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.

LBANK

LBANK

Does Binohash grinding behave like a PoW, and is it actually ASIC-resistant?

I've been reading Robin Linus's "Binohash" paper (Binohash:transaction introspection without softforks,https://delvingbitcoin.org/t/binohash-transaction-introspection-without-softforks/2288) and trying to understand the grinding process.

My rough understanding:

  • The spender chooses subsets of signatures from a fixed pool embedded in the locking script
  • Each subset changes the scriptCode via FindAndDelete before hashing
  • The goal is to find a subset where the resulting sighash satisfies a leading-zero condition

So in practice this looks like a search problem over combinatorial subsets rather than a simple nonce space.

Compared to Bitcoin mining:

  • Mining hashes a fixed-size header with a changing nonce
  • Binohash requires modifying KB-sized script data (via FindAndDelete) before each hash
  • Each transaction defines its own independent search space

My questions:

  1. Is it reasonable to think of this as a kind of PoW, or is that a misleading analogy?

  2. What actually limits ASIC acceleration here — the FindAndDelete step, the larger input size, or something else?

  3. Would a specialized ASIC still provide significant speedup, or is this inherently closer to a GPU-style workload?

  4. Does the fact that each transaction defines its own search space make this fundamentally non-competitive, unlike mining where everyone races on the same puzzle?



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