Diving deeper into DIY chain analysis and tools like OXT.
I mentioned some Tx interpretation/OXT examples during the chat yesterday. For those looking for some basic examples to play around with, these are a good start.
Example 1: Simple Spends
Interpretation: Output 0 Likely Payment, Output 1 Likely Change
Reasoning: VOUT0 round payment amount, VOUT0 to wrapped segwit address, VIN0 and VOUT1: native segwit
Example 2: Peel Chain
TxID (7912d…) in example above is highlighted in orange.
Peel chain is expanded via OXT Tx Graph. “Heavy lineweight” outputs make change output interpretation “obvious”
Click Tx details button in left toolbar (eye symbol), select each tx, VOUT0 is consistently the likely payment output interpretation
Conclusion: Wallet software does not randomize payment output index
Example 3: Address Reuse
Address Reuse (Log in to OXT to access the Tx tab from the address page)
Notes: Address received 2 UTXOs from, each from a unique transaction
Implications of this Address Reuse: ???
Example 4: Merged Inputs
Notes: Check tx for coinjoin properties (entropy)? If none, assume common ownership.
Which output is likely payment? Why?
Example 5: Batch Spends
Note: VOUT4 = change output, this output is reused in a new batch spendPOWERED BY BITLAUNCH
Ask a Chain Spy Series
MAR 27 @ 1600 UTC
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