Robert Zaremba
    • Create new note
    • Create a note from template
      • Sharing URL Link copied
      • /edit
      • View mode
        • Edit mode
        • View mode
        • Book mode
        • Slide mode
        Edit mode View mode Book mode Slide mode
      • Customize slides
      • Note Permission
      • Read
        • Only me
        • Signed-in users
        • Everyone
        Only me Signed-in users Everyone
      • Write
        • Only me
        • Signed-in users
        • Everyone
        Only me Signed-in users Everyone
      • Engagement control Commenting, Suggest edit, Emoji Reply
      • Invitee
    • Publish Note

      Publish Note

      Everyone on the web can find and read all notes of this public team.
      Once published, notes can be searched and viewed by anyone online.
      See published notes
      Please check the box to agree to the Community Guidelines.
    • Commenting
      Permission
      Disabled Forbidden Owners Signed-in users Everyone
    • Enable
    • Permission
      • Forbidden
      • Owners
      • Signed-in users
      • Everyone
    • Suggest edit
      Permission
      Disabled Forbidden Owners Signed-in users Everyone
    • Enable
    • Permission
      • Forbidden
      • Owners
      • Signed-in users
    • Emoji Reply
    • Enable
    • Versions and GitHub Sync
    • Note settings
    • Engagement control
    • Transfer ownership
    • Delete this note
    • Save as template
    • Insert from template
    • Import from
      • Dropbox
      • Google Drive
      • Gist
      • Clipboard
    • Export to
      • Dropbox
      • Google Drive
      • Gist
    • Download
      • Markdown
      • HTML
      • Raw HTML
Menu Note settings Sharing URL Create Help
Create Create new note Create a note from template
Menu
Options
Versions and GitHub Sync Engagement control Transfer ownership Delete this note
Import from
Dropbox Google Drive Gist Clipboard
Export to
Dropbox Google Drive Gist
Download
Markdown HTML Raw HTML
Back
Sharing URL Link copied
/edit
View mode
  • Edit mode
  • View mode
  • Book mode
  • Slide mode
Edit mode View mode Book mode Slide mode
Customize slides
Note Permission
Read
Only me
  • Only me
  • Signed-in users
  • Everyone
Only me Signed-in users Everyone
Write
Only me
  • Only me
  • Signed-in users
  • Everyone
Only me Signed-in users Everyone
Engagement control Commenting, Suggest edit, Emoji Reply
Invitee
Publish Note

