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Of Tax Evasion and Crypto-Skullduggery!

One of the photos of Lisa’s arm taken after Sean injured her in April 2019. How did he manage to justify this injury to the police (whose own report stated that he was uninjured) and his own entourage, even the women? How did he make it Lisa’s fault? He is a really skilled liar, that’s how, and crypto is a liar’s biggest helper.

Sean Gilligan is a “crypto bro.” A software engineer, he has been evangelizing crypto-currencies and the blockchains they inhabit since 2013, and investing in crypto as long.

He has also been sanctioned twice by his divorce court for manipulating and lying about his and Lisa’s (his ex-wife’s) assets, principally crypto, first in October 2021 for $3,500, and then in October 2022 for $30,000. The latter amount reflected the court’s increasing frustration with the costs for Lisa of Sean’s constantly changing stories.

How crypto works, and why it has not worked in this divorce, explains those sanctions. That is the principal subject of this post. I’ve written about how the divorce started, Sean’s and Lisa’s ugly separation, before, and so won’t bore you with it again.

Crypto has enabled Sean to protract and muddy the simple questions addressed in separating community assets, those built up during the marriage, turning them into a major source of conflict for years: how much is there, and where is it?

And divorce law is simple: the couple splits community assets 50/50, with community assets being all those acquired during the marriage (except by inheritance). All of Sean’s cryptocurrency was acquired since 2009, when it was invented, and the couple married in 2000.

Crypto bro Sam Bankman-Fried, co-founder of the bankrupt crypto company FTX, has been accused of fraud and likened to Bernie Madoff. Here he is leaving court in New York City on January 3, 2023. Photo: Stephanie Keith/Bloomberg via Getty Images. The Intercept’s article included this interesting paragraph: “Among FTX’s listed creditors were a handful of nations . . . with lax financial regulations: the British Virgin Islands, Bermuda, the Cayman Islands, Isle of Man, Liechtenstein, Luxembourg, the United Arab Emirates, Seychelles, and Switzerland all appear in the filing.” Even the biggest crypto players sneak around in tax havens, which have instantly become crypto havens. Lisa has already tried to deal with Tether and BitFinex, crypto companies hiding in the British Virgin Islands (see below).

Mature adults who are not trying to steal from their exes or punish them can put the best interests of their children first, disclose their respective community assets and resolve their financial issues amicably and in a balanced manner. It does happen, and the children are spared the worst of the conflicts between their parents.

Sean was not built for that. For well over three years, he has spent a great deal of money on lawyers (he’s on his third now) prolonging the process and seeking to retain almost all of the cryptocurrency belonging to this community by the simple expedient of hiding it from Lisa and the court.

He’s denying Lisa her other property too, brazenly refusing her any entry at all since April 2019 into the house that she had called her own, despite signing a stipulation that she could go in to locate her belongings. She was “too late,” he said when she asked for access! Consequently, she only has received the small amount of her family’s furniture that he deigned to give her, and has never been able to collect any of her documents or keepsakes, often valueless but always close to her heart.

That is the kind of man Lisa is dealing with.

Before he started hiding their cryptocurrency holdings from Lisa, he sent her this proud announcement of a $400 “paper” gain in one day. Sean was already making money in crypto by November 2013!! When each bitcoin was worth about $1,000!! But in court he insists that he did not invest or trade!

And crypto came into the story in 2013, when he started coding, investing and trading in crypto. All that he talked about for years with family, friends and colleagues was crypto.

Yet he swore repeatedly in Court documents that he only controlled under 1.2 bitcoin when the couple separated in April 2019. In six years he accomplished almost nothing!

He announced a one-day crypto gain in November 2013, and spent significant gains in 2017 on a family vacation in Ireland. But he claims that he did not invest or trade. He attended crypto conferences every year all over the world, places where his fellow enthusiasts met and traded, and yet claims that he made no money trading in crypto.

It’s as if he is claiming that he was a professional gambler who visited Vegas regularly but never gambled there!


The couple’s tax history helped teach Sean how to hide his crypto assets from Lisa.

His initially prosperous startup failed early in their relationship, and he could not accept this failure. He begged money more than once from friends and family; the last time that he asked his mother for more money, she reminded him that one definition of insanity was repeatedly doing the same thing and expecting a different result each time!

