binary denotation

Several options here: s:z pairs mark the number of 1s and 0s respectively, if there is a 10 or 1010 it is written as is.

Another option is always to write the number of 1s and zeroes with a ^ between them and a space between the pairs so the first digits of pi are:
11.0^1 1^2 1^4 6^1 2^1 1^1 1^1 1^3 1^3 1^4 1^1 1...=
11.0100 10000 11111 10110 10101 00010 00100 00101...

s:z pairs example:

11.0 1:2 1:4 6:1 2:1 1010 1:3 1:3 1:4 101 =
11.0100 10000 11111 10110 10101 00010 00100 00101...
=
11.0
100
10000
11111 10
110
1010
1 000
10 00
100 00
10
1...