In Estonia we have been using digital ID cards for a while. It is common for us to vote using our laptops or phones. In fact 43.8% of people in Estonia voted online in the last election. We also use our ID cards to sign rental contracts.

Essentially, the way this works is by using a ‘qualified electronic signatures’. This is an EU standard now. As digital identity cards are being rolled out across the European Union it is important that technology can keep up with these to keep them interoperable. Nation states in the European Union are using different novel implementations to roll out their national digital ID card programs.

The roadmap is simple. Sinelock as a useable piece of software and app will launch in Beta in January. To use the software you will need to pay in SINE. That is the utility of the coin.

Sinelock is an Estonian based project which uses multi-signature contracts and digital identity cards or advanced digital signatures to sign contracts for digital art. These contracts are then stored on an immutable blockchain.

“Reality is that there is no flagship online application that is itself deserving such an investment.”

Overview of the German identity card project and lessons learned (2020 update) — Thales

So this feature will be a part of the Groovy platform. So all Groovy holders will be receiving an amount in the coming weeks of SINE too, as we are lovely people. A snapshot has already been taken and this will be sent out gradually.

Token information



Total Supply:

100 000



Current circulating supply:

95 000

Contract address:


Risk Disclaimer

Please note that the ‘ownership’ of the ERC20 token 'SINE’ token: 0xeb2c0e11af20fb1c41c6e7abe5ad214e48738514 implies no ownership of physical assets nor does it imply ownership of any property. All risk for gains or losses made from the ‘SINE’ token are the responsibility of the person who has interacted with said contract on the Ethereum blockchain.