How to query the block hight of the issued asset ?

Question

I issue an asset, but how to query the block height of the issued asset ?

What is the number of the block which contains the issued asset?

Answer 1

The quickest way to find this is to look at the first number in the asset's assetref.

Comments

assetref:71-513-37503    
What is meaning of the second and third number?

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How to mark some blocks which are important.

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You don't really need to use the assetref, but the second number is the byte offset of the issuance transaction within the block, and the third is an encoding of the first two bytes of the issuance txid.

There is on way to mark some blocks are important within MultiChain itself – you would have to take care of this within your application.