Original Documents
The first digital remediation of the Draft Treaty was baed on the text extracted from CONV 850/03, available in the format pdf (portable document format) from EU's web sites. The extracted text is converted into a format better suited for textual exploration (the format html combined with XML).
The access point below opens the text extracted from CONV 850/03.
An updated version of this text was brought to my attention by Jens-Peter Bonde, Member of the EU Parliament, in May 2004, with the following information:
"This document is based on the official document (2) produced by the Convention, which has undergone two rounds of changes: firstly by the Council’s legal service (3) and then by the foreign ministers(4) of the EU member states." (Bonde, May 2004)
4 See note 1"
 
This version is further updated with reference to the document CIG 86/04, 25 June 2004, 2003/2004 'Provisional consolidated version of the draft Treaty establishing a Constitution for Europe' (325 pages in the format pdf available from EU's sites, see above).
CIG 86/04 includes a 'Note to readers' - see  CIG 86/04 Note to readers.
The note refers to an Addendum 1 containing the Protocols and an Addendum 2 containing Declarations. The Protocols and Declarations in this digital version are per 13. juli 2004 based on the texts I received from Jens-Peter Bonde.