Over Lisa’s objections, he refinanced twice and then took out a second mortgage on the couple’s home. An inevitable result of the ensuing bankruptcies, foreclosure and financial hardship was that tax problems arose.

According to the IRS, Sean had neglected to pay to the IRS his failed startup’s employee payroll taxes (meaning that he stole from his employees!). These tax debts, which were his alone, were not discharged in the couple’s bankruptcies. Because of these debts and his libertarian belief that taxation is theft, Sean‘s tax problems worsened during the marriage. He refused to sign or file any tax returns himself for about ten of the 18 years of the marriage.

Lisa was thus obliged at times to file “married filing separately,” the most costly way for a married person to file. Let me repeat that: Sean didn’t file, avoiding paying taxes entirely for many years; Lisa filed separately, increasing her tax burden. Unpaid taxes steadily increased.

Lisa’s email to the California Franchise Tax Board after they garnished the couple’s last joint bank account in 2012. Lisa had just cashed out her substantial Simple IRA, maybe $10K, maybe more, before the garnishment, and the FTB took it all, every cent.

Probably the most distressing consequence of Sean’s refusal to address the couple’s tax questions occurred in March 2012. Lisa had arranged a payment plan with California’s taxing authority, the FTB. Sean was supposed to sign a particular form, one that Lisa had already signed, in order to take advantage of that plan. He failed to do so. The FTB garnished their entire joint account, thousands of dollars in one fell swoop, because Sean would not sign on to a $300 per month payment plan.

Another email exchange the same day. Lisa was obviously distraught and scared. Sean seems to be laughing at her.

The couple immediately became “unbanked,” and no longer held joint accounts. When Sean had a bank account, money passed through it rather than remained on deposit, so that the IRS and FTB could not garnish what was there. He wasn’t going to let that kind of garnishment ever happen again. He used cash and crypto and avoided deposit accounts.

There were costs to being “unbanked.” Some, like the cost of the money orders with which Sean paid rent and for the prepaid debit cards with which he and Lisa paid most other bills, were relatively minor. Some, like the 2-3% that he paid check cashing services to cash his payment checks from clients who did not have a local bank account, added up (he cashed the checks of local clients at their local banks). Those clients without a local bank account included Rivetz, the one company that employed him during the marriage, which was located in Massachusetts. In 2017 and 2018 alone, Rivetz paid him close to $200K a year, at a cost to his family of something like $5,000 per year!

Tax evasion is not cheap!

Lisa’s big loss out of the couple’s being unbanked was Sean’s gaining additional control of all of the couple’s money. Lisa never knew what he did with most of his Rivetz earnings and most of the couple’s other money. He doled some of it out to her from his sock drawer, and used some more to charge up prepaid debit cards for the couple’s living expenses. He ran some through bank accounts and crypto exchange accounts, all used for spending and holding nothing material on deposit for any length of time. She no longer had the protection of a joint bank account holding family money; she no longer had checks to write herself.

From Sean’s point of view, hiding his assets in crypto beats hiding them in his sock drawer. Cash has the distinct disadvantage of never appreciating. Crypto, whether or not it is the enormous ponzi scheme that it appears to be, can and does appreciate, as well as make losses, and over the years the gains in the more established cryptocurrencies have exceeded their losses.

Sean must have been grateful finally for the IRS and FTB, because avoiding their clutches pointed him in the right direction to avoid sharing crypto community property with Lisa.


Investing in crypto is a better way to hide money than a sock drawer. That’s why the IRS and other law enforcement authorities are so concerned about it: money-launderers, ransom hackers and the like love crypto’s evasive capacities. Real money converted into crypto is almost impossible to locate.

Lisa discovered this in stages as her divorce progressed.

A selection from Sean’s LinkedIn resume in June 2020. “Cryptocurrency developer: Bitcoin, Omni Layer . . “. If anyone understands cryptocurrency, it’s someone who has coded in the field for years.

Stage 1: The branding about the blockchain holding a fixed and transparent record of every transaction forever was reassuring. She did not realize that identifying what Lisa and Sean owned would be a problem, even though she had been kept in the dark during the marriage. When Sean made his legally required disclosures in the divorce, they raised more questions than they answered.

