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Bitcoin

Galaxy Research Flags Rare Double Alert From 2013 Bitcoin Coin

Galaxy Research said a redeemed 2013 Casascius Bitcoin triggered two valid alerts after returning to the same address in one block. The rare event occurred because two separate transactions w

AnonymousCryptoCompass newsroom
July 9, 2026
3 min read
NEWS
Galaxy Research Flags Rare Double Alert From 2013 Bitcoin Coin
CryptoCompass editorial visual for bitcoin coverage.
  • Galaxy Research said a redeemed 2013 Casascius Bitcoin triggered two valid alerts after returning to the same address in one block.
  • The rare event occurred because two separate transactions with different IDs involved the same monitored wallet.
  • The redemption also moved two one-satoshi dust deposits before Bitcoin continued trading near key support levels.

A 2013 Casascius 1 BTC coin generated an unusual onchain event after its redemption triggered two separate alerts within the same Bitcoin block, according to Galaxy Research. The event occurred when the redeemed Bitcoin briefly returned to the same legacy address before moving again, creating two valid transactions that involved the monitored wallet and prompting Galaxy's tracking system to issue two alerts.

Two Transactions Trigger Separate Alerts

According to Galaxy Research, the redeemed Bitcoin did not leave the address permanently after the first transaction. Instead, the proceeds returned to the same legacy address before another transaction spent them again within the same block.

Because Galaxy's alert system identifies activity using both the transaction ID and wallet address, each transaction produced a separate alert. The research team said the notifications were not duplicates because each transaction carried a different transaction ID.

Galaxy also explained that its protection against repeat notifications only blocks alerts in subsequent blocks. It does not suppress multiple alerts generated inside a single block, making this an uncommon address reuse case.

Galaxy Head of Research Alex Thorn described the activity as unusual. However, he said the firm had no broader explanation beyond monitoring blockchain activity as it occurs.

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Dust Transactions Add Another Detail

Galaxy Research noted the legacy address had received two separate one-satoshi dust transactions before the redemption. Those tiny deposits remained in the wallet until the coin moved.

The redemption transferred 1.00000002 BTC, including the dust. According to Galaxy, 0.99899300 BTC then returned to the same address before another transaction spent it again, creating the second alert.

Bitcoin Holds Near Key Support

Meanwhile, Bitcoin traded near $62,900 during the event. The chart showed the asset recovering modestly after falling toward the $59,000 area earlier.

However, the 50-day moving average remained below the declining 200-day moving average, indicating the broader trend stayed bearish. Immediate support stood near $60,000, followed by $57,800. Meanwhile, resistance appeared around $67,900, then $72,900, with stronger resistance near the 200-day moving average between $76,000 and $78,000.

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