LBANK INFO CRYPTOCURRENCY

I built a Taproot address with a SHA256-hashlock leaf ( OP_SHA256 <h> OP_EQUALVERIFY OP_TRUE , preimage "helloworld" ). On mainnet I spent that leaf — the witness necessarily contains the preimage and the leaf script. Within a few minutes, a different transaction spent the same UTXO to an unrelated address, paying a far higher fee, and confirmed instead of mine: my spend: 44bb85269ffacd88903154e8e2af0d4963ba4022cc57e706b5819fd008e978d3 (replaced) the replacement: 9fc1923c513cdf5a620ef88f61dbc3997e697cad0381b6f6c28827e4332dc363 （ link ) My understanding is that spending a hashlock reveals the preimage in the public mempool before confirmation , and under default full-RBF anyone can broadcast a higher-fee conflicting spend of the same output. Is this the correct explanation? Is automated "sweeping" of revealed-preimage / anyone-can-spend outputs a known, active phenomenon on mainnet, and is there any way to spend such an output without expos...

I was testing Bitcoin Core 31.0 to see if I could make chains of unconfirmed transactions longer than 25. Release notes say: The mempool no longer enforces ancestor or descendant size/count limits. Instead, two new default policy limits are introduced governing connected components, or clusters, in the mempool, limiting clusters to 64 transactions and up to 101 kB in virtual size. Transactions are considered to be in the same cluster if they are connected to each other via any combination of parent/child relationships in the mempool. These limits can be overridden using command-line arguments; see the extended help (-help-debug) for more information. Does this only hold for transactions being relayed to my node, and not for transactions my wallet creates? Does the wallet still enforce the 25 txn limit during a transition period until the new mempool policy is more widespread? The following script on a newly started Bitocoin Core 31.0 regtest node fails on the last co...

4d7d18183be26673221121fe21a989215f8a76600e5db0a1311aad64a0afcdaa — block 898457, tapscript 945,706 B , 497 witness items.（ link ) 8ecfefd438a229c7cea10f6973f49d8bbe3a620fd557f7f2cb3658ac59510249 — block 899747, tapscript 3,941,840 B , 859 witness items.( link ) ~9 days apart (2025-05); fee ≈ $785 and $11580; flagged Non-Standard. Opcode profile (push-aware): hundreds of thousands of OP_ADD / OP_PICK / OP_ROLL / OP_SUB , OP_TOALTSTACK / OP_FROMALTSTACK (alt-stack as memory), OP_IF / OP_ENDIF ~150k each, OP_HASH160 ladders; no signature opcode . Questions: (1) Are these BitVM2 mainnet disprove scripts? (2) What computation do they encode (and which step/gate)? (3) Is the deployment publicly documented (operator / repo)? from Recent Questions - Bitcoin Stack Exchange https://ift.tt/CBJyhU7 via IFTTT

I still have the email address and password to my Blockchain account but can't have access to my wallet due to my inability to provide the seed phrase linked to my wallet. from Recent Questions - Bitcoin Stack Exchange https://ift.tt/JBZG1Hy via IFTTT

I recently needed to do a BTC trade and ended up using CryptoSNearby. The trade went through smoothly, escrow worked as expected, and I didn't run into any issues during the process. Just sharing my experience since I see people asking about P2P options from time to time. Curious if anyone else here has tried it and how it went for them. from Recent Questions - Bitcoin Stack Exchange https://ift.tt/b16ltpT via IFTTT

I lost $1.7 million worth of Bitcoin to a fake investment platform that initially appeared legitimate. After seeing fake profits, I invested more, only to be blocked from withdrawing my funds. I felt completely hopeless until I contacted BitCrack Recovery Solutions (BRS). Their team quickly began tracing my stolen Bitcoin using advanced blockchain forensic tools and kept me informed throughout the process. Within a short time, they successfully recovered my funds. I’m incredibly grateful for their expertise and professionalism. from Recent Questions - Bitcoin Stack Exchange https://ift.tt/QmXfFR4 via IFTTT

What differences did each one propose in comparison to the previous network? What was the reason for each testnet to be introduced? When was each test network introduced? The question includes from Testnet 1 to 4 (or even 5) and signet(s). There are two similar questions 36252 and 9975 , but they are old and outdated. I am looking for a detailed historical description and motivation about each test network introduction. from Recent Questions - Bitcoin Stack Exchange https://ift.tt/JsV94tP via IFTTT