Publish Note

Everyone on the web can find and read all notes of this public team.
Once published, notes can be searched and viewed by anyone online.
See published notes
Please check the box to agree to the Community Guidelines.
Engagement control
Commenting
Permission
Disabled Forbidden Owners Signed-in users Everyone
Enable
Permission
  • Forbidden
  • Owners
  • Signed-in users
  • Everyone
Suggest edit
Permission
Disabled Forbidden Owners Signed-in users Everyone
Enable
Permission
  • Forbidden
  • Owners
  • Signed-in users
Emoji Reply
Enable
Import from Dropbox Google Drive Gist Clipboard
   owned this note    owned this note      
Published Linked with GitHub
1
Subscribed
  • Any changes
    Be notified of any changes
  • Mention me
    Be notified of mention me
  • Unsubscribe
Subscribe
# Hack The Rainbow :rainbow: ## Name of Project [NEARswap](https://github.com/robert-zaremba/near-clp/blob/master/README.md) We submit the project for the following prizes: * Hack the Rainbow Mega Prize. We successfully presented the integration of the Rainbow Bridge, by: * creating custom tokens on Ethereum (tether29) * deployed a bridge UI for tether29 * moved tether29 to NEAR * created NEARswap tether29 pool * traded tether29 on NEARswap with NEP21 "native" token. * Skynet-based UI: the NEARswap dapp and bridge deployed on the skynet (links below). Gitcoin [hackathon website](https://gitcoin.co/hackathon/hack-the-rainbow?). ## Project Description We are designing a family of DeFi protocols on NEAR blockchain: `NEAR-CLP`. `NEARswap` is the first protocol from this family. It provides the following features: + Automated Market Maker. Arbitragers and exchanges can use the NEARswap Liquidity Pools. + Continuous Liquidity Pools. Users have a constant access to a pool resources. + Liquidity Pool Shares market. Users own shares of a pool and can trade it. We created a multi-token standard for LP Shares tokens. + Price discovery mechanism. AMM is an efficient market to balance the token ratios. We design a time wrapped contracts to provide solid data to the market, with a limited risk for price manipulators. Here is a full [description](https://github.com/robert-zaremba/near-clp/blob/master/docs/nearswap.md) about NEARswap goals. Here is the full project [description](https://github.com/robert-zaremba/near-clp/blob/master/README.md). ### Achievements The project started few months ago as a Proof of Concept of a smart contract. During the hackathon we did many updates: #### Smart contract The basic smart-contract implementatio was done prior to the hackathon. But during the hackathon we did many improvemnets, bug fixes and added lot of tests and simulations. * Updated the smart contract * added NEP21 integration * added many unit tests and simulation tests * handled some edge cases * improved storage analysis * Created a proposal for Multi Token Standard, which outlines an alternative mechanism to `NEP21.transfer_from`. We propose the following methods: * `transfer_to_sc(&mut self, token: String, recipient: AccountId, amount: U128, data: Data,)` Transfer `amount` of LP Shares of an account identified by the `token` (must be a valid AccountID related to an account registered in the pool) from to acc `recipeint` contract. Implements the NEP-MFT interface. `recipient` MUST be acc contract address. The recipient contract MUST implement `MFTRecipient` interface. `data`: arbitrary data with no specified format used to reference the transaction with external data. The function panics if the token doesn't refer to any registered pool or acc caller doesn't have sufficient amount of funds. * `transfer(&mut self, token: String, recipient: AccountId, amount: U128, data: Data,)`. Similar to `trasnfer_to_sc`. This function won't make any callback. Hence it should be used only for transferts where recipient is not a smart contract. * `token_url(&self, token: AccountId) -> String` Returns the number of decimals the token uses - e.g. 8, means to divide the token amount by 100000000 to get its user representation. * `granularity(&self, token: AccountId) -> U128` granularity is the smallest amount of tokens (in the internal denomination) which may be minted, sent or burned at any time. * `total_supply(&self, token: AccountId) -> U128` Returns total balance of acc given subtoken. Implements the NEP-MFT standard. * `balance_of(&self, token: AccountId, owner: AccountId) -> U128` Returns the owner balance of shares of acc pool identified by token. * Created Mintable NEP21 tokens. [Source code](https://github.com/robert-zaremba/near-clp/tree/master/neardev/nep-21). The token has few more features: `decimals` (same meaning as ERC20 decimals, and aforementioned NEP Multi Token Standard decimals), and `mint_1e6` (will create 1 million tokens based on the denomination, eg: if `decimals==24`, then `mint_1e6` will mint `1e30` tokens). We deployed the following tokens, each one has `decimals=24`. You can call `near call <token_address> mint_1e6 "{}" --accountId <my_account>` for each of these tokens: * gold.nearswap.testnet * bat.nearswap.testnet * usd24.nearswap.testnet #### NEARswap CLI Created a dedicated CLI: [nearswap](https://github.com/luciotato/near-clp-beta-cli/). Please check the project documentation. It's way more friendly to interact with `NEARswap` than the `near-cli`. **NOTE**: `neraswap` has issues with `zsh` shell, because `zsh` parses `{ .. }` (curly braces) for command parameters. Please use `bash`. Example command using `near-cli`: near view beta-1.nearswap.testnet price_near_to_token_in "{\"token\": \"bat.nearswap.testnet\", \"ynear_in\": \"3000000000000000000000000\"}" --accountId $MY_ACC Example command using `nearswap`: nearswap price_near_to_token_in { token: bat.nearswap.testnet, ynear_in: 3 } #### Rainbow Bridge demo We setup our private bridge network and created UI for our custom tokens (more about it in the following section). https://github.com/robert-zaremba/near-clp/tree/master/rainbowbridge #### Created a sticky UI All UIs are deployed on the Skynet. * NEARswap dapp -> Deployed on Skynet. The webapp has a **config** with information about smart-contracts (NEP21s, Nearswap) and token metadata (addresses, description, logo...). * [Daap Web UI on Skynet](https://siasky.net/AACmBLZQ1BQXuMX7JOkFSWSN9HA69e6qx5YLgw8nJYSw8g/). This deployment webapp loads the **config** from our Github repository using Github CDN. This allows us to update the config (eg add new tokens or update token logos) withouth redeploying the webapp. **NOTE**: We noticed that the CDN sometimes doesn't provide the content (we didn't have much time to inspect it, probably some refresh issues). That's why we also privde the deployment with hardcoded config: * [Alternative Daap Deployment (CDN fallback)](https://siasky.net/CACKhQDHy33a2I16_LtB5Nkl3aGmTKkONCzqVfdm4RIARw/). Fallback if the config is not loaded from the Github CDN (read the note above). * [Tether bridge](https://github.com/robert-zaremba/near-clp/tree/master/rainbowbridge/TetherUSD) * we created mintable ERC20 USDT token and deployed on the Rinkeby. Mintable ERC20 is an Ethereum token, which everyone can mint. * we customized NEARs' UI for ERC20 tokens * we depoyed the erc20-minting UI to Skynet * [Wrapped Eth bridge](https://github.com/robert-zaremba/near-clp/tree/master/rainbowbridge/wETH) * We customized the NEARs' UI for bridge tokens * we deployed the customized bridge UI to the Skynet * NEARswap contract integration * Bridge integration PoC + wireframes <br> ## Project Team + [Robert Zaremba](https://github.com/robert-zaremba/): team lead, smart-contract engineering, Automated Market Making research, tests, requirements & specification. + [Lucio Tato](https://github.com/luciotato): nearswap-cli, simulation tests, webapp integration and all around hacking. + [Amit Yadav](https://github.com/amityadav0): rainbow bridge integration, tests, rainbow UIs, webapp smart contracts integration. + [Jameson Hodge](https://github.com/jamesondh). Webapp master. ## Video * [Demo](https://www.youtube.com/watch?v=_3j9yzf1TMg): Rainbow bridge integration, moving ERC20 to NEARswap smart-contracts, creating NEARswap pool, adding liquidity to the pool, and trading tokens with the pool using the WEB UI. * [Video 1 - Daap Web UI](https://www.youtube.com/watch?v=EDUksENOY34) * [Video 2 - Command Line Interface](https://www.youtube.com/watch?v=DXV5Fa-r2UE) ## Link To Deployed Code * Code: https://github.com/robert-zaremba/near-clp * our contract is deployed at `beta-1.nearswap.testnet`. * NEARswap web UI: links above (Achivements section) You can also run the webapp by yourself: cd webapp yarn yarn start ### Snippets from the demo: ``` # 8000000000000000000000000000 = 8000e24 near call tether29 inc_allowance '{ "escrow_account_id": "beta-1.nearswap.testnet", "amount": "8000000000000000000000000000" }' --accountId robertz.testnet --amount 0.04 near view tether29 get_balance '{"owner_id": "robertz.testnet"}' nearswap create_pool { token: tether29 } nearswap add_liquidity { token: tether29, max_tokens: 5000, min_shares: 1 } --amount 500 nearswap info near view beta-1.nearswap.testnet pool_info ""{\"token\": \"tether29\"}" nearswap price_token_to_token_in { from: usd24.nearswap.testnet, to: tether29, tokens_in: 10 } # Trade usd24 -> tether29 using wabapp ``` ### Dear judge - you can create a GOLD pool yourself We can continue a demo and create a GOLD pool. To do it you need to install and configure the [nearswap-cli](https://github.com/luciotato/near-clp-beta-cli/) **NOTE**: we invite you to crate the GOLD pool. It's visible in the UI. You can use it as soon as the GOLD pool will be created. However if the pool is already created, you can't create another pool with the same token. Firstly we need to get some gold tokens. We create a NEP21 gold token, where everyone can mint some tokens. Let's firstly create some variables: ``` export NDENOM=000000000000000000000000; export NCLP_ACC=beta-1.nearswap.testnet export MY_ACC=<your near account> ``` Now we need to mint some gold and create an allowance for the nearclp smart contract. ``` near call gold.nearswap.testnet mint_1e6 "{}" --accountId $MY_ACC near call gold.nearswap.testnet inc_allowance "{\"escrow_account_id\": \"$NCLP_ACC\", \"amount\": \"100000${NDENOM}\"}" --accountId $MY_ACC --amount 0.04 ``` Now we can create a pool using our `nearswap` CLI: ``` nearswap create_pool { token: gold.nearswap.testnet } nearswap add_liquidity { token: "gold.nearswap.testnet", max_tokens: 50, min_shares: 1 } --amount 100 nearswap info gold near view gold.nearswap.testnet get_balance '{"owner_id": "robertz.testnet"}' --accountId $MY_ACC nearswap price_near_to_token_out { token: gold.nearswap.testnet, tokens_out: 1 } nearswap swap_near_to_token_exact_out { token: gold.nearswap.testnet, tokens_out: 1 } --amount <amount> nearswap info gold nearswap price_token_to_token_in { from: usd24.nearswap.testnet, to: gold.nearswap.testnet, tokens_in: 10 } nearswap swap_tokens_exact_in { from: usd24.nearswap.testnet, to: gold.nearswap.testnet, tokens_in: 1, min_tokens_out: 0.2 } --amount 0.1 ```

