An old address of one of the Bitcoin whales has returned to activity after 13 years and seven months of inactivity, having transferred 0.00079 Bitcoin (about $56), a very small fraction of a fortune currently estimated at around $147 million.

Chain data from the BitInfoCharts platform shows that the old address “1NB3ZX…” received 2,100 Bitcoin (BTC) on July 5, 2012, when the price of Bitcoin was around $6.59 per coin. At current prices, the value of this amount is about $147 million, meaning an initial investment of around $13,800 has turned into an unrealized gain exceeding 10,000 times.

This movement has attracted the attention of transaction tracking platforms such as Whale Alert and LookonChain, which monitor what are known as Satoshi-era addresses, a term often used to refer to coins that were accumulated in the early years of Bitcoin's history.

Data from BitInfoCharts indicates that the address was funded through a single large deposit on July 5, 2012, and then remained inactive for nearly 14 years.