8 Bids

Bid Avg $523 USD

Budget $75 - 500 USD

Time expired

Project Description



sublingual_greg
  United States

Offline
Employer - 3 Reviews
100%
I want an api written in Golang using the Gin framework that returns data on ERC-20 coin transfers.

It should subscribe to "Transfer" events on an ERC-20 token contract address, for example the OmiseGo ERC-20 token 0xd26114cd6EE289AccF82350c8d8487fedB8A0C07
and, when it receives an event, it should add a row to a Postgres database.

It should listen for events using go-ethereum bindings to the json rpc https://github.com/ethereum/go-ethereum/wiki/Native-DApps:-Go-bindings-to-Ethereum-contracts

The postgres table schema should contain
id, sender address, receiver address, amount (floating point), datetime, transaction hash

I should be able to kick off a task to backfill all previous events, and the contract should listen for new events when the server is up and running.

Additionally, it should expose an endpoint "/transfers" which returns json all the token transfers for the token that the server is tracking.

It should have a couple tests that confirm core functionality.



Bids

victory4m

  Palestine

Offline

Freelancer - 1 Review

100%

"I can handle any kind of crypto. Project...Pls check our past work on ICO and crypto related work..coindan.Com, sleekarena.com, bitcoinoption.net we are proud that we can handle the project as you expected. thanks"

$680 USD



cannontorpid

  Egypt

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Freelancer - 6 Reviews

94%

"I can do it... Please drop me a message to further discuss."

$500 USD



Jennysmile

  United States

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Freelancer - 11 Reviews

92%

"I am an API expert and I can do this jo"

$500 USD



leibniz

  United States

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Freelancer - 34 Reviews

88%

"i can get it done perfectly"

$500 USD



techvision

  Germany

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Freelancer - 2 Reviews

20%

"Hi, i am a full stack mobile & web dev having similar technical skills & experience & have already worked on a similar project before so can do this Ref : https://www.2basetechnologies.com/portfolio
Great expertise in web applications development mainly on PHP, (Joomla, Wordpress, Codeigniter, Cake PHP), .NET, Asp.NET, Vb.NET, HTML 5 etc.& mobile apps"

$555 USD



Mentorrr

  United States

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Freelancer - 0 Reviews


"Let's get this done in a jiffy.
Buzz me.
101%"

$450 USD



JOHN lettna

  United States

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Freelancer - 0 Reviews


"will get your Job neatly done to your expectation."

$500 USD



AmandaJulie

  United States

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Freelancer - 0 Reviews


"I can guarantee you maximum satisfaction with my work.. Just further details will sort it all."

$500 USD



Type of Work

Cryptocurrency (creating / cloning / issues et.)

Skills

Go (Programming Language)
GoLang
Ethereum