In The Unicode Standard, Brahmi script implementation is discussed in  Chapter 14 South and Central Asia-III: Ancient Scripts.

The Brahmi script was encoded in The Unicode Standard version 6.0. The script is encoded in the following block:

BlocksCharacter RangeAdded in Unicode VersionUnicode Chart
Brahmi 11000..1107F 6.0  U11000

Subsequent to version 6.0, the following characters have been added to the Brahmi script:

CharactersUnicode VersionDocumentation
1107F 7.0  WG2 N4166,  L2/11-357

Documentation refers to  ISO Working Group and Unicode proposals

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

1992-10-30 Brahmi and Other Scripts of India — Rick McGowan ( Unicode Technical Report #3 R2)

1998-01-18 Proposal to encode Brahmi in Plane 1 of ISO/IEC 10646 — Michael Everson ( WG2 N1685.htm,  WG2 N1685/N1685.htm,  L2/98-032)

2000-02-15 Scripts from the Past in Future Versions of Unicode — Carl-Martin Bunz ( L2/00-128)

2000-04-26 Further comments on historic scripts — Carl-Martin Bunz ( L2/00-153)

2002-11-02 Note for the UTC on the encoding of Brahmi in Unicode — Stefan Baums, Andrew Glass ( L2/02-397)

2003-07-27 Proposal for the Encoding of Brahmi — Stefan Baums, Andrew Glass ( L2/03-249)

2007-08-14 Progressing the encoding of Brahmi in the SMP of the UCS — Michael Everson, Andrew Glass, Stefan Baums ( WG2 N3490,  L2/08-277)

2007-10-09 Proposal for the encoding of Brāhmī in Plane 1 of ISO/IEC 10646 — Stefan Baums, Andrew Glass ( WG2 N3491,  L2/07-342)

2007-10-31 Scripts on Roadmap covered by Brahmi encoding — Andrew Glass, Stefan Baums ( L2/07-406)

2008-05-05 Towards property classification for Brahmi-derived scripts — Ken Whistler ( L2/08-207)

2010-07-27 Proposal to change the glyph for Brahmi Number One Thousand (U+11065) — Andrew Glass, Stefan Baums ( L2/10-260)

2010-09-14 Using ZWJ in the encoded representation of Brahmi numbers — Shriramana Sharma ( L2/10-340)

2010-09-14 Concerning the Brahmi and Sharada characters for jihvamuliya and upadhmaniya (revised) — Shriramana Sharma ( L2/10-330)

2011-11-02 Proposal to encode 1107F Brahmi Number Joiner (revised) — Andrew Glass, Shriramana Sharma ( WG2 N4166,  L2/11-357)

2011-11-04 Proposed Additions to ISO/IEC 10646 — U.S. National Body ( WG2 N4181,  L2/11-330)

2012-01-12 Special rendering of some jihvamuliya/upadhmaniya characters — Shriramana Sharma ( L2/12-020)

2012-03-17 Request for editorial updates to various Indic scripts — Shriramana Sharma ( L2/12-106)

2012-05-02 Brahmi Letter LLA glyph in TUS – Comment on document L2/12-106 — Naga Ganesan ( L2/12-165)

2012-07-10 Proposal to add two characters for Brahmi — Shriramana Sharma ( L2/12-226)

2012-07-18 Update on Brahmi and other Indic unification issues — Shriramana Sharma ( L2/12-236)

2012-07-31 Indic Scripts in Unicode — Eric Muller ( L2/12-289)

2012-07-31 Proposal to change the glyph for Brahmi Letter Lla (U+11034) — Andrew Glass ( WG2 N4333,  L2/12-292)

2014-02-07 Special rendering of some jihvamuliya/upadhmaniya characters — Shriramana Sharma ( L2/14-066)

2016-11-05 Request to change the glyphs of Brahmi vowel signs Vocalic R and Vocalic RR — Srinidhi A, Sridatta A ( L2/16-343)

Recommendations to UTC #150 January 2017 on Script Proposals ( L2/17-037) (See point 3b.)

UTC #150 Minutes ( L2/17-016) (See D.9.2 for decision and action items)

2016-12-23 Request to change the glyph of 11008 BRAHMI LETTER II — Srinidhi A, Sridatta A ( L2/16-321)

Recommendations to UTC #150 January 2017 on Script Proposals ( L2/17-037) (See point 3a.)

UTC #150 Minutes ( L2/17-016) (See D.9.1 for decision and action items)

2017-04-17 Request for editorial updates to Indic scripts — Srinidhi A, Sridatta A ( L2/17-098)

Recommendations to UTC #152 July-August 2017 on Script Proposals ( L2/17-255) (See point 7.)