Finnish Bitcoin Association & DMND - Sponsorship Announcement

bitcoin

> DMND Mining Pool is proud to announce its sponsorship of the [Finnish Bitcoin Association](https://bitcoin-yhdistys.fi/) supporting the growth of Bitcoin adoption and education in Finland.
>
> This partnership reflects DMND's commitment to strengthening the global Bitcoin mining community and fostering innovation in the Nordic region. The Finnish Bitcoin Association plays a vital role in advancing Bitcoin literacy, advocacy, and technical development across Finland.
>
> [**...read more at blog.dmnd.work**](https://blog.dmnd.work/finnish-bitcoin-association-dmnd-sponsorship-announcement/)

0xbitcoiner

bitcoinknots/bitcoin · Release Bitcoin Knots v29.3.knots20260210

## Notable changes


Numerous wallet bugs have been fixed, including some obscure scenarios that could delete the wallet (n.b. the ordinary-use disaster in Core 30 never affected Knots). As a side effect, unsupported BDB versions (any other than exactly 4.8 may experience reduced compatibility.

## P2P


- bitcoin#33956 net: fix use-after-free with v2->v1 reconnection logic
- bitcoin#34025 net: Waste less time in socket handling
- bitcoin#34028 p2p: saturate LocalServiceInfo::nScore to prevent overflow
- bitcoin#34093 netif: fix compilation warning in QueryDefaultGatewayImpl()
- Net: Reduce log level for repeated PCP/NAT-PMP NOT_AUTHORIZED failures by default

## Wallet

- bitcoin#31423 wallet: migration, avoid creating spendable wallet from a watch-only legacy wallet
- bitcoin#32273 wallet: Fix relative path backup during migration.
- bitcoin#33268 wallet: Identify transactions spending 0-value outputs, and add tests for anchor outputs in a wallet
- bitcoin#34156 wallet: fix unnamed legacy wallet migration failure
- bitcoin#34226 wallet: test: Relative wallet failed migration cleanup
- bitcoin#34123 wallet: migration, avoid creating spendable wallet from a watch-only legacy wallet
- bitcoin#34176 wallet: crash fix, handle non-writable db directories
- bitcoin#34215 wallettool: fix unnamed createfromdump failure walletsdir deletion
- bitcoin#34370 wallet: Additional cleanups for migration, and fixes for createfromdump with BDB
- knots#242 Fix bugs in various BDB wallet edge cases
- knots#255 Wallet: Even if addresstype==legacy, use non-legacy change if there's no legacy sPKman
- Wallet/bdb: Use LogWarning/LogError as appropriate
- Bugfix: Fee estimation: Refactor logic to avoid unlikely unsigned overflow in TxConfirmStats::Read
- Bugfix: Wallet/bdb: Catch exceptions in MakeBerkeleyDatabase
- Wallet/bdb: improve error msg when db directory is not writable

## Mempool

- knots#246 Bugfix: txmempool: Fallback to CTxMemPoolEntry copying if Boost is too old for node extraction
Block and transaction handling
- bitcoin#34462 util: Drop *BSD headers in batchpriority.cpp

## GUI


- gui#899 Modernize custom filtering
- gui#924 Show an error message if the restored wallet name is empty
- knots#197 GUI: Visually move and rephrase port mapping checkboxes
- knots#244 Bugfix: GUI: Queue stylesheet changes within eventFilters
- knots#245 GUI: Minor: Fix typo in options dialog tooltip
- Revert bringToFront Wayland workaround for Qt versions >=6.3.2 with the bug fixed

## Build

- bitcoin#34227 guix: Fix osslsigncode tests
- secp256k1#1749 build: Fix warnings in x86_64 assembly check
- depends: Qt 5.15.18

BIP 119 CTV activation client

> *by 440000bytes*
>
> Since there were no objections to the activation parameters shared in the last [email](https://groups.google.com/g/bitcoindev/c/HC2bn4QOR-M/m/TF8qJidzAAAJ), I have updated the [website](https://ctv-activation.github.io/) with the repository link for activation client and added some FAQs.
>
> Repository: [GitHub - ctv-activation/activation-client](https://github.com/ctv-activation/activation-client)

```
// Deployment of CTV (BIP-119)
consensus.vDeployments[Consensus::DEPLOYMENT_CTV].bit = 5;
consensus.vDeployments[Consensus::DEPLOYMENT_CTV].nStartTime = 1774809000; // 30 March 2026
consensus.vDeployments[Consensus::DEPLOYMENT_CTV].nTimeout = 1806345000; // 30 March 2027
consensus.vDeployments[Consensus::DEPLOYMENT_CTV].min_activation_height = 1001952; // May 2027
consensus.vDeployments[Consensus::DEPLOYMENT_CTV].threshold = 1815; // 90%
consensus.vDeployments[Consensus::DEPLOYMENT_CTV].period = 2016;
```

Building Sustainable Bitcoin Circular Economies

> **Hermann Buhr Vivier on the long Game of Bitcoin circular economies - Africa Bitcoin Conference 2025**
>
> *The insights captured here are drawn directly from Hermann’s talk and his long-term work within the Ekasi community, reflecting real-world Bitcoin adoption built on years of trust, experimentation, failure, and persistence.*
>
> ## Introduction: The No Mushroom Philosophy for Bitcoin Circular Economies
>
> ![](https://m.stacker.news/129590)
>
> ## Hermann Buhr Vivier Background
>
> ![](https://m.stacker.news/129591)
>
> ## Brief History of Bitcoin Ekasi 
>
> ![](https://m.stacker.news/129588)
>
> ## What are Bitcoin Circular Economies and Why do they Matter?
>
> ![](https://m.stacker.news/129589)
>
> ## In Conclusion: Africa’s Bitcoin Circular Economy Movement
>
> [**...read more at blink.sv**](https://www.blink.sv/blog/building-sustainable-bitcoin-circular-economies)