I am not a technical persona, but as far as I understand the whitepaper they have interesting concepts

## Technical Highlights:

- Written in enterprise friendly Java
- Based on secure, MIT licensed NXT for cryptography and p2p consensus code
- Architected with re-use for private chains in mind
- Optimized for speed and low memory usage
- Massively scalable through the use of not one single blockchain, but a chain of
blockchains (only the last one in the chain is required on each node)
- On application level contains all the latest 2.0 cryptocurrency features and more,
including custom asset-to-asset trading, **distributed apps** and end-to-end
encrypted instant messaging

A interesting Idea is the Distributed Services Architecture (DSA)

These are not Smart Contracts, but everyone can write a Service feature an run his own application with the
HEAT blockchain as backbone. 

## Some Examples:

1. Oracle service
An oracle writes a (foreign) fact to the blockchain. Through an oracle it
becomes possible to create a transaction on the HEAT blockchain that does not
execute until an event outside the HEAT blockchain has happened. A Good
example of using an oracle: Bob sends Alice HEAT tokens but the transaction
will not execute before the oracle service writes to blockchain the transaction
details of Alice about her BTC payment to Bob.
2. Escrow service
Requesting a new escrow, both parties send money to the escrow. Escrow will
not release funds before both parties agree. Could be combined with oracle
service where escrow releases funds based on an oracle saying the
requirements are met.
3. Time-based data decryption (secret reveal) service
Based on a certain date [block height], transaction on the HEAT blockchain or
some other real world event coming from an oracle this service decrypts and
publishes / sends to pre-defined recipient some secret you gave it in advance.
4. Co-signer service
For use with multi-sig transactions on BTC/ETH/HEAT/etc. The user of this
service will use the service provider public key as a required co-signer of a
multi signature transaction. When the requirement is met the service provider
will add his signature to the multi-sig transaction which will then execute.
5. Gateway trade bot service
With a gateway trade bot service you can buy/sell cryptocurrency on an
exchange.
An example of such a service would be users sending ETH to the service ETH
address. When received the service will immediately sell the ETH for BTC and
transfer the real BTC for the seller.
6. Webshop simplification
If you sell digital products on the internet (music or video files for instance) you
could create a service where you either return a link to download the digital
product,
or you could return a cryptographic key for the buyer to unlock the digital
product.

ICO runs till August 8 2016. If you are interested you have still time to invest. On the BitShares Openledger you can also find an OPEN.HEAT token.

Crowdsale: http://heatledger.com/ico.htm

Whitepaper:
http://heatledger.com/HEATWhitepaper.pdf