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Tangem Wallet Pack of 2 - Secure Crypto Wallet - Trusted Cold Storage for Bitcoin, Ethereum, NFT's &

Tangem Wallet Pack of 2 - Secure Crypto Wallet - Trusted Cold Storage for Bitcoin, Ethereum, NFT's &
Key item features Ultimate Security: Generates a private key that remains on the card, safeguarding crypto and NFTs from hackers with EAL6+ certification and audited firmware. Versatile Compatibility: Manages over 13,000 tokens across 70+ blockchains, supporting DeFi, NFTs, and DeEx without wires, Bluetooth, or USB. Effortless Operation: Utilizes NFC for secure transactions via a mobile device and the Tangem app, enabling buying and selling crypto with various payment methods. Smart Backup: Features a second Tangem Wallet as a backup, eliminating the need for paper, pictures, or seed phrases for recovery. Durable Design: Boasts IP68 protection against environmental conditions, ensuring longevity and robust physical security. Comprehensive Support: Compatible with Bitcoin, Ethereum, Solana, XRP, USDT, and over 6,000 cryptocurrencies, integrating with dApps and WalletConnect.

Are chains of 26 unconfirmed transactions prohibited by the wallet in Bitcoin Core 31.0?

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...
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LBANK

LBANK

Are these multi-megabyte Tapscripts BitVM2 disprove / fraud-proof scripts? (945 KB and 3.9 MB, no CHECKSIG)

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
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Lost access to my Blockchain wallet

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
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A quick note on my recent P2P trading experience

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
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How Can I Recover My Lost Bitcoin Wallet

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
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What is the story behind Bitcoin test networks?

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
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What do you think of this proposal?

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...
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