p/xmr proof
Monero stagenetbuy
block 2,217,880, 31573 conf- transaction
9d193075fe2f69254f61ea43a3fda08d14e257104aad15cefa3669507d2176c7- read from
- node.monerodevs.org:38089 at height 2,249,453
- tx_extra
01ea1ea45df2f6630144606db3ab1d1e8328155dcabd84d69fa15aa53400748397024e70786d720158f84d4a4bab9d00d881d90ad43ca5fc63de13c9734da14a589b4ac2cb4703ac6f58ab6d326004317dff61f0a30a0179ca90af129f5d78e782026c53c7d820a50000000000000000000209018913fb144e6b8124- minTokensOut
0- payoutAddress
55ChGVipdsJ19CsTJHqgj6jDW1fgu3ATADSFXeWxLBX8VqqRtS9971D9H8tvPHW5e8MNXcoHdM679fiv8tbj7KsuKe8Fr73
The highlighted bytes are the p/xmr nonce. They start with 70786d72, which is ASCII pxmr, followed by the operation code.
check it yourself
Ask any public stagenet node for the transaction. The extra array in the response holds the same bytes as decimals: 112, 120, 109, 114 spell pxmr.
curl -s -X POST http://node.monerodevs.org:38089/get_transactions -H 'content-type: application/json' -d '{"txs_hashes":["9d193075fe2f69254f61ea43a3fda08d14e257104aad15cefa3669507d2176c7"],"decode_as_json":true}'