dev7ba

Tx cycling attack contrib script

I would like to expand the assignment expressed in this document just to be sure we are on the same track:

https://docs.google.com/document/d/1qqz7vs49jbqzt3DDqrvmuSxMU9n4trNYaA4QPsrDcRk/edit

What is asked is a Phyton script that analyzes the txs from a bitcoin node with "unlimited" mempool size, calculating the feerate of all "chains of transactions" as in CPFP.

(I assume a "chain of transactions" as is expressed in the document, is the list of unconfirmed transactions that form the full ancestry of one transaction, forming a "transaction package".)

dev7ba

{
  "lastModTime": 1636642000555,
  "weightInLast10minutes": 4209540,
  "fblTxSatVByte": 8,
  "blockSelected": 3,
  "satVByteSelected": 2,
  "txIndexSelected": 1359,
  "txIdSelected": "1fddd883ddfadba0bf1383db2f791638b788c0c1694e5391fe8d7ad85c1d8866",
  "txDependenciesInfo": {
    "nodes": [

dev7ba

{
  "lastModTime": 1636385327364,
  "weightInLast10minutes": 3299338,
  "fblTxSatVByte": 9,
  "blockSelected": 3,
  "satVByteSelected": 5,
  "txIndexSelected": 1674,
  "txIdSelected": "68382e1b3f5aace234ddec58709b48e730247d0e30af76a8b9bba832ef4a54b5",
  "txDependenciesInfo": {
    "nodes": [

dev7ba

Keybase proof

I hereby claim:

• I am dev7ba on github.
• I am dev7ba (https://keybase.io/dev7ba) on keybase.
• I have a public key ASDhbL9sUcHXorwQTk8tTtCPdC5AZvz6mFxAlxtVie6Vdwo

To claim this, I am signing this object: