Questions tagged [spv]

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Can SPV proofs in Ethereum make lightweight clients verify that transactions are not in a block?

SPV proofs can help lightweight clients believe that a transaction is actually in a certain block by Merkle path. In Bitcoin, lightweight clients can't distinguish whether the transaction that they ...
gonev's user avatar
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2 votes
0 answers
55 views

How does the Merkle proof mechanism exactly work in Ethereum? This is straightforward in bitcoin but

I've searched this site and elsewhere but can't find anywhere this is explained. In bitcoin, it's straightforward. If you're a light client (SPV) in bitcoin, I understand how with the regular Merkle ...
Ashwin Parcha's user avatar
5 votes
0 answers
29 views

ETH2.0 Lightweight Clients?

Is it possible have SPV clients in ETH2.0? It feels like PoS cannot benefit from spv verification.
Brqoo's user avatar
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1 vote
1 answer
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How to validate a BTC transaction in an Ethereum smart contract?

Can an Ethereum smart contract use SPV to validate a BTC or BCH transaction? If so, are there any functioning libraries? What are the drawbacks or challenges when doing so?
Jesbus's user avatar
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2 votes
1 answer
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Sidechain communication with mainchain

I was exploring sidechains and two-way pegs but didn't clearly understand one point: How does a sidechain know if funds are locked in the main chain? To my understanding blockchains are "isolated" ...
kuzdogan's user avatar
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0 answers
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how to check if a block has a transaction to an address only by using the block header

Question is self explanatory. How can I check if a block has a transaction to or from an address only by using the block header? Question is prompted by this comment - How to explore all ...
arshbot's user avatar
  • 357
4 votes
1 answer
2k views

Ethereum account model - SPV proofs possible?

Ethereum does use an account-model and not like Bitcoin an UTXO model. Is it possible to do SPV-proofs in Ethereum and if so, can you please explain how to do it? Correct me if I'm wong. The state ...
Ini's user avatar
  • 434
15 votes
5 answers
4k views

How to experiment with Ethereum without downloading the entire blockchain?

I want to experiment with Ethereum without having to download the entire blockchain. My ISP limits my bandwidth to 50GB and downloading the ETH chain would consume a lot of that, not to mention the ...
Jus12's user avatar
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8 votes
2 answers
2k views

Light clients for android

I am trying to develop an android wallet using Ethereum go and I ran the DroidGeth from this link. I tried to ran ethereum on the testnet, but its taking for ever to download the blockchain. How can ...
jgm's user avatar
  • 505
13 votes
1 answer
645 views

Are light nodes possible in Casper?

My understanding of light nodes is they need PoW in the block headers. That PoW proves that $x amount of energy has gone into securing that chain. With PoS, the proof that $y is securing the chain ...
A F's user avatar
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8 votes
2 answers
3k views

Is there any SPV client for ethereum?

I am looking to move some ETH from an exchange to a wallet for which I control the keys. I don't, however, want to download the whole blockchain. Is there a good SPV client I can use?
Randomblue's user avatar
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