An average block is about 1 MB in size.
Although it seems that max. 4 MB is allowed.
So 4 (MB) x 6 (10 minutes per hour) x 24 (hours per day) x 365 (days per year) x 15 (years of the timechain) = 3.1 TB
Looks like we're still good with 1.6 TB. đ
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