In The Unicode Standard, Bassa Vah script implementation is discussed in  Chapter 19 Africa.

The Bassa Vah script was encoded in The Unicode Standard version 7.0. The script is now encoded in the following block:

BlocksCharacter RangeAdded in Unicode VersionUnicode chart
Bassa Vah 16AD0..16AFF 7.0  U16AD0.pdf

A number of proposals for its inclusion have been submitted to the Unicode Technical Committee and WG2:

2009-03-20 Encoding of the Bassa Vah script in the UCS — Charles Riley ( L2/09-327)

2010-01-26 Preliminary proposal for encoding the Bassa Vah script in the SMP of the UCS — Michael Everson and Charles Riley ( WG2 N3760,  L2/10-030)

2010-05-08 Proposal for encoding the Bassa Vah script in the SMP of the UCS — Michal Everson, Charles Riley ( WG2 N3839,  L2/10-170)

2010-07-31 Revised proposal for encoding the Bassa Vah script in the SMP of the UCS — Michael Everson, Charles Riley ( WG2 N3847,  L2/10-217)

2010-10-06 Final proposal for encoding the Bassa Vah script in the SMP of the UCS — Michael Everson and Charles Riley ( WG2 N3941,  L2/10-382)

2011-02-14 Comments on Bassa Vah Comma — Charles Riley ( WG2 N3991,  L2/11-041)