Smart Contracts - a suggested format

laurentmt

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Quote from: andrewbb on July 26, 2014, 10:20:04 AM

Quote from: laurentmt on July 26, 2014, 09:02:46 AM

Open Bazaar and Open Transactions propose a very close concept (Ricardian contracts).
Am I right if I say that your idea is to sign contracts when they are sent to the network for validation and registration into the blockchain (like transactions in Bitcoin) ?

As I just posted above, this is the data structure only. I have not posted the "smart code" because that is very application-specific.
But, generally, yes. This would be the data structure stored within the blockchain. It follows contract law with total granularity and works for finance. It also works for any possible "smart contract" implementation.

It's good to see that different persons/teams have very close approaches on the subject.
Having a standard for this kind of thing would be great for interoperability (an old dream) !
In absence of a standard, similar approaches allow to imagine possible gateways among heterogeneous systems.

Quote from: andrewbb on July 26, 2014, 10:20:04 AM

(fyi, I have about 15 years of software architecture experience and over 15 years of monetary science study, so I am trying to make this as simple to understand to people who might not have the same domain experience.)

Thanks for that. The first time I've read the term "ricardian contract", it sounded like a very complicated concept. A bit intimidating !

Do you plan to release some sample code or a document giving more details about some use cases ?
Seeing how this data structure can be used in the context of specific use cases would be very interesting.

mtomcdev

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Quote from: gmaxwell on July 26, 2014, 02:32:10 AM

This doesn't seem to have anything to do with smart contracts though, perhaps you should be using another word here.

The general idea of smart contracts is that the contract itself is a kind of (very-)narrow artificial intelligence which takes care of its own enforcement.

Is that correct that most likely a function would be included in the smart contract using the built in Bitcoin scripting feature and that would take care of the enforcement of the contract?

andrewbb

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So, yes. Each entry in the "transaction stack" would be sent to the blockchain.

Now. There are OTHER ways to verify data integrity in a P2P network besides the blockchain, but that would be an application-specific implementation decision. Also, keep in mind that data structure works for all contracts so might be implemented in a private database too.

andrewbb

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Activity: 81

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Quote from: laurentmt on July 26, 2014, 09:02:46 AM

Open Bazaar and Open Transactions propose a very close concept (Ricardian contracts).
Am I right if I say that your idea is to sign contracts when they are sent to the network for validation and registration into the blockchain (like transactions in Bitcoin) ?

As I just posted above, this is the data structure only. I have not posted the "smart code" because that is very application-specific.

But, generally, yes. This would be the data structure stored within the blockchain. It follows contract law with total granularity and works for finance. It also works for any possible "smart contract" implementation.

(fyi, I have about 15 years of software architecture experience and over 15 years of monetary science study, so I am trying to make this as simple to understand to people who might not have the same domain experience.)

andrewbb

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Activity: 81

Merit: 10

Quote from: gmaxwell on July 26, 2014, 02:32:10 AM

This doesn't seem to have anything to do with smart contracts though, perhaps you should be using another word here.

The general idea of smart contracts is that the contract itself is a kind of (very-)narrow artificial intelligence which takes care of its own enforcement.

That is kind of true. This is the data structure. I kind of term it "smart code" that does the enforcement/artificial intelligence. That would be application specific, of course. But the data structure will work for ANY application.

laurentmt

sr. member

Activity: 384

Merit: 258

Open Bazaar and Open Transactions propose a very close concept (Ricardian contracts).
Am I right if I say that your idea is to sign contracts when they are sent to the network for validation and registration into the blockchain (like transactions in Bitcoin) ?

gmaxwell

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Merit: 8808

This doesn't seem to have anything to do with smart contracts though, perhaps you should be using another word here.

The general idea of smart contracts is that the contract itself is a kind of (very-)narrow artificial intelligence which takes care of its own enforcement.

andrewbb

member

Activity: 81

Merit: 10

Quote from: screwUdriver on July 25, 2014, 09:04:21 PM

I don't think this would work.

There would be just too much room for interpretation on these contracts. It would also be possible to dispute facts of the cast (for example if the product was actually delivered or not).

The above is the data format. You are talking about validating contract specifications (Description).

Also, the "Delivered" entry in the stack is not made until the person receiving the delivery accepts it. The structure does support in process Deliveries and partial Deliveries.

It is "smart code" that analyzes the data during the transaction (for rollup, display, and status).

screwUdriver

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I don't think this would work.

There would be just too much room for interpretation on these contracts. It would also be possible to dispute facts of the cast (for example if the product was actually delivered or not).

andrewbb

member

Activity: 81

Merit: 10

This might not be intuitively obvious, so here is a transaction stack for Buying 100 IBM for a final price of 5100 USD:

Initiating a transaction, 5000 USD, myCommerceID
Terms, 100 IBM, myCommerceID
Corresponding Value, 100 IBM, hisCommerceID
Modification, 5100 USD, hisCommerceID
Accepted, contract, myCommerceID

[deliveries on both sides of the contract]

andrewbb

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Activity: 81

Merit: 10

One might envision the "transaction stack" of selling 100 IBM for a final price of 4900 USD:

Initiating a transaction, 100 IBM, myCommerceID
Terms, 5000 USD, myCommerceID
Corresponding Value, 4900 USD, hisCommerceID
Accepted, contract, myCommerceID
Delivered, 100 IBM, myCommerceID
Delivered, 4900 USD, hisCommerceID
Completed, completed, myCommerceID
Completed, completed, hisCommerceID

The words can be changed. That's the alpha version. The important part is a Time Stamp on every item in the transaction stack with sufficient granularity to describe any contract or transaction.

andrewbb

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Activity: 81

Merit: 10

One table with 5 columns:

Transaction ID
Commerce ID - person/entity identifier
Item Type - initiating value, terms, value, delivery, notice, status
Description - quantity and value OR terms OR status/notice messages
Time Stamp

I think this will work for any contract or monetary transaction possible. It's the result of studying monetary science for many years.

I have a working alpha prototype that shows viability as a stock exchange (or any other type of exchange). Code is available, if interested.

Blockchain technology is one solution to ensure data integrity.

The Commerce ID can be chosen by the individual on a transaction basis or grouped and made public or private or combination thereof. That provides privacy with accountability.

Topic: Smart Contracts - a suggested format (Read 1154 times)