The website hosts separate pages for compositions: the static URLs for these pages start with http://www.bachdigital.de/receive/BachDigitalWork_work_ and end with an eight-digit number (the first four being leading zeros for works in the 1998 version of the BWV catalogue).
Each of these numbers thus identifies a work, e.g.:
No.
00000001 → http://www.bachdigital.de/receive/BachDigitalWork_work_00000001 = BWV 1
No.
00000632 → http://www.bachdigital.de/receive/BachDigitalWork_work_00000632 = BWV 552
No.
00001524 → http://www.bachdigital.de/receive/BachDigitalWork_work_00001524 = BWV Anh.
213
Apart from later additions and corrections, these numbers follow the collation of BWV numbers, but with alternative versions of the same composition inserted immediately after the BWV number of the composition to which they belong, e.g.:
BWV 80 = Bach Digital Work (BDW) No.
0099
BWV 80a = BDW 0100
BWV 80b = BDW 0101
BWV 81 = BDW 0102
An example of a later addition/correction:
BWV Anh.
71 → renumbered to BWV 1128 → new Bach Digital Work number beyond the one for BWV Anh.
213: BDW 1725
The website hosts separate pages for compositions: the static URLs for these pages start with http://www.bachdigital.de/receive/BachDigitalWork_work_ and end with an eight-digit number (the first four being leading zeros for works in the 1998 version of the BWV catalogue). Each of these numbers thus identifies a work, e.g.:
No. 00000001 → http://www.bachdigital.de/receive/BachDigitalWork_work_00000001 = BWV 1
No. 00000632 → http://www.bachdigital.de/receive/BachDigitalWork_work_00000632 = BWV 552
No. 00001524 → http://www.bachdigital.de/receive/BachDigitalWork_work_00001524 = BWV Anh. 213
Apart from later additions and corrections, these numbers follow the collation of BWV numbers, but with alternative versions of the same composition inserted immediately after the BWV number of the composition to which they belong, e.g.:
BWV 80 = Bach Digital Work (BDW) No. 0099
BWV 80a = BDW 0100
BWV 80b = BDW 0101
BWV 81 = BDW 0102
An example of a later addition/correction:
BWV Anh. 71 → renumbered to BWV 1128 → new Bach Digital Work number beyond the one for BWV Anh. 213: BDW 1725
Bach Digital