Bitcoin #Blake2b mining pool. 0% fees with DATUM, & earn bonus XBT from Sv1 incentive fees. Onboard to Lightning with Paperclip LSP.paperclip-xbt.xyzJoined September 2026
We’d like to thank @secondhq for providing Paperclip Ark with the needed patch to prevent this boarding attack from occurring on our own Ark server.
No funds (the server’s, users’, or otherwise) have been affected.
ark.paperclippool.xyz
1/ On Monday 5 Oct an attacker exploited a bug in our Ark server's boarding flow and took 0.75 BTC of Second's own liquidity. No user funds were affected.
Paperclip mining is back online.
The main outage lasted approximately 7 hours and 27 minutes, from October 4 at 23:37 UTC to October 5 at 07:04 UTC.
Our hosting provider identified infrastructure connectivity issues and migrated the pool VPS to another host to restore service. The provider confirmed that the original disks, wallets, databases, and payout records were preserved.
Mining is active again, and Lightning and Ark have also been switched back from our backup node to the primary backend.
Thank you for your patience.
Paperclip Pool is currently experiencing a service outage. We’re investigating and working to restore access as quickly as possible.
We’ll share an update once service is restored. Thank you for your patience.
Paperclip Wallet v0.8.3 beta is available for Umbrel and Start9.
This update adds Lightning payment prechecks, clearer payment status, and automatic reimbursement of eligible failed-payment recovery costs.
Back up your complete wallet, then update:
ark.paperclippool.xyz/wallet/
Paperclip Wallet 0.8.2
Ordinary Ark transfers use 33.5% less recovery funding on the updated Paperclip ASP: 2,660 sats without change or 3,990 with change for one input.
ark.paperclippool.xyz/wallet/
To briefly explain why Ark transaction fees may presently be higher than expected:
Our tests found that Bark-style recovery packages aren’t accepted by the Knots default relay policy we tested. Bark uses zero-fee parent transactions with zero-value anchors, then pays the package’s fees through a child transaction. Knots’ default dust policy rejected that arrangement; configurations rejecting version-3 transactions also blocked it.
This is a relay-policy issue, not evidence of an RDTS consensus violation. It explains why Paperclip currently uses individually funded recovery transactions—and why we’re working to reduce those reserves without relying on special node settings.
We just open-sourced our Blake2b-compatible version of captaind, the server implementation behind @secondhq’s Bark and utilized by Paperclip Ark.
Check it out here:
github.com/connorslab/pap…
Paperclip Wallet 0.8.0 beta
•Reusable BOLT12 receiving through a compatible Paperclip ASP. Keep the wallet service online to answer invoice requests; closing the browser is fine.
•Locally generated receiving QR codes for on-chain, Ark, and Lightning.
•BIP322-simple message signing and verification for wallet-owned Taproot on-chain addresses.
Back up the complete wallet data before upgrading. Do not downgrade after creating a reusable offer: old binaries cannot read its checkpoint. A seed alone does not contain all Ark recovery state.
ark.paperclippool.xyz/wallet/
Implemented and released as 0.7.7.
Shows recipient amount, recovery reserve, service fee, and total debit before sending.
Rejects any cost increase above the approved total.
Adds authenticated POST /api/v1/fees/ark/send.
ark.paperclippool.xyz/wallet/
@PaperclipPool@secondhq@ConnorsLabYT One piece of feedback for small payments: with the funded recovery profile, an Ark send reserves about 6,000 sats. An endpoint to estimate the Ark-send cost before paying would also help a lot.
The code is open: github.com/Kilombino/pape… (branch kilombino-esplora)
Paperclip Ark Beta is live.
Based on @secondhq’s Bark, Paperclip is bringing Ark capabilities to XBT. Pay lightning invoices without managing channels and much more.
Find out more at ark.paperclippool.xyz
Paperclip’s Lightning LSP is now open for orders.
Purchase inbound liquidity for Bitcoin Blake2b (XBT), with 0.05, 0.10 and 0.25 XBT channels. Choose public or private; pay on-chain.
Your node. Your keys.
lightning.paperclippool.xyz/liquidity
Make sure to peer w/ Paperclip before ordering.
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