Re: [bitcoin-dev] Building a Bitcoin API and query system.

From: Guido Dassori <guido.dassori@gmail•com>
To: bitcoin-dev@lists•linuxfoundation.org
Subject: Re: [bitcoin-dev] Building a Bitcoin API and query system.
Date: Tue, 28 Aug 2018 19:51:11 +0200	[thread overview]
Message-ID: <CAJ_Ap8iO6-ugd49JvyjiE6Ke0e9CfMwV50rOH1Bao2whufO-gA@mail.gmail.com> (raw)
In-Reply-To: <CA+9w0-4NHoWZ8zbB06OvhWL5Y51jP3P10Hz3K=G85NCPfKj2Cw@mail.gmail.com>

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Hi Sumit,

There's no protocol api to fetch a single transaction over the p2p network.
You can query peers for mempool transactions, but once there are into a
block, no way to obtain them without fetching the entire block.

Also, you may want to take a look to spruned (
https://github.com/gdassori/spruned), it uses both the electrum & the p2p
network to do the same job you are researching on. It serves the data by
emulating some of the bitcoind rpc api, to be suitable by bitcoind backed
applications.

Guido

Il giorno mar 28 ago 2018 alle ore 19:41 Blockchain Group via bitcoin-dev <
bitcoin-dev@lists•linuxfoundation.org> ha scritto:

> Thanks, I'll check it out.
>
> On Tue, Aug 28, 2018, 9:17 PM Matias Alejo Garcia <ematiu@gmail•com>
> wrote:
>
>> Hi Sumit,
>>
>> Take a look at https://github.com/bitpay/bitcore/tree/v8.0.0, it is a
>> bitcoin indexing API server, with several modules, like a block explorer, a
>> wallet module, etc. It is built using Node.js.
>>
>> matías
>>
>> On Tue, Aug 28, 2018 at 12:43 PM Joseph Gleason ⑈ via bitcoin-dev <
>> bitcoin-dev@lists•linuxfoundation.org> wrote:
>>
>>> For what it is worth, electrum has a lot or possibly all of what you are
>>> talking about since the electrum servers are designed to quickly answer the
>>> queries of light clients.  So right now, you could sync up an electrum
>>> server or use an existing public one and send queries to it with json-rpc.
>>>
>>>
>>> https://github.com/kyuupichan/electrumx/blob/master/docs/protocol-methods.rst
>>>
>>>
>>> On Tue, Aug 28, 2018 at 5:36 AM Blockchain Group via bitcoin-dev <
>>> bitcoin-dev@lists•linuxfoundation.org> wrote:
>>>
>>>> Hello everyone,
>>>>
>>>> I am C++ & Node.js developer. I want to propose making a new Bitcoin
>>>> API that supports fast quering of Bitcoin blocks and transactions without
>>>> the need for syncing with all previous nodes.
>>>>
>>>> In a typical case where I want to build a full fleged Bitcoin explorer
>>>> cum wallet system on my end with external APIs, I need to sync my node and
>>>> then query for the information I need to show separately. I am proposing a
>>>> unified method of finding/quering the blockchain data with a standardized
>>>> template containing minimal information about the actual mined block or
>>>> transaction yet satify the need of what I want to query.
>>>>
>>>> I am working on making a template and a support mechanism on Node.js. I
>>>> want to propose it as an improvement (BIP). It will be a great help to
>>>> future web developers who want to make something similar.
>>>>
>>>> Thanks
>>>> Sumit Lahiri.
>>>> _______________________________________________
>>>> bitcoin-dev mailing list
>>>> bitcoin-dev@lists•linuxfoundation.org
>>>> https://lists.linuxfoundation.org/mailman/listinfo/bitcoin-dev
>>>>
>>> _______________________________________________
>>> bitcoin-dev mailing list
>>> bitcoin-dev@lists•linuxfoundation.org
>>> https://lists.linuxfoundation.org/mailman/listinfo/bitcoin-dev
>>>
>>
>>
>> --
>> Matías Alejo Garcia
>> @ematiu
>> Roads? Where we're going, we don't need roads!
>>
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