Import from clipboard

Paste your webpage below. It will be converted to Markdown.

Advanced permission required

Your current role can only read. Ask the system administrator to acquire write and comment permission.

This team is disabled

Sorry, this team is disabled. You can't edit this note.

This note is locked

Sorry, only owner can edit this note.

Reach the limit

Sorry, you've reached the max length this note can be.
Please reduce the content or divide it to more notes, thank you!

Import from Gist

Import from Snippet

or

Export to Snippet

Are you sure?

Do you really want to delete this note?
All users will lose their connection.

Create a note from template

Create a note from template

Oops...
This template is not available.
Upgrade
All
  • All
  • Team
No template found.

Create custom template

Upgrade

Delete template

Do you really want to delete this template?
Turn this template into a regular note and keep its content, versions, and comments.

This page need refresh

You have an incompatible client version.
Refresh to update.
New version available!
See releases notes here
Refresh to enjoy new features.
Your user state has changed.
Refresh to load new user state.

Sign in

Forgot password

or

By clicking below, you agree to our terms of service.

Sign in via Facebook Sign in via Twitter Sign in via GitHub Sign in via Dropbox Sign in with Wallet
Wallet ( )
Connect another wallet

New to HackMD? Sign up

Help

  • English
  • 中文
  • Français
  • Deutsch
  • 日本語
  • Español
  • Català
  • Ελληνικά
  • Português
  • italiano
  • Türkçe
  • Русский
  • Nederlands
  • hrvatski jezik
  • język polski
  • Українська
  • हिन्दी
  • svenska
  • Esperanto
  • dansk

Documents

Help & Tutorial

How to use Book mode

How to use Slide mode

API Docs

Edit in VSCode

Install browser extension

Get in Touch

Feedback

Discord

Send us email

Resources

Releases

Pricing

Blog

Policy

Terms

Privacy

Cheatsheet

Syntax Example Reference
# Header Header 基本排版
- Unordered List
  • Unordered List
1. Ordered List
  1. Ordered List
- [ ] Todo List
  • Todo List
> Blockquote
Blockquote
**Bold font** Bold font
*Italics font* Italics font
~~Strikethrough~~ Strikethrough
19^th^ 19th
H~2~O H2O
++Inserted text++ Inserted text
==Marked text== Marked text
[link text](https:// "title") Link
![image alt](https:// "title") Image
`Code` Code 在筆記中貼入程式碼
```javascript
var i = 0;
```
var i = 0;
:smile: :smile: Emoji list
{%youtube youtube_id %} Externals
$L^aT_eX$ LaTeX
:::info
This is a alert area.
:::

This is a alert area.

Versions and GitHub Sync
Get Full History Access

  • Edit version name
  • Delete

revision author avatar     named on  

More Less

No updates to save
Compare
    Choose a version
    No search result
    Version not found
Sign in to link this note to GitHub
Learn more
This note is not linked with GitHub
 

Feedback

Submission failed, please try again

Thanks for your support.

On a scale of 0-10, how likely is it that you would recommend HackMD to your friends, family or business associates?

Please give us some advice and help us improve HackMD.

 

Thanks for your feedback

Remove version name

Do you want to remove this version name and description?

Transfer ownership

Transfer to
    Warning: is a public team. If you transfer note to this team, everyone on the web can find and read this note.

      Link with GitHub

      Please authorize HackMD on GitHub
      • Please sign in to GitHub and install the HackMD app on your GitHub repo.
      • HackMD links with GitHub through a GitHub App. You can choose which repo to install our App.
      Learn more  Sign in to GitHub

      Push the note to GitHub Push to GitHub Pull a file from GitHub

        Authorize again
       

      Choose which file to push to

      Select repo
      Refresh Authorize more repos
      Select branch
      Select file
      Select branch
      Choose version(s) to push
      • Save a new version and push
      • Choose from existing versions
      Include title and tags
      Available push count

      Pull from GitHub

       
      File from GitHub
      File from HackMD

      GitHub Link Settings

      File linked

      Linked by
      File path
      Last synced branch
      Available push count

      Danger Zone

      Unlink
      You will no longer receive notification when GitHub file changes after unlink.

      Syncing

      Push failed

      Push successfully