Abstract: This proposal introduces a policy-level optimization to the Bitcoin Core mempool validation layer to mitigate potential Denial-of-Service (DoS) vectors stemming from high-frequency, low-weight transaction submissions. By enforcing strict minimum transaction weight rules relative to input structures during the initial policy validation phase, nodes can filter out non-standard, economically unviable transaction paths before allocating critical CPU validation time or propagating them further across the peer-to-peer network. Motivation: The Bitcoin mempool framework relies on policy checks to prevent resource exhaustion attacks. While minimum relay fees filter out standard spam, specific anomalies involving transactions with abnormally low weights relative to their execution overhead can introduce unnecessary validation strain. Implementing an early-stage weight filter within the standard transaction validation sequence provides an explicit, lightweight layer of def...

I want to make sure my Bitcoin Core node is working correctly. Are there any tools to test it — such as querying node status or sending test transactions? from Recent Questions - Bitcoin Stack Exchange https://ift.tt/rAFwhmt via IFTTT

Should I sell now and pay AUD 8,320 on an AUD 26,000 gain, or wait a few months and pay only 50% — but risk the price dropping by then? 🤔🤔 https://money-snap.com/au/crypto-tax-calculator/ from Recent Questions - Bitcoin Stack Exchange https://ift.tt/SGlmcZx via IFTTT

Visit BitCrack Recovery Solutions for Help To Recover Your lost cryptocurrency to a fake investment platform, Forgotten Seed Phrase On Your Wallet, Scammed Forgotten Password. Contact BitCrack Recovery Solutions Website:  bcrexpertsolution.com Email: bitcrackrecoveryexperts@bitcrack.co.site Email: info@bcrexpertsolution.com WhatsApp : +44 7562 744552 from Recent Questions - Bitcoin Stack Exchange https://ift.tt/OfHYNDr via IFTTT

I'm planning to build a wallet service with the following features: Query balance Query transaction history Send transactions I want to self-host a Bitcoin Core Node as my RPC Node. Since this is my first time running a Core Node in a production environment, I'd like to ask: 1.High Availability — Should I run multiple nodes for failover? What's the recommended setup? 2.Monitoring & Sync — How do I monitor whether my node is properly synced? Are there any recommended tools or metrics? Also, is block lag completely unacceptable for a wallet service, or is there a tolerable range? 3.General best practices — What does the community recommend for running a Bitcoin Core RPC Node in production? Any advice or recommended tools would be appreciated. Thanks! from Recent Questions - Bitcoin Stack Exchange https://ift.tt/VGHy1nk via IFTTT

I have been working alongside several fintech founders lately, and one question keeps surfacing in nearly every conversation. How do you build a fully functional crypto bank in 2026 without spending two years and several million dollars doing it? The honest answer that most people are not discussing openly is white label infrastructure. And before anyone dismisses this as a shortcut, let me explain why it is actually the smarter, more strategic route for almost every type of company entering this space right now. A white label crypto bank is not a stripped-down product. The best solutions available today include full digital banking modules — IBAN accounts, card issuance, stablecoin settlement, real-time transaction monitoring, multi-chain wallet integration, compliance modules like KYC, AML, Travel Rule, and zKYC, and even treasury management for enterprise clients. These are not prototypes. These are production-ready systems built and tested at scale. The real differe...

In 2026 there are multiple softforks under discussion and especially proponents of one softfork proposal are claiming that a softfork attempt always succeeds unless it is actively opposed, even if the softfork only has support of a minority of the hashrate. Is it true that a softfork attempt will always succeed? from Recent Questions - Bitcoin Stack Exchange https://ift.tt/S9KIxvE via IFTTT

I want to set up the latest Bitcoin Core version to mine a block that is valid after the BIP-110 is activated (two months from now). What are the steps to do at minimum? I want to make sure that a block is not rejected by the Bitcoin P2P network. BIP-110 specification: https://github.com/bitcoin/bips/blob/master/bip-0110.mediawiki from Recent Questions - Bitcoin Stack Exchange https://ift.tt/PpcVdRX via IFTTT

Say I sent my friend 1₿ at the rate of $70k/₿ and he repays me back when the exchange rate is $60k/₿. Do I make a profit? from Recent Questions - Bitcoin Stack Exchange https://ift.tt/yuvEZlf via IFTTT