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without requiring any judicial

approval.

The

financial

industry seemed to provide

politicians with an extralegal

way to crack down on

dissent.

The WikiLeaks blockade

went to the core of some of

the

concerns

that

had

motivated

the

original

Cypherpunks.

Bitcoin,

in

turn, seemed to have the

potential to counteract the

problem. Each person on the

network controlled his or her

coins with his or her private

key. There was no central

organization that could freeze

a person’s Bitcoin address or

stop coins from being sent

from a particular address.

A few days after the

WikiLeaks blockade began,

PCWorld wrote a widely

circulated story that noted the

obvious utility of Bitcoin in

the situation: “Nobody can

stop the Bitcoin system or

censor it, short of turning off

the

entire

Internet.

If

WikiLeaks

had

requested

Bitcoins then they would

have received their donations

without a second thought.”

It wasn’t clear if Bitcoin

could actually be used in this

particular

instance,

but

whatever

the

practical

possibilities, the blockade

was helping elevate the

debate around Bitcoin beyond

the rather narrow issues of

privacy

and

government

money-printing that had been

dominant in the early days.

Here

was

a

broader

philosophical issue that could

attract a wider audience, and

the forums were full of new

members who had been

drawn in by the attention.

One new user, a young man

in England named Amir

Taaki,

proposed

making

Bitcoin

donations

to

WikiLeaks. Amir argued this

could raise Bitcoin’s profile

at the same time that it could

help WikiLeaks raise money.

This kicked off a vigorous

debate on the forum. A

number

of

programmers

worried that the Bitcoin

network was not ready for all

the traffic—and government

scrutiny—that might come if

it started to be used for

controversial donations.

“It

is

extraordinarily

unwise to make Bitcoin such

a highly visible target, at such

an early stage in this project.

There could be a lot of

‘collateral damage’ in the

Bitcoin community while you

make your principled stand,”

one programmer wrote.

Satoshi eventually ended

the debate. When someone on

the forum wrote, “Bring it

on,”

Satoshi

responded

forcefully:

No, don’t “bring it

on.”

The project needs

to grow gradually so

the software can be

strengthened along the

way.

I make this appeal

to WikiLeaks not to

try to use Bitcoin.

Bitcoin is a small beta

community in its

infancy. You would

not stand to get more

than pocket change,

and the heat you

would bring would

likely destroy us at

this stage.

This

was

enough

to

convince Amir.

“I’ve done a U-turn on

my earlier view and agree.

Let’s protect and care for

Bitcoin until she leaves her

nursery onto the economic

killing fields.”

This was one of an ever-

diminishing

number

of

communications from Satoshi

during the fall of 2010.

Messages from both Satoshi

and

Martti

had

been

increasingly rare. In Martti’s

case, after a year of working

on Bitcoin free, he needed a

regular source of income. In

September, two months after

the Slashdot story, he took a

full-time job with a firm that

analyzed social-media data.

On top of having a full

schedule, Martti also saw that

he was no longer needed.

Gavin and a few others were

taking over many of the day-

to-day tasks that Martti had

previously handled. And the

chat channels were crawling

with people ready to help out.

Satoshi’s gradual fading

was less explicit. He still

posted occasionally to the

forums when there were

specific questions, but he

never appeared on the chat

channel

and

increasingly

shifted to infrequent private

communications with Gavin

and

just

a

few

other

developers. In December,

Satoshi asked Gavin if he

would mind having his e-mail

address posted on the Bitcoin

website, as a point of contact.

After his own name went up,

Gavin noticed that Satoshi’s

e-mail came down.

When the last public

forum

post

came

from

Satoshi, on December 12,

2010, there was nothing

marking

it

as

such.

Announcing the latest version

of the software, version

0.3.19, the post was markedly

different in tone from those

early messages, selling the

world-beating potential of

Bitcoin. The main sentiment

now was a warning that

Bitcoin was still extremely

susceptible

to

denial-of-

service

attacks,

which

overwhelm a system with

message traffic.

“There are still more

ways to attack than I can

count,” Satoshi wrote in the

brief note.

This came just days after

Hal Finney checked back in

for the first time since early

2009. His disease, ALS, had

progressed quickly and he

was now largely confined to

the family living room, in a

special setup his family had

concocted so that he could

continue

working

on

a

computer.

Hal made an unassuming

return to the community with

some relatively dry comments

about patterns in the price of

Bitcoin and the possibility of

using Bitcoin’s blockchain as

a new kind of database. He

was as enthusiastic as ever

about the network.

“I’d like to hear some

specific criticisms of the

code. To me it looks like an

impressive job, although I’d

wish for more comments,” he

wrote on the forum. “This is

some powerful machinery.”

This provoked Satoshi’s

second-to-last post: “That

means a lot coming from you,

Hal. Thanks.”

This exchange set off a

discussion among people who

had never heard Hal’s name

before.

“Who is Hal on the

forum?” one user wrote.

“Satoshi seemed to know of

him.”

The question quickly gave

way to the bigger mystery:

Who is Satoshi?

“Is he a real person? ;-)” a

forum user asked.

“Hmm, there are almost

no

results

for

Satoshi

unrelated to Bitcoin,” another

user wrote after some quick

research.

This set off the first stages