Questions tagged [query]

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About the balance of specific address

I have a question about how to figure out balance of specific address in the Bitcoin. There are many node in the blockchain(total # of nodes are 10000 based on 01/16/2019). but some nodes may have ...
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1answer
19 views

What is a mechanism of method how to get the data in the blockchain(e.g. bitcoin, ethereum)?

There are websites which have APIs that allow you to trace transactions and lookup information like specific address balances, etc. I am wondering how these web service providers are able to provide ...
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0answers
16 views

how to run a query for size of tranactions?

how do I run a query for size of transactions in terms of size of bitcoin? Or better yet, is there a key for all the output?
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1answer
451 views

Is there a way to query the blockchain locally if I am running a full node?

I'm running a full node on my PC and wondering if there is a way to query the blockchain locally via NodeJS instead of going through blockchain.info? It is very inefficient/slow to run queries through ...
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1answer
86 views

Filter transactions by time on a given address

Is there an API that will list all transactions made on a given wallet address with the ability to filter by date? I prefer nodejs, but open to other suggestions.
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1answer
560 views

Bitcoin blockchain in mongodb

How bad would it be to use MongoDB as a Bitcoin database instead of LevelDB? I know that LevelDB is faster but I've also read that MongoDB is better for doing queries. It seems cleaner to store the ...
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3answers
3k views

How to learn to query the block chain?

I want to find out how many addresses have had x transactions over time. I want to find out the average bitcoin transaction size for over time...I want to do a bunch of different queries like that ...
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1answer
401 views

how to get realtime new transaction data in nodejs from bitcore

I want to run a private node, and use it to receive realtime unconfirmed transactions data into my nodejs script. How do I go about this?
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2answers
1k views

Is there any tool available that can tell me the balance of bitcoin address on specific date?

Is there any tool available that can tell me the balance of bitcoin address on specific date? Like, what was the balance of 1XXXXXX on Jan 1st 2016? Looked up insight: seems not available.
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2answers
359 views

retrieve all the transaction between two addresses

I've used this query to try to get all the transaction between two addresses: https://blockchain.info/multiaddr?active=1EipJdYVJbqsTSQhj1icK424AkMbyjvgBm|1LWwLvKWbcpiZYqCcwfuQ3gjjNJkxftmEJ but the ...