Sean did disclose one cryptocurrency wallet, but it was one that he himself had worked on during his years of work for Omni, the Omni layer or Omni Foundation (crypto entities change their names a lot; Omni never seems to have incorporated anywhere). And while he disclosed the existence of the wallet in a timely manner, it took the first set of judicial sanctions for him to disclose its contents legibly 18 months later.

This wallet takes self-prepared to a whole other level; not only were the contents self-prepared, with hand-written notes and modifications in the initially sparse court filings, but the medium holding those contents, the wallet, was pretty much self-prepared too.

Tell me that Sean can’t play with that data however and whenever he feels like it!

The Santa Cruz Bitcoin and Cryptocurrency Meetup in about 2017 when it was quite popular. This photo adorns the meetup’s landing page.

He has admitted various crypto transactions which don’t appear to be in that Omni wallet, for example a $4,950 capital gain declared on his 2018 tax return (filed separately), but has yet to identify which wallet(s) that gain occurred in. Another example: he admits to purchases and sales of small amounts of crypto at the Santa Cruz Cryptocurrency Meetup, which he cofounded in 2014 and has run ever since, maybe 150 meetups, but professes to be unable to locate any records of these transactions.

This sort of stonewalling sounds trivial, for two reasons. First, only small amounts are in play. But the identifier of any wallet that Sean controls and wants to hide could potentially lead to much larger quantities of cryptocurrency in that and other wallets. Second, if Sean won’t or can’t produce the records, they can surely be found elsewhere. Right?

Stage 2: Wrong! After Sean’s failed self-disclosure, Lisa turned to crypto exchanges, third parties like banks and brokerages, which we believed would furnish account statements of Sean’s holdings.

Far from it.

Accounts in exchanges can potentially be hacked or, more importantly, subpoenaed, meaning compelled to disclose their customers’ holdings over time. Most exchanges compete with each other to be as unresponsive as they can to subpoenas so as to reassure their customers that disclosure of their crypto assets by subpoena is more than unlikely. They compete by being based offshore (e.g Sam Bankman-Fried’s FTX in the Bahamas), to make it harder to serve them with subpoenas or other legal papers from those having claims against them or, as in Lisa’s case, simply seeking information.

Here is BitFinex’s lawyer’s initial response to Jenn, Lisa’s lawyer, about her subpoena looking for Sean’s account information. She’s not trying to sue them, just to obtain information on her community property. The lawyer knew that: he had received the subpoena by email. Note the trick here, one that we’ve seen elsewhere. The lawyer suggests that Lisa doesn’t move forward without being certain that Sean had an account there. And how can Lisa be “certain” when Sean hid his accounts from day one? Crypto-skullduggery!

Lisa experienced this lack of response with almost every exchange that she subpoenaed.

It took several emails back and forth with help from her expensive crypto expert (see below) before Circle gave her what her Poloniex exchange subpoena sought. Of course, this was after Sean had denied having an account there which he could access! So Lisa had been obliged to spend good money obtaining information that Sean was supposed to give her himself. At least Circle was located in Massachusetts and accepted service there.

BitFinex, an exchange with relationships with Tether and Omni, a long-term client of Sean’s, refused point blank to give her anything. Most BitFinex and Tether entities are located in the British Virgin Islands, and can only be served at a cost of around $1,000 each. Yet because of these entity relationships, Sean is more likely to have had an account at BitFinex than at other unrelated exchanges.

BitFinex’s second response. The other counsel who have successfully effected service on BitFinex include those representing the NY State Attorney General, who have more resources than us! In February 2021 BitFinex paid an $18.5 million penalty in its settlement with the NY State Attorney General.

And Tether and BitFinex, whose crypto bro senior management and controlling shareholders are pretty much interchangeable, are widely accused of market manipulation and other financial fraud. When they have spent a fortune fighting federal and State regulators and paying penalties and the like, as they have done, how can Lisa expect them to be frank and honest in a divorce suit even if she does pay the excessive amount needed to serve them?

Another deterrent: cryptocurrency exchange accounts rarely hold much in the way of crypto for long. This is because crypto owners are all about hiding their crypto, and allowing third parties like exchanges to control their crypto makes it discoverable. The accounts allow individuals to exchange different types of crypto with each other or for cash, and for trading with third parties whom the individual does not know. Only newcomers, whom Sean calls “crypto-newbies,” leave their crypto on deposit for any length of time with any of the crypto exchanges. defines digital “cold storage.” Interestingly, the definition focuses on protecting the owner from digital hacking. The more important aspect of cold storage is that only the person in control of the wallet can access the crypto within it. Lisa was able to locate Sean’s Poloniex account records even though he refused to disclose them and denied their existence. She has no comparable access to his cold storage.

