Henry Mayhew (25 November 1812 – 25 July 1887) was an English social researcher, journalist, playwright and advocate of reform.
 He was one of the co-founders of the satirical and humorous magazine "Punch" in 1841, and was the magazine's joint-editor, with Mark Lemon, in its early days.
 He is also known for his work as a social researcher, publishing an extensive series of newspaper articles in the "Morning Chronicle" that was later compiled into the book series "London Labour and the London Poor" (1851), a groundbreaking and influential survey of the city's poor.
Lemon Wallet was a cloud-based digital wallet that allowed users to store digital copies of credit cards, debit cards, reward cards, as well as identification, and other card information.
 The service was released in July 2011 and the company is based in Palo Alto, California, United States.
 Wences Casares is the company’s CEO.
Regina M. Calcaterra (born 1966) is an American attorney and a New York Times Best Selling author.
 She is a partner at Wolf Haldenstein Adler Freeman and Herz and formerly served as Deputy General Counsel to the New York State Insurance Fund and the executive director to two recent New York State Moreland Commissions, including the Utility Storm Preparedness and Response Commission and the Commission to Investigate Public Corruption.
 Her state appointments followed her service as Chief Deputy County Executive to Suffolk County Executive Steven Bellone.
 She is also an advocate for foster children and formerly served as a frequent commentator of policy and politics appearing on CNBC, Newsday, and other local media outlets.
The Blue Diamond Society(Nepali: नील हीरा समाज) is an LGBT rights organization in Nepal.
 It was founded in 2001 to advocate to change the existing laws against homosexuality and to advocate for the rights of Nepal's marginalized gay, transgender and other sexual minority communities.
 BDS also aims to educate the Nepalese on proper sexual health, advocate for queer minorities in local governments, encourage artful expression of LGBTQ+ youth, and document violence against Nepalese queers.
 Another contribution to Nepal's LGBTQ+ communities is to provide care, counseling, and services to victims of HIV/AIDS.
 Blue Diamond Society is currently led by Executive Director Manisha Dhakal, and was founded and led until 2013 by Sunil Babu Pant, the first gay legislator in Nepal's history and one of 29 experts at the meeting for The Yogyakarta Principles.
 One of the Blue Diamond Society's most recent accomplishment occurred when Sunil Babu Pant and fellow human rights activists filed a case with Nepal's Supreme Court in 2007 that led to a verdict by the Court ordering the government to repeal all laws that explicitly discriminate against members of the LGBT community.
 The law also ordered the government to legalize gay marriage.
Uzoma Dozie (born November 2, 1969) is a Nigerian banker, investor, economist and also advocate of technology.
 Uzoma is the Group Managing Director and Chief Executive Officer of Diamond Bank Plc, a leading retail financial institution in Nigeria and also served as Executive Director of Corporate Banking and Executive Director of Regional Business Lagos & West Regions.
Wences Casares (born February 26, 1974) is a technology entrepreneur with global business experience specializing in technology and financial ventures.
 He is an advocate of bitcoin and he has said he believes that bitcoin will be bigger than the Internet.
Charles A. Doswell III (b. November 5, 1945) is an American meteorologist and prolific severe convective storms researcher.
 Doswell is a seminal contributor, along with Leslie R. Lemon, to the modern conception of the supercell, which was developed originally by Keith Browning.
 He also has done research on forecasting and forecast verification, especially for severe convective storms, and is an advocate of ingredients-based forecasting.
A digital wallet refers to an electronic device that allows an individual to make electronic transactions.
 This can include purchasing items on-line with a computer or using a smartphone to purchase something at a store.
 An individual's bank account can also be linked to the digital wallet.
 They might also have their driver’s license, health card, loyalty card(s) and other ID documents stored on the phone.
 The credentials can be passed to a merchant’s terminal wirelessly via near field communication (NFC).
 Increasingly, digital wallets are being made not just for basic financial transactions but to also authenticate the holder's credentials.
 For example, a digital wallet could verify the age of the buyer to the store while purchasing alcohol.
 The system has already gained popularity in Japan, where digital wallets are known as "wallet mobiles".
 A cryptocurrency wallet is a digital wallet where private keys are stored for cryptocurrencies like bitcoin.
Wendell Potter (born July 16, 1951) is an American consumer advocate, "New York Times" bestselling author, consultant, and former health insurance industry executive.
 A critic of HMOs and of the tactics used by insurers, Potter is also an advocate for major reforms of the industry, including universal health care.
 Prior to his resignation in 2008, Potter was vice president of corporate communications for the health insurance company CIGNA.
 In June 2009, he testified against the HMO industry in the U.S. Senate to expose health insurance industry practices.
 He has served as senior analyst at the Center for Public Integrity, a fellow at the Center for Media and Democracy, and a consumer liaison representative to the National Association of Insurance Commissioners.
 Potter is a regular contributor to "The Huffington Post" and Healthinsurance.org.
nTrust is a Canadian technology business, headquartered in Vancouver, BC, Canada.
 The company provides a bitcoin wallet and exchange, primarily to Canadian members.
 nTrust offers the ability to buy or sell bitcoin and store it, send it to another member or an external bitcoin address, or withdraw it to a bank account.
 nTrust is a money services business registered with the Financial Transactions and Reports Analysis Centre of Canada (FINTRAC) and is strictly regulated.
 nTrust is also PCI-DSS Level One certified.

Question: Which advocate for Bitcoin is also an executive with Lemon Wallet?
Answer: Wences Casares