Adam Back

Co-Founder and CEO, Blockstream · 1 appearance on the record.

computed by AI from the episodes · how this works → · full disclaimer →

scientistfounderexecutiveinvestor@adam3us ↗LinkedIn ↗cypherspace.org/adam ↗Wikipedia ↗

Back invented Hashcash in 1997, a proof-of-work algorithm cited in Satoshi Nakamoto's Bitcoin white paper that formed the basis for Bitcoin's mining mechanism. In 2014, he co-founded Blockstream, a Bitcoin infrastructure company where he leads the development of sidechains, layer-2 scaling, and mining technology.

11statements → 8claims → 4claims resolved → 50%fully supported → 3.27/5average certainty → 3/5average debate potential → 1said about them ↓

2 supported 2 partly supported 0 contradicted 4 not checkable as stated how the 8 claims stand · each chip opens the sources

3 predictions · 5 assertions · 2 insights · 1 disclosure · every statement was checked. The predictions and assertions are the 8 claims: statements the public record can support or contradict. 4 are resolved, and 4 name no date, number or outcome precise enough to check. Everything else (opinions, insights, what ifs, disclosures) can never be settled by the record, so it carries no assessment.

The record, in short

What the tape says about how Adam argues and how the claims held up. Everything they said, and everything said about them, is in the tabs below.

Their most notable supported claim

Prediction Held up

Back: Lightning Network could scale Bitcoin capacity up to 10,000x

“There's also right now quite active work on this sort of Bitcoin enhancement called lightning, which is a best described as a kind of right caching layer for Bitcoin, which might scale Bitcoin by a factor of a thousand or 10,000.”

Adam Back Jan 2, 2019 ▶ 14:48 a16z Podcast | Hard Forks, Hard Choices for Bitcoin

Expressed certainty vs assessment result

none yet certainty 1

100% certainty 2

75% certainty 3

50% certainty 4

none yet certainty 5

weighted support: a fully supported claim counts one, a partly supported claim counts half. Each filled bar is clickable and opens exactly those claims; "none yet" means nothing said at that certainty level has resolved yet

How they sound: speaking style how? →

258 words/min while actually speaking · 19 um and uh per 1k words

No argument clarity score for Adam Back: no usable question→answer exchanges on raw tape (a fair score needs 8+). We do not score a sample that small. Roundtable and news formats yield far fewer direct exchanges than interviews.

Measured by listening to the audio itself: 3,045 words across 1 episode of raw-level tape, transcribed verbatim with every um and uh kept, each one attributed only where the alignment onto our timed stream is unambiguous. These are measurements of speaking style. We do not rank them: across this corpus, fluency and argument quality are nearly uncorrelated (ρ≈0.2), and smooth talking does not signal clear thinking. How it's measured →

What they said11 What others said1 Episodes1

Everything Adam Back said on the a16z Podcast that made the record, most notable first. Filter by type, assessment or year in the ledger →

Assertion Not checkable as stated

Back: Everyone agrees Bitcoin needs a block size increase

“If we need to increase the block size, which I think everybody agrees with at this point in time.”

Adam Back Jan 2, 2019 ▶ 3:22 a16z Podcast | Hard Forks, Hard Choices for Bitcoin

Prediction Not checkable as stated

Back: Raising Bitcoin block size to 1GB would cause network failure

“If we jumped up the block size to a gigabyte now, security would fail, the network would probably fail.”

Adam Back Jan 2, 2019 ▶ 5:36 a16z Podcast | Hard Forks, Hard Choices for Bitcoin

Assertion Not checkable as stated

Back: Three or four colluding mining companies could influence Bitcoin policy

“You know, it's probably the case that you could, you know, If you could get collaboration from three, four companies in various parts of the world, you could start to apply some policy influence to Bitcoin.”

Adam Back Jan 2, 2019 ▶ 21:13 a16z Podcast | Hard Forks, Hard Choices for Bitcoin

Disclosure

Back proposes scaling Bitcoin block size limit to 8MB over four years

“So the proposal I made was to increase to two megabytes failure immediately, as soon as we can roll out change, which to be clear, any of them would take about six months to roll out. Increase to four megabytes after two years, and eight megabytes after four y…”

Adam Back Jan 2, 2019 ▶ 10:06 a16z Podcast | Hard Forks, Hard Choices for Bitcoin

Assertion Not checkable as stated

Back: 99% of Bitcoin transactions occur off the main blockchain

“Estimates are something like currently 99% of them are happening off the blockchain.”

Adam Back Jan 2, 2019 ▶ 13:17 a16z Podcast | Hard Forks, Hard Choices for Bitcoin

Prediction Held up

Back: Lightning Network could scale Bitcoin capacity up to 10,000x

Adam Back Jan 2, 2019 ▶ 14:48 a16z Podcast | Hard Forks, Hard Choices for Bitcoin

Insight

Back: Massively scaling Bitcoin sacrifices decentralization, turning it into PayPal

“You can scale massively and lose the decentralization, and at that point, Bitcoin loses most of its distinguishing features, and you're left with a kind of PayPal situation With all the things people gripe about with PayPal.”

Adam Back Jan 2, 2019 ▶ 22:01 a16z Podcast | Hard Forks, Hard Choices for Bitcoin

Insight

Back: Bitcoin hard forks require full ecosystem compromise to succeed

“Because of the nature of hard forks where everybody has to upgrade at once, it's essentially, you know, it's essential that all of the participants, including the users, the miners, the ecosystem players providing different kinds of services to users, that the…”

Adam Back Jan 2, 2019 ▶ 18:06 a16z Podcast | Hard Forks, Hard Choices for Bitcoin

Assertion Partly supported

Back: Bitcoin soft forks require 95% miner consensus to activate

“These things don't activate until 95% of the miners are upgraded, so, and there's a long window of warning that the upgrade is happening, six months or so.”

Adam Back Jan 2, 2019 ▶ 3:09 a16z Podcast | Hard Forks, Hard Choices for Bitcoin

Assertion Partly supported

Back: Bitcoin blocks are half full, half under one dollar

“The blocks are maybe a third to a half full on average, and if you look at, if you analyze the transactions in the block, about half of them are under a dollar.”

Adam Back Jan 2, 2019 ▶ 4:04 a16z Podcast | Hard Forks, Hard Choices for Bitcoin

Prediction Held up

Back: Lightning Network implementations will yield results within six months

“There's a GitHub and a development mailing list, and there are now three, I think maybe four companies who've come forward with implementations of the early stages of it, and we're hopeful that we'll see results from that within the six-month time frame.”

Adam Back Jan 2, 2019 ▶ 15:13 a16z Podcast | Hard Forks, Hard Choices for Bitcoin

The other half of the tape: Adam Back's own voice is left out of every number here. 1 statement on the record names them. every mention, with the transcript →

Statements about Adam Back, by other people (1)

Opinion

Morkos: Back's proposal provides crucial temporary scaling relief

“I think that's why you know, a proposal like Adams, which sort of gives you that temporary breathing room, and in the long term, more time to implement the right solution, may make a lot of sense.”

Alex Morkos Jan 2, 2019 ▶ 12:34 a16z Podcast | Hard Forks, Hard Choices for Bitcoin

Appearances (1)

Episode	Date	Speaking time
a16z Podcast \| Hard Forks, Hard Choices for Bitcoin	Jan 2, 2019	15m

Adam Back

The record, in short

Their most notable supported claim

Expressed certainty vs assessment result

How they sound: speaking style how? →

Statements about Adam Back, by other people (1)

Appearances (1)

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