MultiChain Developer Q&A - Recent questions tagged off-chain-data

hyperledger channels vs multichain streams

Mon, 01 Oct 2018 16:19:18 +0000

comparing hyperledger channels, where data can be stored offchain and hashed (but i don't think it is true p2p storage), with the ability for data on different channels to be private from other channel subscribers... this would be nice to have in streams, so in the supply chain example they give, farmers cannot access information from the supermarket data, but they are on the same chain.

The only way to do this on Mutichain is encrypting the data as it goes into the stream - any chance of adding read permissions in the future as an alternative?..;)

comparing multichain vs holochain, proximaX, sia, storj etc...

Mon, 01 Oct 2018 15:35:16 +0000

I am considering building a country specific distributed storage solution, where users get paid to help store content.. do you think multichain can handle this (with or without encryption options)?.. It would be semi centralized to handle payments, but just thinking ahead..is offchain data storage features of Multichain better suited to in house corporate management of data, or could it be extended to something larger?..

Off-Chain Data – risk of logical data loss?

Wed, 05 Sep 2018 09:08:47 +0000

Hi, lets assume, that you run a 4 node cluster in two different data centers. Let’s also assume, that each node can mine new blocks and you are using a mining-turnover that is greater 0.

What will happen in a case of a network failure, where both data centers are separated from each other, but internally intact. The chain might create a fork and after both chains are reunited, the blocks added to the „shorter chain“ during the separation phase would be eliminated temporarily.

So here is the question: How will the system manage the off-chain data for blocks in the shorter chain? As I understood transactions in the shorter branch re-enter the memory pool of nodes, which leaves them in the regular situation of waiting for confirmation, but being visible to all nodes. Doesn’t this leave a theoretic possibility of losing data from the mem pool, while the old/new blocks are re-entering the system and the off-chain data is already written?