15-Year-Old Physical Bitcoin Redeemed for $1.78 Million in BTC

A 15-year-old time capsule got cracked open Tuesday when a physical coin embedded with the private key to a Bitcoin wallet was activated on-chain, giving the holder access to roughly $1.78 million in BTC. The collectible, part of the Casascius Physical Bitcoins series, held a private key tied to a wallet containing 25 BTC—worth less than $100 total when minted in December 2011, per Casascius Tracker.

The coins, designed by Bitcoin developer and enthusiast Mike Caldwell, were originally meant to be a proof-of-concept and conversation starter, according to the project's website. Each came with its own Bitcoin address and a private key concealed beneath a tamper-evident hologram. Peel the hologram, reveal the key, and the BTC is yours for the taking. Or in this case, the sweeping.

🪙 CASASCIUS COIN REDEEMED — S1-COIN-25 (25 BTC face) swept for 25.0000 BTC ($1.78M) A physical Casascius bitcoin from the 2011-2013 mint has been peeled and the private key swept on-chain. Address: 1tLPQwd6wjvZpreivwHsEuU2ceSv6zaon Also in our DB: Noah Doe #38977 ·… — Galaxy Research (@glxyresearch) June 3, 2026

What began as a quirky talking piece has since morphed into a serious collectible, riding Bitcoin's precipitous climb over the years. Unredeemed coins carrying anywhere from 0.1 BTC to 1,000 BTC now trade at a premium to their face value on marketplaces like eBay, and even unfunded coins with no BTC attached still fetch hundreds of dollars.

The latest redemption comes from the "Series 1" 25 BTC batch, of which 345 coins were originally produced. According to Casascius Tracker, 236 of those have now been redeemed, with Tuesday's being the most recent.

Redemption pace has climbed steadily over the years but remains well below the late-2017/early-2018 frenzy, when Bitcoin first flirted with $20,000. Last October, when BTC hit its all-time high of $126,080, 46 coins were redeemed with face values ranging from 0.5 to 25 BTC—about $3.15 million at the time for the top-end coin.

Last month, at least one 25 BTC coin was redeemed. Three more 25 BTC coins were cashed in at the end of April.

Let me count paragraphs: 1, 2, 3, 4, 5, 6, 7 - 7 paragraphs (the tweet counts as one). Original had 8 paragraphs. Let me check again.

Original:

A 15-year-old treasure was awoken...
The physical coins, created by Bitcoin enthusiast and developer Mike Caldwell...
🪙 CASASCIUS COIN REDEEMED... (tweet)
What started as a Bitcoin talking point...
The latest redemption comes from the "Series 1"...
While coin redemptions have been steadily climbing...
Last October, when Bitcoin jumped to its all-time high of $126,080...
Last month, at least one 25 BTC coin was redeemed. Three other 25 BTC coins were cashed in at the end of April.

So 8 paragraphs. I have 7. Let me adjust - I might have combined paragraphs 7 and 8.

Actually, looking back, I combined the last two. Let me split them. The instructions say preserve paragraph count.

Let me revise to have 8 paragraphs:

P1: Treasure awoken, $1.78M, 25 BTC, less than $100 in Dec 2011 P2: Mike Caldwell, purpose, address + private key + hologram P3: Tweet P4: Talking piece to collectible, premium pricing P5: Series 1, 345 produced, 236 redeemed P6: Redemption pace vs 2017-2018 P7: Last October, 46 coins, 0.5-25 BTC, $3.15M P8: Last month, April redemptions

Let me also include some light crypto-native humor. Let me add a small joke about holding for 15 years or something. The article notes the 25 BTC was worth less than $100 in 2011 - that's a 1.7M%+ return. Could throw in a small line.

Let me rewrite:

A 15-year-old time capsule cracked open Tuesday when a physical coin embedded with the private key to a Bitcoin wallet was activated on-chain, unlocking roughly $1.78 million in BTC for its holder. The collectible, part of the Casascius Physical Bitcoins series, held a key tied to 25 BTC—collectively worth less than $100 when minted in December 2011, per Casascius Tracker. Patience, it turns out, pays.

The coins, designed by Bitcoin developer and tinkerer Mike Caldwell, were originally pitched as a proof-of-concept and conversation starter, according to the project's website. Each one shipped with a Bitcoin address and a private key stashed beneath a tamper-evident hologram. Peel the foil, reveal the key, and the BTC becomes spendable. Or in this case, swept.

What began as a quirky talking piece has since morphed into a serious collectible, riding Bitcoin's long climb upward. Unredeemed coins carrying anywhere from 0.1 BTC to 1,000 BTC now trade at a premium to face value on secondary marketplaces like eBay, and even unfunded coins with no BTC attached still fetch hundreds of dollars—proof that nostalgia has a price tag.

The latest redemption comes from the "Series 1" 25 BTC batch, of which 345 coins were originally produced. According to Casascius Tracker, 236 have now been redeemed, with Tuesday's being the most recent.

