Put your trades on a blockchain and reconciliation breaks disappear.
Sure it will.
A shared ledger can tell you both firms recorded the same message. It cannot make them record the same trade. One books by trade date, the other by settlement date. One uses an ISIN, the other a Bloomberg ID. One sees the original terms, the other the last amendment. One applied a manual adjustment that never reached the counterparty.
The ledger agrees on the record. The books still disagree on the trade.
And now the break is immutable. Congratulations.
Reconciliation is not about whether two systems see the same data. It is about whether each side’s internal view matches what they expect. A blockchain does not decide which reference data is correct or conjure missing adjustments out of thin air. Someone still has to own the data.
Here is what actually fixes breaks:
- Agree on identifiers, trade terms, and which source wins when records conflict.
- Define when an event becomes effective and when each system processes it.
- Record manual adjustments with a reason, owner, and link to the original trade.
- Map how each party’s bookings relate to the shared transaction record.
Skip that and the ledger just preserves the argument in amber.
The familiar sales pitch says smart contracts eliminate manual fixes and the audit trail settles any dispute. That is true only if the dispute is about whether the record was changed, not whether the record was right in the first place. An audit trail of a bad input is still an audit trail of a bad input.
If two firms cannot agree on what they traded, a blockchain will not make them agree. It will only make the disagreement harder to ignore.
The fastest way to modernize a reconciliation break is to stop creating it.
If the break starts upstream, fix upstream. Fancy plumbing won’t clean the water.