Questions tagged [data-validity]

The tag has no usage guidance.

Filter by
Sorted by
Tagged with
0 votes
1 answer
26 views

Verify a transaction response correctness

In my dapp users are sending transaction to my db, but a malicious user could just generate thousands of fake TransactionResponse and send them to the db, forcing me to check all of them to know if ...
user avatar
0 votes
1 answer
515 views

How to validate a transaction from any block in Blockchain

Given that we have a Blockchain with smart contracts. We have end users operating the platform for some time. Now one user wants to verify the claim of a transaction. Example, I have to prove that ...
user avatar
  • 152
0 votes
1 answer
196 views

Detect orphant or uncle block

At a specificed time, I got a block from physical node with number 10074305 and it returned hash 0xdd30541695c4e574839d2356a01ff19e68c8c90c180b8955623c5e0b4b7e864a (#0), then after a period time, this ...
user avatar
  • 25
1 vote
1 answer
55 views

Spending funds before the block is mined

Suppose I have an application that receives funds from users and instantly moves them into an associated cold storage account. If one of our nodes detects a transaction broadcast to one of our ...
user avatar
2 votes
0 answers
102 views

Why is NOT a protocol with a Turing-complete smart contract language able to use SNARKs to prove the validity of the chain?

In the following article (Link to the article: https://medium.com/nearprotocol/unsolved-problems-in-blockchain-sharding-2327d6517f43), the challenges of zk-SNARKs are mentioned as follows: The ...
user avatar
  • 2,518
2 votes
0 answers
32 views

The "Fisherman" idea for indirectly determining the validity of the canonical chain?

The following article explains the problem of validating a block in a cross-shard transaction in a sharded chain, along with existing solutions. One of the mentioned solutions is the "Fisherman" idea ...
user avatar
  • 2,518