The Network Value to Transactions (NVT) ratio measures the dollar value of cryptoasset transaction activity relative to network value. This is a simple way to compare how the market prices one unit of on-chain transactions across different networks.
Generally speaking, a “low” market to transaction value denotes an asset which is more cheaply valued per unit of on-chain transaction volume.
Network value consists of the total market value of all tokens in circulation. The transaction element is an estimate of the value of on-chain transaction activity drawn from block explorers and blockchains.
The code is build with Typescript
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It fetches the queries from sqlite3 database
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It uses chrome headless with puppeteer to grab the canvas rendered screenshot at the last interval
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enlarges it with sharp then
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extracts the text from tesseract image recognition models
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Saves it into
historytable -
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sends the results by email using mailgun
You will need the following env vars or using a .env file:
PORT=8888
MAILGUN_API_KEY=239e8293e72398whateverwhatever
MAILGUN_DOMAIN=sandbox23892y3e82whatever.mailgun.org
MAILGUN_RECIPIENTS=your_email@gmail.com
- Edit the
seed.tsto your liking
Then after npm install install run once: npm run seed
Locally:
npm install && npm run build && npm run fastLocal
To get the code coverage:
npm run coverage
To run the tests in watch mode:
npm run watch
.vscode launch options are provided for debugging locally
- Build the image:
npm run docker-build - Run the image:
npm run docker-run
Alternatively: docker-compose up
Ideally run on a daily basis with cron, ex:
2am every day:
0 2 * * * /usr/local/node /your/code/path/build/server.js
Ex on my mac local:
* 2 * * * /usr/local/bin/node /Sites/nvt/build/server.js >> /Sites/nvt/cron.log 2>&1