In early December 2022 when I wrote skeptically about the economics of Bitcoin mining in Foolish Lenders the Bitcoin "price" was around $17K. It has now climbed 153% to around $43K and, below the fold, I am still posting skeptically about the economics of mining.
I'm David Rosenthal, and this is a place to discuss the work I'm doing in Digital Preservation.
Tuesday, February 13, 2024
Thursday, February 8, 2024
Tracing The Pig Butchers
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"Vicky" |
I showed my phone to my friend and explained that I was stringing Vicky along because I’d heard about a new kind of investment fraud that often started with a random text message. I had a hunch that this was why “Vicky” was texting me. The scam was called “pig butchering” because the scammers liked to build up the victim’s confidence with a pretend romantic relationship and made-up investment gains before stealing all their money in one fell swoop—like how hogs are fattened up before their slaughter.This is a romance- and cryptocurrency-enabled version of the "Wee Forest Folk" scam we described in our 2003 SOSP paper.
Below the fold, I look into the details of pig-butchering scams, and how the tracing techniques I discussed in Criming On The Blockchain are being applied to identify the cryptocurrency companies facilitating it.
Thursday, February 1, 2024
The Stanford Digital Library Project
The Stanford Digital Library Project stated its goal thus:
In particular Vicky explained citation indices, the concept behind Page Rank, to Larry Page and Sergey Brin. Andy Bechtolsheim was famously instrumental in persuading them to turn their demo of a Page Rank search engine into Google, the company. In his fascinating interview in the Computer History Museum's oral history collection, Andy explains why the idea of ranking pages by their inbound links was so important.
Below the fold I have taken the liberty of transcribing and cleaning up the relevant section of Andy's stream of conciousness, both because it is important history and because it exactly reflects the Andy I was privileged to know in the early days of Sun Microsystems.
The Stanford Integrated Digital Library Project will develop enabling technologies for an integrated “virtual” library to provide an array of new services and uniform access to networked information collections. The Integrated Digital Library will create a shared environment linking everything from personal information collections, to collections of conventional libraries, to large data collections shared by scientists.Stanford librarians Vicky Reich and Rebecca Wesley provided the "library" input for the research.
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Wayback Machine, 11/11/98 |
Below the fold I have taken the liberty of transcribing and cleaning up the relevant section of Andy's stream of conciousness, both because it is important history and because it exactly reflects the Andy I was privileged to know in the early days of Sun Microsystems.
Tuesday, January 30, 2024
Criming On The Blockchain
I apologize for the delay in posting but, as you will see, the post I was working on grew rather long.
It seems obvious that doing crimes and writing the receipts to an immutable public ledger is risky, but many criminals have been convinced that there is no risk because cryptocurrencies such as Bitcoin are anonymous. Although there are cryptocurrencies with anonymous transactions, such as Monero and zCash, they are much more difficult to use and much less liquid than pseudonymous cryptocurrencies like Bitcoin. As many criminals have discovered, without an unrealistically intense focus on operational security (opsec), the identity behind the pseudonym can be revealed. An entire industry has evolved to do these revelations, tracing the flow of coins through their blockchains.
Below the fold I discuss the techniques and results of blockchain tracing, based on four main sources:
It seems obvious that doing crimes and writing the receipts to an immutable public ledger is risky, but many criminals have been convinced that there is no risk because cryptocurrencies such as Bitcoin are anonymous. Although there are cryptocurrencies with anonymous transactions, such as Monero and zCash, they are much more difficult to use and much less liquid than pseudonymous cryptocurrencies like Bitcoin. As many criminals have discovered, without an unrealistically intense focus on operational security (opsec), the identity behind the pseudonym can be revealed. An entire industry has evolved to do these revelations, tracing the flow of coins through their blockchains.
Below the fold I discuss the techniques and results of blockchain tracing, based on four main sources:
- Andy Greenberg's new book entitled Tracers in the Dark: The Global Hunt for the Crime Lords of Cryptocurrency.
- Chainalysis' report 2024 Crypto Crime Trends: Illicit Activity Down as Scamming and Stolen Funds Fall, But Ransomware and Darknet Markets See Growth and his ‘Stablecoins’ Enabled $40 Billion in Crypto Crime Since 2022.
- The UN Office for Drugs and Crime (UNODC) report Casinos, Money Laundering, Underground Banking, and Transnational Organized Crime in East and Southeast Asia: A Hidden, Accelerating Threat.
- Recent posts on ChainArgos blog.
Thursday, January 18, 2024
A Lesson Learned
You know how backups work great until you really need them? Below the fold, a lesson learned from my recent example of this phenomenon.
Tuesday, January 9, 2024
Autonomous Vehicles: Trough of Disillusionment
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Jeremykemp CC BY-SA 3.0, Link |
Below the fold I try to catch up with the flood of reporting on the autonomous vehicle winter triggered by the bursting of the bubble.
Tuesday, January 2, 2024
Good News For Tether
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USDT "market cap" |
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BTC "price" |
So all is well with the world; Tether gets to keep the interest on another $20B, which at say 4% is an extra $800M/year on their bottom line, and the Bitcoin HODL-ers see their
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