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32 lines
727 B
32 lines
727 B
2 years ago
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# Check Document
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### Instructions
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Write a node script that exports the function `checkDocument()` that :
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- takes as parameter a transaction id and a string
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- connects to a local node (`http://localhost:8545`)
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- returns the date, as a unix timestamp, that the document was added to the blockchain if the transaction id and the string match and returns 0 otherwise
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```js
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function checkDocument(text, txID) {
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//...
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}
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module.exports = checkDocument;
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```
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### Usage
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```js
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checkDocument(
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"Hello world!",
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"0x49c8803ea126179502d59707dbcd9e9de15f5d441920936e9ec6fd78dd6468d8"
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);
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// Expected :
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//1611104541
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```
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### Notions
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- [ethers provider](https://docs.ethers.io/v5/api/providers/provider/#Provider--transaction-methods)
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