{"product_id":"600-seconds-heartbeat-t-shirt","title":"600 Seconds Heartbeat T-Shirt","description":"\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003eI designed this t-shirt as a tribute to the steady, predictable rhythm of the Bitcoin network. The \"600 Seconds Heartbeat\" T-Shirt uses the number \u003ccode\u003e600s\u003c\/code\u003e because that's the target time, 10 minutes, between each new block being added to the timechain. For the original graphic, I paired this number with a clean, minimalist EKG (heartbeat monitor) line. It's my visual metaphor for the constant, reliable pulse of the protocol. It’s a piece of designer Bitcoin apparel printed on a premium, comfortable t-shirt. 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