Experienced players like Sean leave all their crypto wallets in “cold storage,” meaning under their own control, and not the control of an exchange or other third party, and unconnected to the internet most of the time. “Cold storage” means on a thumb drive or comparable digital storage device.

Experienced players like Sean prefer to purchase, sell or trade crypto in person, so that no exchange is ever involved. If an exchange is involved, the players are normally in and out as quickly as possible.

Stage 3: Addressing the crypto-skullduggery that Sean engaged in to undermine court-ordered disclosure of his crypto assets.

Cryptocurrency has its own evolving language that we knew nothing about when this divorce proceeding started in 2019. Sean had already been using that language since at least 2013. And crypto bros caught on to lawyer’s games in using language, where if you don’t pose the question in exactly the right way, with exactly the right terminology, the person answering can duck the response that you are obviously looking for.

From the January 2018 Good Times newspaper, a Santa Cruz staple. The extract reviews Sean’s and his “best friend” Sarah Blincoe’s history with the Santa Cruz Cryptocurrency Meetup that they founded in July 2014. Note the “crypto-newbies,” and that the “fastest growing group” of attendees at his Santa Cruz meetings were “investors, traders and speculators.” But Sean of course never did any of that!!

An example of Sean doing this kind of crypto-skullduggery occurred in response to Lisa’s lawyer’s April 2020 request for “public keys” to wallets that Sean controlled in order to access those wallets herself. Crypto bros tend to control multiple wallets: here’s a random Quora answer on the question: “Diversifying your wallets is as important as diversifying your portfolio in general. . . . Using multiple wallets protects your crypto in much the same way that decentralization itself protects a coin from ‘issues’ like theft.”

Sean replied to this simple question three months later by ignoring its obvious thrust. “By public keys, I believe you mean addresses. This is not a reasonable request because addresses are generated for every transaction but not all wallets allow interfaces that allow viewing or exporting addresses. The keys would not show values and, further, the key information is provided in the transaction logs which are included.” Because he creates cryptocurrency wallets in his work, that may actually mean something. If so, I still don’t know what! You can see why I call this kind of evasion crypto-skullduggery!

Here’s another kind. In October 2021, the judge granted Lisa what is called a Motion to Compel Production of Documents. The goal of the Motion was to force Sean to disclose documents revealing the couple’s crypto assets under his control. In response, Sean stated repeatedly, as he had done all along, that he had disclosed all of such documents in his possession.

Another piece of Sean’s June 2020 LinkedIn resume, this one showing his Omni (all consulting) and Rivetz (consulting until March 2017, then employee) work. He was VP of Engineering when Rivetz was selling its tokens (see below) to investors.

That statement was likely accurate. But divorce law intends that he produce in court all of the records of the joint crypto wallets under his control. Only then will he reveal the couple’s assets. His statements that he had produced all documentary records in his possession were only accurate if he had deliberately avoided printing most records of his crypto wallets. In practice crypto wallets held in cold storage have no documentary records other than those printed by the person controlling them.

Saying that “I have given you every document that I have” may be accurate, but it’s again what I call crypto-skullduggery. Especially as Sean also swore to having made a “reasonable effort” to locate such documents. Couldn’t printing them have been done with reasonable effort?!

Stage 4. Lisa turned to a cryptocurrency expert to help her locate Sean’s crypto wallets.

Sean had disclosed one such wallet, the Omni wallet referred to earlier. But undisclosed wallets are almost impossible to locate, because unlike bank, brokerage or some exchange accounts (other exchange accounts allow owners to identify themselves simply with an email address made up for the purpose), none are identified by the owner’s name, social security number or other personal identifier: they are strings of 26-35 random digits (I think!) sitting on the crypto blockchain with millions and millions of comparable strings.

Think finding a needle in a million haystacks!

CipherBlade was cited in a recent article on locating hidden crypto in divorce cases.

