This is all public knowledge that any other programmer could figure out. So don't bash me for pointing it out. :)

As for estimates, you can probably get in the ballpark if you look at some examples from the ETH chain.

Just looking at this TX on the ETH chain for example: https://etherscan.io/tx/0xb036108a3993279570d7b13adb31c46405fc31d67ab5da0a89d9a23e60058d6f

You can see that the actual TX fee/cost was 0.00052788346417 Ether. I don't know what TX fees are currently on the ETC chain.

I'm not sure what the smallest allowed "send" amount is, but I assume it's 0.000000001 ETH.

So, if you add that to the TX fee, then you get 0.00052788346418.

If you multiply that by ETC's current price (~$1.03) then it should cost around $0.0005437199681054 per account.

Thus it would cost (approximately):

• 100k accounts for ~$54.37
• 1M accounts for 10x that @ ~$543.70
• 5M accounts for 5x 1M @ ~$2718.60

I don't know how many accounts have been created on the ETC chain, but I'd imagine no more than a few million?