In The Unicode Standard, Cham script implementation is discussed in  Chapter 16 Southeast Asia.

The Cham script was encoded in The Unicode Standard version 5.1. The script is encoded in the following block:

BlocksCharacter RangeAdded in Unicode VersionUnicode Chart
Cham AA00..AA5F 5.1  UAA00

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

1997-04-06 Cham encoding discussion — Michael Everson ( WG2 N1578, L2/97-143 (not online))

1997-05-01 Proposal for encoding the Cham script in ISO/IEC 10646 — Michael Everson ( WG2 N1559, L2/97-124 (not online))

1999-02-01 Response to Ngo Trung Viet on feedback from Cham experts — Michael Everson ( WG2 N1960, L2/99-081 (not online))

2006-08-06 Proposal for encoding the Cham script in the BMP of the UCS — Michael Everson ( WG2 N3120,  L2/06-257)

2008-03-02 Criteria for the encoding of script-specific dandas — Unicode and US National Body ( WG2 N3457,  L2/08-118)

2014-02-05 A bag of suggested improvements to Unicode’s provisional Indic properties — Roozbeh Pournader, Behdad Esfahbod ( L2/14-065)

2014-05-08 Improvements requested for Unicode Indic properties (two text file appendices are included) — Roozbeh Pournader ( L2/14-126)

2016-04-25 Proposal to encode seven Cham characters in the BMP of the UCS — Michael Everson, Andrew Cunningham (WG2 N4711,  L2/16-082)

Recommendations to UTC #147 May 2016 on Script Proposals — Deborah Anderson, Ken Whistler, Roozbeh Pournader, Andrew Glass, Laurentiu Iancu ( L2/16-156) (See section 11 for recommendations)

UTC #147 Minutes ( L2/16-121) (See C.9 for decision and action items)