Need help with a query from a Tick HIstory client.
I have just detected the below, and just wanted to confirm the keys are always unique and never change?:
• I’ve found Future contract Milling Wheat has two chain ric codes historically with the same name, one upper case, and the second lower case:
looks to be Milling Wheat EURO
Historical API “key” returned: VjF8MHgzMDAwMDAwMDAwMDAwMDAwfDB4MzAwMDAwMDAwMDAwMDAwMHx8fHx8fHwwI0JMMjp8
looks to be Milling Wheat FRF
Historical API “key” returned: VjF8MHgzMDAwMDAwMDAwMDAwMDAwfDB4MzAwMDAwMDAwMDAwMDAwMHx8fHx8fHwwI2JsMjp8
o My question is can I use the API “key” returned here to always distinguish the uniqueness between the historical chain ric “Identifier”? Do these “key” values ever chain/update?