Correspondent banking in BS
35 banks domiciled in BS publish standing settlement instructions in the current dataset, across 12 currencies. Where a bank has no direct clearing access, its instruction names the correspondent that settles on its behalf.
Tracing a chain for a bank in BS
Search the bank's BIC, choose the currency, and the chain resolves hop by hop to the institution that clears it — with the nostro account number on each relationship and the SWIFT field each BIC belongs in.