Bit Message Bit Message
Elementary
English

The Bit Message is a message that is hidden within the lines of an octet stream and it is represented as a hexadecimal string which has maximum length of 149 octets. The first 9 octets of the message contain the header for the message and the rest comprise the content . The header contains 1 type octet, 7 timestamp octets, and 1 message length octet. The content contains a maximum of 140 octets and could be packed with either 7 bit, 8 bit or 16 bit. 7 bit packed messages have a length of 160 characters, 8 bit packed messages have a length of 140 characters, and 16 bit packed messages will only have a length of 70 characters.

Here are some details on the structure of a bit message:


BIT MESSAGE FORMAT












Bit 7 6 5 4 3 2 1 0

Octet-nth









HEADER







TYPE









YEAR









MONTH









DAY









HOUR









MINUTE









SECOND









TIMEZONE









LENGTH

CONTENT







Octet-1

...







...









Octet-140























7-BIT PACKED MESSAGE












Bit 7 6 5 4 3 2 1 0

Octet-nth









1 0 b6 b5 b4 b3 b2 b1 b0


































8-BIT PACKED MESSAGE












Bit 7 6 5 4 3 2 1 0

Octet-nth









1 b7 b6 b5 b4 b3 b2 b1 b0


































16-BIT PACKED MESSAGE












Bit 7 6 5 4 3 2 1 0

Octet-nth









1 b7 b6 b5 b4 b3 b2 b1 b0
...

































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