1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
|
% using the PGF/TikZ package with pdflatex
\documentclass{standalone}
\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc}
%~ \usepackage[english]{babel}
\usepackage[none]{hyphenat}% prevent hyphenation
\usepackage{lmodern}
\renewcommand*\familydefault{\sfdefault}
\usepackage{tikz}
\usetikzlibrary{shapes,arrows}
\tikzset{>=latex}
%\pgfdeclarelayer{bg} % declare background layer
%\pgfsetlayers{bg,main} % set order of layers
\newcommand{\h}{\hspace{1em}}
\begin{document}
% \sffamily{}
\tikzstyle{block_center} =
[rectangle, draw=black, thick, fill=white,
text width=10.5em, text centered,
minimum height=1em]
\tikzstyle{block_rounded} = [rectangle,
draw=black, thick, fill=white,
text width=8em, text centered,
minimum height=5em,
rounded corners]
\begin{tikzpicture}[auto]
% outlining the flowchart on a grid
\matrix[column sep=3ex,row sep=2.5ex]{
\h &
\node [block_center] (R1)
{Alice, Bob and Carol
wish to spend from a
2-of-3 Multisig.};
& \h \\
\h &
\node [block_center] (R2)
{Alice uses a full node
to create a PSBT with
all input UTXOs filled in.};
& \h \\
\h &
\node [block_center] (R3)
{PSBT distributed.};
& \h \\
\node [block_center] (R4C1)
{Alice signs the
PSBT with her wallet.};
&
\node [block_center] (R4C2)
{Bob signs the PSBT
with his SPV wallet.};
&
\node [block_center] (R4C3)
{Carol signs the PSBT
with a completely
offline signing machine.};
\\
%~ \h & \node (blind) & \h \\
\h &
\node [block_center] (R5)
{PSBTs are returned
to Alice.};
& \h \\
\h &
\node [block_center] (R6)
{Alices combines the
PSBTs. All inputs now
have 3 signatures.};
& \h \\
\h &
\node [block_center] (R7)
{Alice finalizes the PSBT
by creating each input's
final scriptSig. One signature
for each input is dropped.};
& \h \\
\h &
\node [block_rounded] (stop)
{Alice extracts the network
serialized transaction and
broadcasts it to the network.};
& \h \\
};% end matrix
% connecting nodes with paths
% \begin{pgfonlayer}{bg}
\draw[line width = 1pt, ->]
(R1) edge (R2)
(R2) edge (R3)
(R3) -| (R4C1)
(R3) edge (R4C2)
(R5) edge (R6)
(R6) edge (R7)
(R7) edge (stop);
% circumvent missing arrow
\draw[line width = 1pt, ->]
(R4C1) |-+(0,-2.2em)-| (R5)
(R4C2) edge (R5)
(R4C3) |-+(0,-2.2em)-| (R5)
(R3) -| (R4C3);
% \end{pgfonlayer}
\end{tikzpicture}
\end{document}
|
