21 lines
1.2 KiB
TypeScript
21 lines
1.2 KiB
TypeScript
import * as assert from 'assert';
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import { describe, it } from 'mocha';
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import * as bitcoin from '../..';
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describe('bitcoinjs-lib (blocks)', () => {
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it('can extract a height from a CoinBase transaction', () => {
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// from 00000000000000000097669cdca131f24d40c4cc7d80eaa65967a2d09acf6ce6
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const txHex =
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'010000000001010000000000000000000000000000000000000000000000000000000000000000ffffffff50037f9a07174d696e656420627920416e74506f6f6c685b205a2b1f7bfabe6d6d36afe1910eca9405b66f97750940a656e38e2c0312958190ff8e98fd16761d220400000000000000aa340000d49f0000ffffffff02b07fc366000000001976a9148349212dc27ce3ab4c5b29b85c4dec643d764b1788ac0000000000000000266a24aa21a9ed72d9432948505e3d3062f1307a3f027a5dea846ff85e47159680919c12bf1e400120000000000000000000000000000000000000000000000000000000000000000000000000';
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const tx = bitcoin.Transaction.fromHex(txHex);
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assert.strictEqual(tx.ins.length, 1);
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const script = tx.ins[0].script;
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// bitcoin.script.decompile(script) // returns [] :(
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assert.strictEqual(script[0], 0x03);
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const heightBuffer = script.slice(1, 4);
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const height = bitcoin.script.number.decode(heightBuffer);
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assert.strictEqual(height, 498303);
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});
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});
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