<p>On mainnet there are a number of P2TR transactions in block 709635. A few transaction IDs are included in the index of my bitcoin-dev <a href="https://lists.linuxfoundation.org/pipermail/bitcoin-dev/2021-November/019598.html" rel="nofollow noreferrer">mailing list post</a>.</p>

CC BY-SA 4.0
2021-11-29T22:53:37.923Z
This answer could be improved by including a txid, given that this was the main request of the asker. Please don't post link-only answers.
Murch
CC BY-SA 4.0
2021-11-29T17:30:09.727Z
2021-11-29T17:30:09.727Z
Michael Folkson
<p>Taproot activated in block 709 632, but the first P2TR transactions were in block 709 635. A few P2TR transactions that may be useful for test vectors would be:</p>
<ul>
<li><a href="https://blockstream.info/tx/33e794d097969002ee05d336686fc03c9e15a597c1b9827669460fac98799036" rel="noreferrer">33e7…9036</a>, the first P2TR transaction</li>
<li><a href="https://blockstream.info/tx/37777defed8717c581b4c0509329550e344bdc14ac38f71fc050096887e535c8" rel="noreferrer">3777…35c8</a>, the first transaction with both a P2TR scriptpath and a P2TR keypath input</li>
<li><a href="https://blockstream.info/tx/83c8e0289fecf93b5a284705396f5a652d9886cbd26236b0d647655ad8a37d82" rel="noreferrer">83c8…7d82</a> with multiple P2TR keypath inputs</li>
<li><a href="https://blockstream.info/tx/905ecdf95a84804b192f4dc221cfed4d77959b81ed66013a7e41a6e61e7ed530" rel="noreferrer">905e…d530</a>, the first scriptpath 2-of-2 multisig spend</li>
<li><a href="https://blockstream.info/tx/2eb8dbaa346d4be4e82fe444c2f0be00654d8cfd8c4a9a61b11aeaab8c00b272" rel="noreferrer">2eb8…b272</a>, the first use of the new Tapscript opcode <code>OP_CHECKSIGADD</code></li>
</ul>
<p>You could find all P2TR transactions via a blockexplorer for example on blockchair.com by filtering the <a href="https://blockchair.com/bitcoin/outputs?s=value(desc)&amp;q=type(witness_v1_taproot),is_spent(true)#f=transaction_hash,index,time,value,value_usd,recipient,spending_transaction_hash,spending_time,spending_value_usd,cdd,type,is_spent" rel="noreferrer">transaction outputs for <code>type(witness_v1_taproot)</code> and <code>is_spent(true)</code></a>.</p>

CC BY-SA 4.0
2023-05-09T10:01:24.930Z
For the final transaction you list, I see where the internal public key should be is: 0000000000000000000000000000000000000000000000000000000000000001. What does that mean in this context? Also I see the Schnorr signatures here are 65 bytes, but I thought Schnorr signatures were typically 64 bytes. In BIP 342, under "Signature Validation" it mentions this, but I'm not clear. Thanks
Peter
CC BY-SA 4.0
2021-11-29T22:50:15.947Z
2021-12-21T16:59:38.967Z
2021-12-21T16:59:38.967Z
Murch
<p>Can I ask for a P2TR transaction id example past block 709632?</p>
<p>I was trying to debug one of my scripts and something is wrong when searching for <code>witness_v1_keyhash</code>, and couldn't manually find one in the blockchain explorers.</p>

<taproot><p2tr>
How can I find samples for P2TR transactions on mainnet?
Tony Sanak
# How can I find samples for P2TR transactions on mainnet?

(Asked by: username_0 on 2021-11-29)

Can I ask for a P2TR transaction id example past block 709632?

I was trying to debug one of my scripts and something is wrong when searching for `witness_v1_keyhash`, and couldn't manually find one in the blockchain explorers.

**Tags:** taproot, p2tr


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## 2 answers

### Answer by username_2 on 2021-11-29. Score: 15 | Accepted answer

Taproot activated in block 709 632, but the first P2TR transactions were in block 709 635. A few P2TR transactions that may be useful for test vectors would be:

* [33e7…9036](https://blockstream.info/tx/33e794d097969002ee05d336686fc03c9e15a597c1b9827669460fac98799036), the first P2TR transaction
* [3777…35c8](https://blockstream.info/tx/37777defed8717c581b4c0509329550e344bdc14ac38f71fc050096887e535c8), the first transaction with both a P2TR scriptpath and a P2TR keypath input
* [83c8…7d82](https://blockstream.info/tx/83c8e0289fecf93b5a284705396f5a652d9886cbd26236b0d647655ad8a37d82) with multiple P2TR keypath inputs
* [905e…d530](https://blockstream.info/tx/905ecdf95a84804b192f4dc221cfed4d77959b81ed66013a7e41a6e61e7ed530), the first scriptpath 2-of-2 multisig spend
* [2eb8…b272](https://blockstream.info/tx/2eb8dbaa346d4be4e82fe444c2f0be00654d8cfd8c4a9a61b11aeaab8c00b272), the first use of the new Tapscript opcode `OP_CHECKSIGADD`

You could find all P2TR transactions via a blockexplorer for example on blockchair.com by filtering the [transaction outputs for `type(witness_v1_taproot)` and `is_spent(true)`](https://blockchair.com/bitcoin/outputs?s=value(desc)&q=type(witness_v1_taproot),is_spent(true)#f=transaction_hash,index,time,value,value_usd,recipient,spending_transaction_hash,spending_time,spending_value_usd,cdd,type,is_spent).

> **Comments:**
> **username_3**: For the final transaction you list, I see where the internal public key should be is: 0000000000000000000000000000000000000000000000000000000000000001. What does that mean in this context? Also I see the Schnorr signatures here are 65 bytes, but I thought Schnorr signatures were typically 64 bytes. In BIP 342, under "Signature Validation" it mentions this, but I'm not clear. Thanks  

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### Answer by username_1 on 2021-11-29. Score: 1

On mainnet there are a number of P2TR transactions in block 709635. A few transaction IDs are included in the index of my bitcoin-dev [mailing list post](https://lists.linuxfoundation.org/pipermail/bitcoin-dev/2021-November/019598.html).

> **Comments:**
> **username_2**: This answer could be improved by including a txid, given that this was the main request of the asker. Please don't post link-only answers.  

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