MultiChain Developer Q&A - Recent questions tagged items

How can we use Timestamps in Multichain ?

Sat, 01 Jun 2019 11:41:51 +0000

I am actually using Data Streams for my project. There is a point where i need to timestamp the items that i am publishing to the stream.

as far as i know, each Multichain transaction is timestamped.

However, i need the timestamp to be appended to the metadata of my stream item. so i have 2 questions;

1. How exactly does Multichain ascertain the accuracy of a timestamp ? does it use the PC's time, which can be unreliable and can easily be hacked. or does it use some internet time protocol ? Please elaborate

2. How can a develop access the timestamp at the time of PUBLISHING the item to the stream ? so that we can use it in our steam item's metadata ?

Please let me know at the earliest

Get last item published in stream

Fri, 08 Feb 2019 13:49:56 +0000

Am new to multichain.. got basic question about retrieving latest items from stream.

Can one relies on 'liststreamitems' with start = '-1' and count ='1' to retreive last published item in stream?
Is it guarantees that last item appended is always the last item publish.

if mining time at one of node took longer time than others, can order of items changes from one node to another. and items orders would differ from order they being actually published?

For example, there 3 publishers (a, b & c) subscribed to certain stream 'testStream'.

if (a) then (b) published new record (item1) to 'testStream'.

could (c) see the same order or it can be swapped due to its mining time or other reason?