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‎.editorconfig

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# http://editorconfig.org
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root = true
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[*]
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charset = utf-8
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end_of_line = lf
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indent_size = 2
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indent_style = space
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insert_final_newline = true
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trim_trailing_whitespace = true
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[*.md]
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max_line_length = 0
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trim_trailing_whitespace = false

‎.env.sample

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PRIVATE_KEY=
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CMC_KEY=

‎.gitignore

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# Logs
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logs
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*.log
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npm-debug.log*
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yarn-debug.log*
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yarn-error.log*
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lerna-debug.log*
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# Diagnostic reports (https://nodejs.org/api/report.html)
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report.[0-9]*.[0-9]*.[0-9]*.[0-9]*.json
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# Runtime data
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pids
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*.pid
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*.seed
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*.pid.lock
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# Directory for instrumented libs generated by jscoverage/JSCover
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lib-cov
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# Coverage directory used by tools like istanbul
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coverage
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*.lcov
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# nyc test coverage
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.nyc_output
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# Grunt intermediate storage (https://gruntjs.com/creating-plugins#storing-task-files)
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.grunt
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# Bower dependency directory (https://bower.io/)
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bower_components
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# node-waf configuration
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.lock-wscript
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# Compiled binary addons (https://nodejs.org/api/addons.html)
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build/Release
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# Dependency directories
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node_modules/
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jspm_packages/
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# See https://help.github.com/articles/ignoring-files/ for more about ignoring files.
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# TypeScript v1 declaration files
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typings/
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# dependencies
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/node_modules
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/.pnp
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.pnp.js
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# TypeScript cache
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*.tsbuildinfo
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# testing
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/coverage
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# Optional npm cache directory
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.npm
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# next.js
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/.next/
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/out/
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# Optional eslint cache
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.eslintcache
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# production
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/build
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# Microbundle cache
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.rpt2_cache/
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.rts2_cache_cjs/
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.rts2_cache_es/
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.rts2_cache_umd/
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# Optional REPL history
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.node_repl_history
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# Output of 'npm pack'
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*.tgz
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# Yarn Integrity file
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.yarn-integrity
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# dotenv environment variables file
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# misc
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.DS_Store
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*.pem
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.env
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.env.test
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# parcel-bundler cache (https://parceljs.org/)
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.cache
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# Next.js build output
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.next
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# Nuxt.js build / generate output
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.nuxt
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dist
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# Gatsby files
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.cache/
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# Comment in the public line in if your project uses Gatsby and *not* Next.js
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# https://nextjs.org/blog/next-9-1#public-directory-support
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# public
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# vuepress build output
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.vuepress/dist
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# Serverless directories
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.serverless/
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# debug
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npm-debug.log*
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yarn-debug.log*
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yarn-error.log*
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# FuseBox cache
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.fusebox/
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# local env files
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.env.local
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.env.development.local
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.env.test.local
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.env.production.local
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# DynamoDB Local files
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.dynamodb/
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# vercel
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.vercel
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# TernJS port file
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.tern-port
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#Hardhat files
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cache
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artifacts

‎README.md

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# time
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TIME Token
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# TIME
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An ERC721 compliant Non-Fungible Token that allows you to own a piece of time.

‎contracts/token/ERC721/CollectibleTime.sol

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// SPDX-License-Identifier: MIT
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pragma solidity ^0.8.0;
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//implementation of ERC721 Non-Fungible Token Standard
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import "@openzeppelin/contracts/token/ERC721/ERC721.sol";
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//implementation of ERC721 where tokens can be irreversibly burned (destroyed).
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import "@openzeppelin/contracts/token/ERC721/extensions/ERC721Burnable.sol";
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//implementation of ERC721 where transers can be paused
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import "@openzeppelin/contracts/token/ERC721/extensions/ERC721Pausable.sol";
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//For verifying messages in lazyMint
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import "@openzeppelin/contracts/utils/cryptography/ECDSA.sol";
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//Abstract that allows tokens to be listed and exchanged considering royalty fees
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import "./abstractions/ERC721Exchange.sol";
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contract CollectableTime is ERC721, ERC721Burnable, ERC721Pausable, ERC721Exchange {
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//in only the contract owner can add a fee
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address private _admin;
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modifier onlyAdmin {
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require(
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_msgSender() == _admin,
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"Time: Restricted method access to only the admin"
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);
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_;
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}
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/**
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* @dev Constructor function
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*/
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constructor (string memory _name, string memory _symbol)
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ERC721(_name, _symbol)
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{
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_admin = _msgSender();
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}
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/**
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* @dev Sets a fee that will be collected during the exchange method
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*/
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function allocate(address recipient, uint256 fee)
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external virtual onlyAdmin
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{
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_allocateFee(recipient, fee);
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}
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/**
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* @dev Mints now and transfers to `recipient`
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*/
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function autoMint(address recipient)
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external virtual onlyAdmin
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{
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uint256 timestamp = block.timestamp;
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_safeMint(recipient, timestamp);
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}
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/**
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* @dev Removes a fee
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*/
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function deallocate(address recipient)
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external virtual onlyAdmin
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{
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_deallocateFee(recipient);
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}
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/**
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* @dev Allows anyone to self mint a token
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*/
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function lazyMint(uint256 tokenId, address recipient, bytes calldata proof)
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public virtual
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{
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//make sure the admin signed this off
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require(
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ECDSA.recover(
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ECDSA.toEthSignedMessageHash(
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keccak256(
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abi.encodePacked(tokenId, recipient)
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)
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),
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proof
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) == _admin,
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"Time: Invalid proof."
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);
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_safeMint(recipient, tokenId);
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}
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/**
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* @dev Mints `tokenId` and transfers to `recipient`
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*/
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function mint(uint256 tokenId, address recipient)
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external virtual onlyAdmin
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{
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_safeMint(recipient, tokenId);
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}
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/**
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* @dev Lists `tokenId` on the order book for `amount` in wei.
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*/
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function list(uint256 tokenId, uint256 amount) external virtual {
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_list(tokenId, amount);
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}
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/**
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* @dev Removes `tokenId` from the order book.
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*/
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function delist(uint256 tokenId) external virtual {
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_delist(tokenId);
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}
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/**
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* @dev Allows for a sender to exchange `tokenId` for the listed amount
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*/
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function exchange(uint256 tokenId) external virtual override payable {
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_exchange(tokenId, msg.value);
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}
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/**
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* @dev Pauses all token transfers.
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*
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* See {ERC721Pausable} and {Pausable-_pause}.
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*
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* Requirements:
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*
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* - the caller must have the `PAUSER_ROLE`.
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*/
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function pause() public virtual onlyAdmin {
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_pause();
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}
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/**
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* @dev Returns the total supply of time
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*/
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function totalSupply() external view returns(uint256) {
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return block.timestamp;
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}
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/**
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* @dev Unpauses all token transfers.
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*
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* See {ERC721Pausable} and {Pausable-_unpause}.
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*
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* Requirements:
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*
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* - the caller must have the `PAUSER_ROLE`.
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*/
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function unpause() public virtual onlyAdmin {
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_unpause();
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}
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/**
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* @dev Resolves duplicate _beforeTokenTransfer method definition
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* between ERC721 and ERC721Pausable
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*/
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function _beforeTokenTransfer(
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address from,
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address to,
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uint256 tokenId
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) internal virtual override(ERC721, ERC721Pausable) {
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super._beforeTokenTransfer(from, to, tokenId);
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}
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}

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