Oh, you want the format for encoding a blob in SQL Injection attack format.
That is specified as X'\<hexbytes\>...'
INSERT INTO t (integer, blob) values (57, X'4F8E72487B');
sqlite3_bind* is used to allow a program to talk to SQLite3. The above might be:
int i = 57;
unsigned char* b = {0x4F, 0x8E, 0x72, 0x48, 0x7B};
sqlite_stmt* stmt;
sqlite3\_prepare\_v2(db, "insert into t (integer, blob) values (?,?)",-1,&stmt, 0);
sqlite3\_bind\_int(stmt, 1, i);
sqlite3\_bind\_blob(stmt, 2, b, 5, SQLITE_TRANSIENT);
sqlite3\_exec(stmt);
sqlite3\_finalize(stmt);
where the ? are "positional parameters" and you are "binding" the integer i to the first parameter and the blob b (of 5 bytes in length) to the second parameter.