After Angelhack at the weekend I decided to spend more time understanding Blockchain, and coincidentally it’s Blockchain Summit London this week.

These are my notes, focusing on potential uses and some of the challenges.

TLDR: You need Distributed Ledger Technology or blockchain when multiple people are involved and they don’t trust each other. Otherwise you could use a database.

The first talk I attended was an enjoyable session from Valeriy and Tatiana from MyWish which is a platform for creating smart contracts without programming skills.

Tatiana took us through the different smart contract options:


  • Popularity and openness
  • Overloaded
  • Complexity in decisions
  • Bugs in smart contracts

Bitcoin and RSK

  • Bitcoin only simple smart contracts
  • RSK: Ethereum virtual machine + own cryptocurrency SBTC
  • 2 blockchains locking and releasing
  • Cons: confusing with addresses, distrust

### NEO

  • Already in production
  • High speed
  • Two currency (NEO & GAS)
  • Huge contract price but free contract call


Tatiana gave the following smart contract applications:

  • Insurance (flights)
  • Delivery (pizza)
  • Crowdsale
  • Last will
  • Marriage contract / family budget

Valeriy talked about a couple of possible contract applications:

  • The lostkey contract transfers your wallet contents to a backup wallet when it hasn’t been used for some time
  • Multi-signature wallets allow release of funds only with signatures from multiple parties
  • Delayed payment contracts can protect the wallet owner from being made to transfer funds when under threat

MyWish offer various Blockchain-related development services including Blockchain and Ethereum development, smart contract development and web/native mobile development.

Jim Mclean of IBM talked about how blockchain will fundamentally disrupt the way we do business.

Wealth is generated by the flow of goods and services across business network in transactions and contracts. Think about how you control change of property. In some cases (e.g. property) this involves a trusted third party, and it costs £££.

Also think about your digital assets. There is no secondary market for that digital market. Jim’s children are back buying vinyl. There is a secondary market for vinyl. Think about your digital identity. Medical information. Who are you going to authorise to see what, where and when?

Cash is an asset, but has the challenge of anonymity. Try to go and buy and large value item, e.g. a car, for cash. It’s practically impossible. The dealership can’t take cash. They have to know AML and KYC.

IBM - Blockchain Opportunities

IBM is working with the Hyperledger Fabric project.

The Food Trust programme allows buyers to determine which food from which farm from which shop, is contaminated. In 5 minutes, not 10 days.

Botchain CEO Rob May talked about emerging problems in AI, and Blockchain as a solution

Ref: The AI Revolution: The Road to Superintelligence

With AI, software isn’t changing but the behaviour is (as it learns).

AI can misbehave. See Open Boats game and Microsoft Tay.

Open AI Game

Botchain is a identity system for tracking bots, based on Ethereum.

Houman Godarzi discussed how Blockchain can disrupt the travel and transport industries.

Blockchain is useful when entities don’t trust each other. For 90% of use cases you can use a database instead.

It’s useful for tracking something of value on a journey. Spare parts, valuables; when there’s a change in custody.

Also for codifying agreements. Airport charging rules are complex; every time an aircraft goes through they need to pay for landing and parking (per second).

Certification: Heathrow doesn’t trust me, but I need to prove I’m a pilot.

iatacoin is a project testing the waters of how they can accelerate movement of money from agents to airlines.

Next session, Chris Sherrington from Centrica: Currently data in the energy industry tends to be chunky, with quarterly systems. The industry resolves itself to half hour detail. Distributed generation assets are set to increase by 60% over the next 5 years. There will be 75Bn devices connected in the next 5 years. It’s an interesting market when you start paying people to use your product.

Centrica Shifts in the Energy Market

The Energy Web Foundation is an open-source, scalable blockchain platform specifically designed for the energy sector’s regulatory, operational, and market needs.

Understanding the Power of DLTs to Better Server Customers

Oracle is launching blockchain as a service soon, based on Hyperledger.

Currently there can be 10 players between advertiser and consumer. Mindshare is looking to make this chain more transparent.

Self-Sovereign Identity

Guy Davis of Blockpass explained how their eponymous product bring supports the Internet of Everything (where humans, companies, objects and devices come together) through Self-Sovereign Identity (SSI). SSI fulfils three basic requirements:

  • Control: Users must have control over their identities, including over who has access to what aspects of their identities
  • Security and Integrity: user’s digital identities must be protected from unauthorised access, use, disclosure or modification, and they must be able to trust that the integrity of their data is maintained throughout its lifecycle
  • Portability and Sovereignty: users must be able to use their identities to identify themselves without seeking permission from, or being tied to, a service provider and must be able to transfer their digital identities freely. Additionally, their digital identities must be fully “sovereign”, i.e. their digital identities cannot be taken away from them.

Blockpass and Decentralisation

A team at Edinburgh university is working on adding support for Zero Knowledge Proofs, which means the user can identify himself or herself without divulging any personal information to the to other party.

In Blockchain and Social Networks, Where Can It Go? Maxym Tsaryk of talked about reinventing itself as a blockchain-based social network. has had well-publicised problems arising from its allowing anonymous posts. Now the company is seeking to change its model by introducing its own tokens that allows users to ask questions. Maxym stated that the plan was to migrate all users, which would require them to go through a KYC process; those who prefer to remain anonymous will not like this.

Kate Baucherel, who was moderating the session asked Maxym how how they would meet GDPR requirements, particularly the right to be forgotten, when the data is stored immutably on blockchain. Maxym said he’d need to speak to his tech people about that.

Blockchain for Digital Rights Management was, for me, the best panel session of the day. Sammy Andrews, Rob Learney and Marcus O’Dair discussed with Alex Milne Turner current challenges in the music industry and how blockchain might help.

There are challenges with secondary ticketing. Blockchain could help, or eliminate secondary ticketing.

When artists need to be paid, the data isn’t always present, or correct. Even then, it might take a year for artists to be paid. Collecting organisations won’t like the increased efficiency and dis-intermediation that blockchain brings.

Organising song rights is complicated. In addition to a distributed rights database, you can have machine readable rules on how those songs can be used. Some versions of Blowing in the Wind aren’t attributed to Bob Dylan.

Middle men are already being dis-intermediated. Previously you needed a distributor. Now artists are doing deals directly with Spotity.

The Big 3 record companies won’t have a choice to adopt blockchain. Services are already getting lawsuits from mis-attribution.

Rob: a blockchained music solution will arrive. Sammy is excited that there are so many potential applications.

The Unconfirmed Podcast with Laura Shin covers Insights and Analysis from the Top Minds in Crypto and is available here