisition, a specialized Bitcoin Core fork used for testing proposed protocol changes. It includes fixes for known consensus bugs such as Timewarp/Murch-Zawy timestamp attacks, long block validation times from excessive legacy signature operations, the 64-byte transaction Merkle tree weakness, and coinbase transaction duplication.
  • Hourglass V2 update: An update on the Hourglass protocol (V2), a proposed soft fork designed to mitigate the economic damage from potential quantum attacks on lost Bitcoin. It would restrict how quickly vulnerable P2PK funds can be spent to prevent a mass market liquidation event if a quantum adversary gains the ability to derive private keys from exposed public keys.
  • BIP 360: Pay to Merkle Root (P2MR): A new BIP specifying “Pay to Merkle Root,” a transaction output format designed to enhance Bitcoin’s scripting capabilities. The proposal was merged in February 2026 as a Draft specification.
  • BIP 392: Silent Payment Output Script Descriptors: Introduces a new output descriptor format for Silent Payments (BIP352), proposing sp() script expressions with spscan and spspend key expressions, allowing wallets to represent and manage silent payment keys using a standardized descriptor format.
  • Two-block reorg at height 941880: A mining event where Foundry mined two consecutive blocks, causing a reorganization that displaced blocks from AntPool and ViaBTC. Analysis suggests network latency and block propagation timing as contributing factors.
  • Fuzzor: continuous fuzzing infrastructure: Experimental continuous fuzzing infrastructure primarily designed to test Bitcoin Core, supporting multiple fuzzing engines (AFL++, libFuzzer, honggfuzz) with automated bug detection, crash deduplication, and coverage analysis.
  • Want to submit a discussion topic? Open an issue or PR at https://github.com/bitdevsamsterdam/bitdevsamsterdam.github.io
]]>BitDevs Amsterdam, March 5th, 20262026-03-05T00:00:00+00:002026-03-05T00:00:00+00:00//bitdevsamsterdam.org/march-bitdevs-amsterdamBitDevs Amsterdam meeting 026!

It’s time for another BitDevs! A big thanks to Bitonic for sponsoring us with the meeting space. Drinks will be provided, so please ensure you have some dinner beforehand or bring it along to the seminar.

Thursday, March 5th, 2026 @ 7PM

Doors open at 6:30PM and we will try to start promptly at 7PM. As a reminder, the ground rules of BitDevs are as follows:

  1. No photos, videos, or recordings.
  2. Chatham House Rule: you may reiterate the contents of the meeting without attribution.

These rules exist so that BitDevs participants can speak freely within the event.

Agenda

  • hArk (hash-lock-Ark): A major Ark protocol evolution that eliminates synchronous interactivity during rounds. Instead of requiring all participants to be online simultaneously to sign transactions, the server generates unique secrets for each VTXO, allowing participants to claim their funds asynchronously.
  • ZK Statechains: Replaces traditional statechain ledgers with zero-knowledge proofs to validate ownership transfers of Bitcoin UTXOs while maintaining privacy, combining statechain exit mechanics with a “ZK Ledger” that proves key changes and timelock decrements.
  • Taproot Quantum Spend Paths: Proposes a quantum-safe version of Taproot that allows Bitcoin addresses to have multiple spending paths (both quantum-resistant and quantum-vulnerable), letting users continue benefiting from smaller, efficient signatures until quantum computers become a genuine threat.
  • Lightning Network surpassed $1B in monthly volume
  • L402 Apps: A directory and marketplace for Lightning Network-powered applications and APIs that enable micropayments in Bitcoin. Discover apps that accept L402 payments and call verified Lightning-paywalled API endpoints priced in satoshis.
  • BIP352 update: Proposes adding a limit specifying that the number of taproot outputs in a transaction must fit within an unsigned 32-bit integer for silent payments scanning, improving clarity for implementations choosing compatible data types.
  • sedited added to trusted-keys: Adds sedited to Bitcoin Core’s trusted-keys file, granting cryptographic signing authority for the release process.
  • Incremental mutation testing in Bitcoin Core: Applies mutation testing selectively and progressively by focusing only on code changes since the last analysis, dramatically reducing execution time while maintaining the ability to assess whether tests effectively detect introduced bugs.
  • Binohash: Transaction Introspection Without Softforks: A collision-resistant hash function for Bitcoin Script that enables limited transaction introspection without consensus changes.
    • [https://robinlinus.com/binohash.pdf][https://robinlinus.com/binohash.pdf]
]]>BitDevs Rotterdam, February 5, 20262026-02-05T00:00:00+00:002026-02-05T00:00:00+00:00//bitdevsamsterdam.org/february-bitdevs-rotterdamBitDevs Rotterdam meeting 025!

It’s time for another BitDevs! A big thanks to Blockrise for sponsoring us with the meeting space. Drinks will be provided, so please ensure you have some dinner beforehand or bring it along to the seminar.

