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"https://registry.npmjs.org/ethashjs/-/ethashjs-0.0.7.tgz", "sha": "30bfe4196726690a0c59d3b8272e70d4d0c34bae", "registry": "npmjs" }, "ethashjs-0.0.8.tgz": { "url": "https://registry.npmjs.org/ethashjs/-/ethashjs-0.0.8.tgz", "sha": "227442f1bdee409a548fb04136e24c874f3aa6f9", "registry": "npmjs" } }, "_attachments": {}, "_rev": "11-a98a426eee48e58b", "_id": "ethashjs", "readme": "# SYNOPSIS\n\n[![NPM Package](https://img.shields.io/npm/v/ethashjs.svg)](https://www.npmjs.org/package/ethashjs)\n[![Actions Status](https://github.com/ethereumjs/ethashjs/workflows/Build/badge.svg)](https://github.com/ethereumjs/ethashjs/actions)\n[![Coverage Status](https://img.shields.io/coveralls/ethereumjs/ethashjs.svg)](https://coveralls.io/r/ethereumjs/ethashjs)\n[![Gitter](https://img.shields.io/gitter/room/ethereum/ethereumjs-lib.svg)](https://gitter.im/ethereum/ethereumjs-lib)\n\nImplements [Ethash](https://github.com/ethereum/wiki/wiki/Ethash).\n\n# INSTALL\n\n`npm install ethashjs`\n\n# USAGE\n\n```javascript\nconst Ethash = require('ethashjs')\nconst Block = require('ethereumjs-block')\nconst levelup = require('levelup')\nconst memdown = require('memdown')\n\nvar cacheDB = levelup('', {\n db: memdown\n})\n\nvar ethash = new Ethash(cacheDB)\nvar validblockRlp =\n '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'\n\nvar validblock = new Block(Buffer.from(validblockRlp, 'hex'))\n\nethash.verifyPOW(validblock, function (result) {\n console.log(result)\n})\n```\n\n# BROWSER\n\nYep, you can [browserify](http://browserify.org/) it.\n\n# API\n\n- [`new Ethash([cacheDB])`](#newethashcachedb)\n- [`ethash.verifyPOW(block, cb)`](#ethashverifypowblock-cb)\n- [`ethash.mkcache(cacheSize, seed)`](#ethashmkcachecachesize-seed)\n- [`ethash.run(val, nonce, fullsize)`](#ethashrunval-nonce-fullsize)\n\n### `new Ethash([cacheDB])`\n\nCreates a new instance of `Ethash`.\n\n**Parameters**\n\n- `cacheDB` - an instance of a levelup db which is used to store the cache(s)\n\n### `ethash.verifyPOW(block, cb)`\n\nVerifies the POW on a block and its uncles\n\n**Parameters**\n\n- `block` - the [block](https://github.com/ethereum/ethereumjs-block) to verify\n- `cb` - the callback which is given a `Boolean` determining the validaty of the block\n\n### `ethash.mkcache(cacheSize, seed)`\n\nCreates a cache. NOTE: this is automatically done for in - [`ethash.verifyPOW(block, cb)`](#ethashverifypowblock-cb) so you do not need to use this function if you are just validating blocks\n\n**Parameters**\n\n- `cachSize` - the size of the cach\n- `seed` - the seed as a `Buffer`\n\n### `ethash.run(val, nonce, fullsize)`\n\nRuns ethash on a give val/nonce pair. NOTE: you need to run [`ethash.mkcache(cacheSize, seed)`](#ethashverifypowcachesize-seed) first before using this function.\n\n**Parameters**\n\n- `val` - value to run ethash on e.g. the header hash\n- `nonce` - the nonce used for this hash attempt\n- `fullsize` - the fullsize of the cache.\n\n**Returns**\n\nAn `Object` containing:\n\n- `hash` - the hash of the value\n- `mix` - the mis result\n\n# TESTS\n\n`npm test`\n\n# LICENSE\n\n[MPL-2.0](https://www.mozilla.org/MPL/2.0/)" }