Lisa had read a Wall Street Journal article about ShapeShift, a crypto company that Sean was intimately involved with. His “best friend” during the last five years of his marriage, Sarah Blincoe, a former massage therapist in her 30s who ran the Santa Cruz Cryptocurrency MeetUp with him, was the sister of its former CFO, Justin Blincoe. The Journal did not care for ShapeShift, which engaged CipherBlade to defend their reputation. That was good enough for Lisa, and she too engaged CipherBlade, who would prove to very helpful if, at $650 per hour, a little expensive!

That cost has limited the utility of CipherBlade to Lisa. 15.5 hours of analysis and investigation goes very quickly, and costs over $10,000! What CipherBlade could do was speak the crypto language, which enabled them to ask the right questions and respond coherently to questions raised by exchanges that Lisa subpoenaed. In other words, they were armed to address crypto-skullduggery. Their help is how Lisa obtained Sean’s Poloniex account records, referred to earlier.

Stage 5: The Court is apparently convinced that Sean owned more crypto than his one disclosed wallet when he and Lisa separated. Why else would it have ordered him to pay $30,000 to help Lisa in her discovery? She received the cash just before Christmas, and is now figuring out where to spend it the most productively.

There are several paths to obtaining the information that Lisa and the Court seek. Asking third parties has proved fruitful, as when Poloniex gave us Sean’s Poloniex account records after he refused to disclose them.

But even asking third parties has its limits: witness the Tether and Bitfinex fraudsters who may not be worth asking about Sean’s account records there because it’s a matter of public record that they lie whenever it suits them.

Lisa has already run across another limit. Rivetz had been Sean’s only employer during the marriage: most of the time he made what money he made by consulting or trading in cryptocurrency. In the normal course, a spouse can easily obtain her spouse’s earnings information from his employer. Not here!

In his court filings, Sean first stated that he was still owed business expenses by Rivetz, and denied having received anything above his declared salary from the company. He had been promised a six-figure bonus if and when Rivetz completed an offering of its tokens.

Which it did!

This portion of the SEC’s Complaint states that Mr. Sprague wrote the White Paper describing the Rivetz business model and RvT token. According to Sean, he wrote that paper, in his capacity as VP Engineering for the company. At home, he was very proud of that accomplishment.

Unfortunately, Sean was laid off by Rivetz at around the time of the couple’s separation, and the company pretty much closed its doors a few months after. Lisa accordingly had nowhere normal (VP HR, CFO or Controller) to turn to seek information about what Rivetz had paid him, in cash or crypto.

Typically bonuses to employees in crypto offerings are paid in crypto. Investors paid in Ether for their tokens, and Lisa suspects that Sean had Ether wallets which he has not disclosed. What to do next?

In September 2021, the SEC sued two Rivetz entities (one offshore) and Steven Sprague, Sean’s former boss, for violations of federal securities laws and defrauding investors in Rivetz! Sean had had one real job in 19 years of marriage, as VP Engineering, and the feds are prosecuting his employer!

Here is the federal prosecutor’s summary in the Complaint of what Rivetz did wrong:

“Between June and September 2017, defendants Rivetz, Rivetz Int’l, and Sprague offered and sold digital tokens called “RvT.”  More than 7,200 investors worldwide purchased RvT tokens for digital assets then worth approximately $18,000,000.  Over 30% of these investors were located in the United States.  Defendants marketed the RvT tokens as an investment opportunity, . . ..  But, defendants’ offer and sale of RvT tokens was not registered with the SEC, and investors did not receive the disclosures required by the federal securities laws.”


The report of the Massachusetts civil process server, called a Constable in that State, on his failed attempts to serve Steven Sprague. I thought that Adam had done all that he reasonably could to effect service, and would recommend him to others.

Lisa is attempting to subpoena Steven Sprague, believing that he likely retains Rivetz records, and will certainly remember whether or not he paid Sean a bonus in crypto.

But Steven is a crypto bro, like Sam Bankman-Fried. Steven used a portion of the proceeds of the RvT token offering to buy a house in Grand Cayman, just as SBF bought real estate in the Bahamas from FTX’s crypto dealings.

Not entirely unexpectedly, Steven is avoiding service of Lisa’s subpoena! He likely feels that he has enough going on already.

Obviously, this story isn’t over, and the Court is doing its best to help Lisa uncover the truth. But major challenges remain to be overcome in this hidden and devious world of crypto, as seen from the point of view of an ex-wife.