This is copied from https://community.nanoporetech.com/technical_documents/chemistry-technical-document/v/chtd_500_v1_reval_07jul2016/adapter-sequences
Ligation Adapter (LA)
Top strand:
5'-TTTTTTTTCCTGTACTTCGTTCAGTTACGTATTGCT-3’
Bottom strand:
5’-GCAATACGTAACTGAACGAAGTACAGG-3’
Native Adapter (NA)
Top strand:
5'-TTTTTTTTCCTGTACTTCGTTCAGT ACGTATTGCT-3'
Bottom strand:
5'-ACGTAACTGAACGAAGTACAGG-3'
'ATTGCT' binds the native barcode adapter. There is a missing T for the top strand of the NA adapter. I have added a space where it should be.