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Avastars Contracts

Ethereum-based collectible avatars with on-chain artwork and metadata

Documentation

Developer setup, contract architecture, UML, and docs, trait hash bitmasking info, unit test output, and more are available at:

Repository Contents

/contracts

Ethereum smart contracts for the Avastar project

/data

Scripts, data, and logs for preparing deployed contracts for use

/docs

The project documentation, processed and redeployed upon each commit to Github.

/flat

The source code for the deployed contracts and their dependencies, flattened into long files, for uploading to etherscan.io for verification. Once Etherscan verifies the flattened file compiles to the exact bytecode of the deployed contract, the world can view the source code and interact with the contract methods via their web interface. These files were created with the shell script flatten-contracts.sh.

/migrate_partial, /migrations

The scripts for deploying the contracts. The AvastarMetadata and AvastarPrimeMinter contracts may be upgraded, and so the migrate_partial folder contains copies of the migrations scripts edited so as not to overwrite the AvastarTeleporter contract once deployed.

/poc

Our initial proof of concept, built in a single day, which gave us the confidence that we could do layered SVG on the blockchain. Also contains our further thoughts about how we would handle traits that depended upon other traits, such as a randomly chosen hair style using a randomly chosen hair color.

/solidoc

Our own customized version of the solidoc Solidity documentation generator. It is a great project, except it was abandoned in late 2018 and only included support for ^0.4.x versions of Solidity. After quite a bit of research, and no working projects satisfied our needs. So, upgrading this project seemed like the best approach. We put in a ton of effort to make it work but we're happy with the results. Of course now, there is Solidity ^0.6.x, and this code might or might not work with it. It would be a good starting point for if nothing else emerges. We may publish this one in a separate repo if we have time and/or someone would like to help push it forward to work with the latest Solidity versions.

/test

Our truffle unit tests for the project's smart contracts.

/util

Constants and various helper code used by tests and data processing scripts.

Deployment Overview

Migration (Rinkeby example)

truffle console --network rinkeby
truffle(rinkeby)> migrate --reset

Compiling your contracts...
===========================
> Everything is up to date, there is nothing to compile.


Starting migrations...
======================
> Network name:    'rinkeby'
> Network id:      4
> Block gas limit: 0x98705c


1_initial_migration.js
======================

   Replacing 'Migrations'
   ----------------------
   > transaction hash:    0xe0b6879b77a6b9f1b0f0c617b03d7b04b3836b9da01249939824c831e7a5c276
   > Blocks: 1            Seconds: 12
   > contract address:    0x3c204926311ff3a66D7CeAFcfe013F88D1Ea1888
   > block number:        5919726
   > block timestamp:     1580935975
   > account:             0x603158d642682E0D59b0Ab9d7e0c305EeA9C947a
   > balance:             9.443871763
   > gas used:            168286
   > gas price:           2 gwei
   > value sent:          0 ETH
   > total cost:          0.000336572 ETH


   > Saving migration to chain.
   > Saving artifacts
   -------------------------------------
   > Total cost:         0.000336572 ETH


2_deploy_contracts.js
=====================
Deploying contracts...

   Replacing 'AvastarTeleporter'
   -----------------------------
   > transaction hash:    0xa743237ade257f6284e52255cb4d3b70fd8555b279395d5239c2492311e9e9c3
   > Blocks: 0            Seconds: 12
   > contract address:    0x30E011460AB086a0daA117DF3c87Ec0c283A986E
   > block number:        5919728
   > block timestamp:     1580936005
   > account:             0x603158d642682E0D59b0Ab9d7e0c305EeA9C947a
   > balance:             9.432706301
   > gas used:            5540452
   > gas price:           2 gwei
   > value sent:          0 ETH
   > total cost:          0.011080904 ETH


   Replacing 'AvastarPrimeMinter'
   ------------------------------
   > transaction hash:    0x33c70c965c30c3190144448522400a38121f069c2ba856f1130ba8ea0ec982d9
   > Blocks: 0            Seconds: 12
   > contract address:    0x276c42D14067294747AA2f5d2F8E6e49864b306E
   > block number:        5919729
   > block timestamp:     1580936020
   > account:             0x603158d642682E0D59b0Ab9d7e0c305EeA9C947a
   > balance:             9.430592647
   > gas used:            1056827
   > gas price:           2 gwei
   > value sent:          0 ETH
   > total cost:          0.002113654 ETH


   Replacing 'AvastarMetadata'
   ---------------------------
   > transaction hash:    0x71a83f687fdae8b8aa4846761547f77274dd6b9e176e8731284be28087843cd9
   > Blocks: 0            Seconds: 12
   > contract address:    0x64f241F435bb11a035d4e2c139068A2ED979bb39
   > block number:        5919730
   > block timestamp:     1580936035
   > account:             0x603158d642682E0D59b0Ab9d7e0c305EeA9C947a
   > balance:             9.425590535
   > gas used:            2501056
   > gas price:           2 gwei
   > value sent:          0 ETH
   > total cost:          0.005002112 ETH

----------------------------------
Preparing AvastarMetadata contract
----------------------------------
Set teleporter contract address
Set Token URI Base
Set View URI Base
Set Media URI Base
Add admins
Unpause

------------------------------------
Preparing AvastarTeleporter contract
------------------------------------
Add admins, owners, minters
Set metadata contract address
Unpause

-------------------------------------
Preparing AvastarPrimeMinter contract
-------------------------------------
Set teleporter contract address
Add admins, owners, minters
Set current generation
Unpause


   > Saving migration to chain.
   > Saving artifacts
   -------------------------------------
   > Total cost:          0.01819667 ETH


Summary
=======
> Total deployments:   4
> Final cost:          0.018533242 ETH

Setup - Artist Attribution (Rinkeby example)

Must edit data/attribution/set-attribution.js, set artist info first!

truffle(rinkeby)> exec data/set-attribution.js
Using network 'rinkeby'.

Adding artist attribution for Generation 1...
Gas used: 114231

Setup - Create Traits (Rinkeby example)

Must edit data/traits/create-traits.js, set NETWORK constant, and comment out safety catch first!

truffle(rinkeby)> exec data/create-traits.js
Using network 'rinkeby'.

Environment / network...
TEST rinkeby
Fetching accounts...
Start from scratch with new log.
Processing raw database dump...
614 traits processed.
Adding traits to contract...
.
.
.

Setup - Create Promos (Rinkeby example)

Must edit data/promos/create-promos.js, set NETWORK constant, and comment out safety catch first!

truffle(rinkeby)> exec data/create-promos.js

Environment / network...
TEST rinkeby
Fetching accounts...
{ admins: [ '0x603158d642682E0D59b0Ab9d7e0c305EeA9C947a' ],
  owners: [ '0x0C3b27Fd4195E4C3849b96fDb8D1fB4846f7c198' ],
  minters: [ '0xC9063de7a2Db43EF77cf6C60DA2459426D89e78F' ] }
Cannot read property 'trim' of undefined
Start from scratch with new log.
Processing raw database dump...
200 promos processed.
Adding promos to contract...
.
.
.

License

  • Avastars - Copyright © 2019-Present nft42.

  • All rights reserved.

  • Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

    • Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
    • Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
    • Neither the name of nft42, Avastars, nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

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Ethereum contracts and unit tests for Avastars project

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