Every Block Remembers the Last Bitcoin Valentine's T-Shirt

A good love note remembers what came before. This tee takes that idea into the bitcoin chain. An open round locket on a chain, drawn with no photo inside, sits above three short lines of white capitals that say every block remembers the last, and so does the wearer.

Every block in the bitcoin chain carries the hash of the block before it, which is the link that holds the chain together. The developer documentation calls this field the previous block header hash. That is what the shirt means by remembers: each block keeps a fingerprint of the one before. The locket is the Valentine's part, a plain open shape with no photo inside, and the two short lines say the wearer remembers too.

Wear it for Valentine's Day, or give it to a partner who enjoys a love note that takes a moment to decode. It also suits a Valentine's dinner where the talk drifts toward blockchains. Valentine's Day is Sunday, February 14, 2027, and the shirt ships from the USA once printing is finished, so pick a date with some margin.