Thursday, February 5th, 2026 @ 7PM

Doors open at 6:30PM and we will try to start promptly at 7PM. As a reminder, the ground rules of BitDevs are as follows:

  1. No photos, videos, or recordings.
  2. Chatham House Rule: you may reiterate the contents of the meeting without attribution.

These rules exist so that BitDevs participants can speak freely within the event.

Agenda

Part I: BIP54 (Consensus Cleanup Revival)

Part II: Bitcoin Open Source vs LLM coding

Open discussion around bitcoin open source development and the challenges that wide adoption of LLM/agentic coding presents. Main discussion will be around development flow, reviews, repository policies and security.

]]>BitDevs Rotterdam, January 8, 2026 (❄️ cancelled)2026-01-08T00:00:00+00:002026-01-08T00:00:00+00:00//bitdevsamsterdam.org/january-bitdevs-rotterdamBitDevs Rotterdam meeting 025!

❄️❄️❄️ Sadly this months’s Rotterdam meetup has been cancelled due to snow.

We’ll announce the next meetup and location soon(tm).

]]>BitDevs Amsterdam, December 4th, 20252025-12-04T00:00:00+00:002025-12-04T00:00:00+00:00//bitdevsamsterdam.org/december-bitdevs-amsterdamBitDevs Amsterdam meeting 024!

It’s time for another BitDevs! A big thanks to Bitonic for sponsoring us with the meeting space. Drinks will be provided, so please ensure you have some dinner beforehand or bring it along to the seminar.

Thursday, December 4th, 2025 @ 7PM

Doors open at 6:30PM and we will try to start promptly at 7PM. As a reminder, the ground rules of BitDevs are as follows:

  1. No photos, videos, or recordings.
  2. Chatham House Rule: you may reiterate the contents of the meeting without attribution.

These rules exist so that BitDevs participants can speak freely within the event.

Agenda

The mysterious Bitcoin Core developers met in October. Minutes of meeting were leaked!

We’ll cover these topics based on the collected notes:

Softforks

Networking

Plumbing

Privacy and security

Test, developer tools

Meta

]]>BitDevs Rotterdam, November 6, 20252025-11-06T00:00:00+00:002025-11-06T00:00:00+00:00//bitdevsamsterdam.org/november-bitdevs-rotterdamBitDevs Rotterdam meeting 023!

It’s time for another BitDevs! A big thanks to Blockrise for sponsoring us with the meeting space. Drinks will be provided, so please ensure you have some dinner beforehand or bring it along to the seminar.

Thursday, November 6th, 2025 @ 7PM

Doors open at 6:30PM and we will try to start promptly at 7PM. As a reminder, the ground rules of BitDevs are as follows:

  1. No photos, videos, or recordings.
  2. Chatham House Rule: you may reiterate the contents of the meeting without attribution.

These rules exist so that BitDevs participants can speak freely within the event.

Agenda

This month’s agenda is inspired by the lightning++ conference in Berlin that took place earlier in October. Unfortunately individual videos corresponding to specific talks have not yet been uploaded, and also any recordings of the secondary stage are not uploaded. That means that reading material remains in text form.

]]>BitDevs Amsterdam, October 2nd, 20252025-10-02T00:00:00+00:002025-10-02T00:00:00+00:00//bitdevsamsterdam.org/october-bitdevs-amsterdamBitDevs Amsterdam meeting 022!

It’s time for another BitDevs! A big thanks to Bitonic for sponsoring us with the meeting space. Drinks will be provided, so please ensure you have some dinner beforehand or bring it along to the seminar.

Thursday, October 2nd, 2025 @ 7PM

Doors open at 6:30PM and we will try to start promptly at 7PM. As a reminder, the ground rules of BitDevs are as follows:

  1. No photos, videos, or recordings.
  2. Chatham House Rule: you may reiterate the contents of the meeting without attribution.

These rules exist so that BitDevs participants can speak freely within the event.

Agenda

PRs / Releases

Research

Proposals

]]>BitDevs Rotterdam, September 4, 20252025-09-04T00:00:00+00:002025-09-04T00:00:00+00:00//bitdevsamsterdam.org/bitdevs-rotterdamBitDevs Rotterdam meeting 021!

It’s time for another BitDevs! A big thanks to Blockrise for sponsoring us with the meeting space. Drinks will be provided, so please ensure you have some dinner beforehand or bring it along to the seminar.

Thursday, September 4rd, 2025 @ 7PM

Doors open at 6:30PM and we will try to start promptly at 7PM. As a reminder, the ground rules of BitDevs are as follows:

  1. No photos, videos, or recordings.
  2. Chatham House Rule: you may reiterate the contents of the meeting without attribution.

These rules exist so that BitDevs participants can speak freely within the event.

Agenda

Policy, policy, policy!

Notable PRs / proposals

Research

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