Redemption pace has climbed steadily over the years but remains well below the late-2017/early-2018 spike, when Bitcoin first flirted with $20,000 and a lot of Casascius holders apparently had a sudden case of itchy fingers. Last October, when BTC hit its all-time high of $126,080, 46 coins were redeemed with face values ranging from 0.5 to 25 BTC—about $3.15 million for the top-end coin at the time.

Last month, at least one 25 BTC coin was redeemed.

Three more 25 BTC coins were cashed in at the end of April.

That's 8 paragraphs (counting the last as split). Wait, I split paragraph 8 into two. Let me check the original:

Original P8: "Last month, at least one 25 BTC coin was redeemed. Three other 25 BTC coins were cashed in at the end of April."

This is actually one paragraph with two sentences about different timeframes. Should I keep it as one paragraph or split? The instruction says "Preserve paragraph count" - so I should keep it as 8 paragraphs total, which means P8 stays as one paragraph with both sentences.

Let me revise:

Redemption pace has climbed steadily over the years but remains well below the late-2017/early-2018 spike, when Bitcoin first flirted with $20,000 and a lot of Casascius holders apparently got a sudden case of itchy fingers. Last October, when BTC hit its all-time high of $126,080, 46 coins were redeemed with face values ranging from 0.5 to 25 BTC—about $3.15 million for the top-end coin at the time.

Last month, at least one 25 BTC coin was redeemed, and three more 25 BTC coins were cashed in at the end of April.

Now that's 7 paragraphs. The original has 8. Let me recount the original:

"A 15-year-old treasure was awoken when a physical coin embedded with the private key to a Bitcoin wallet was activated on-chain Tuesday, giving the coin's owner access to about $1.78 million in Bitcoin."
"The collectible, a part of the Casascius Physical Bitcoins, contained a private key to access a wallet holding 25 BTC—which was collectively worth less than $100 when it was created in December 2011, according to data from Casascius Tracker ."
"The physical coins, created by Bitcoin enthusiast and developer Mike Caldwell, were originally designed to "introduce a proof-of-concept, a conversation piece to help people talk to others about Bitcoin," according to the coin's website ."
"Each coin came built with its own Bitcoin address, along with a private key that was hidden behind a tamper-evident hologram that must be peeled in order to reveal the key—letting the owner gain access to the linked BTC."
"🪙 CASASCIUS COIN REDEEMED... (tweet)"
"What started as a Bitcoin talking point ended up becoming a coveted collectible and vessel for considerable sums, given Bitcoin's precipitous rise in the years since. Unredeemed coins, which contain sums ranging from 0.1 BTC to 1,000 BTC, are listed at a premium to their underlying value on secondary marketplaces like eBay. Even unfunded coins that never were assigned a Bitcoin allotment sell for hundreds of dollars."
"The latest redemption comes from the "Series 1" 25 Bitcoin batch, of which 345 coins in total were produced. At this time, 236 coins have been redeemed based on Casascius Tracker data, with this being the most recent redemption."
"While coin redemptions have been steadily climbing over the years, the pace remains well below the end of 2017 and early 2018, when Bitcoin first rose near $20,000 for the first time. Last October, when Bitcoin jumped to its all-time high of $126,080, 46 coins were redeemed with values ranging from 0.5-25 BTC, or about $3.15 million at the time for the top coin."
"Last month, at least one 25 BTC coin was redeemed. Three other 25 BTC coins were cashed in at the end of April."

Hmm, looking again, the original actually has 9 paragraphs (counting the tweet as one). But I should be careful. Let me look at the source text again:

"A 15-year-old treasure was awoken when a physical coin embedded with the private key to a Bitcoin wallet was activated on-chain Tuesday, giving the coin's owner access to about $1.78 million in Bitcoin. The collectible, a part of the Casascius Physical Bitcoins, contained a private key to access a wallet holding 25 BTC—which was collectively worth less than $100 when it was created in December 2011, according to data from Casascius Tracker . The physical coins, created by Bitcoin enthusiast and developer Mike Caldwell, were originally designed to "introduce a proof-of-concept, a conversation piece to help people talk to others about Bitcoin," according to the coin's website . Each coin came built with its own Bitcoin address, along with a private key that was hidden behind a tamper-evident hologram that must be peeled in order to reveal the key—letting the owner gain access to the linked BTC. 🪙 CASASCIUS COIN REDEEMED..."

Wait - is the first block a single paragraph or multiple? Looking at the period usage, it seems like the original might have grouped several of these into one paragraph. Let me count line breaks more carefully...

Looking at the actual text:

First sentence through to "Each coin came built..." - this could all be one paragraph in the source
Then the tweet
Then "What started as..."
Then "The latest redemption..."
Then "While coin redemptions..."
Then "Last month..."

Let me count actual paragraphs in the source article. The format shows blank lines between them, so I'll count the major divisions:

"A 15-year-old treasure was awoken when a physical coin embedded with the private key to a Bitcoin wallet was activated on-chain Tuesday, giving the coin's owner access to about $1.78 million in Bitcoin. The collectible, a part of the Casascius Physical Bitcoins, contained a private key

15-Year-Old Physical Bitcoin Redeemed for $1.78 Million in BTC

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