Swift, the payments network that keeps global banking running, is dipping its toes into blockchain. The company is testing whether its core messaging system, the mechanism that allows more than 11,000 banks to securely talk to each other, could one day run on-chain. The experiment, reported by Grégory Raymond of The Big Whale on X, brings heavyweight partners to the table. BNP Paribas, BNY Mellon and several global banks are already involved.