stacker news ~bitcoin:
Ledger announces support for two NIST post quantum standards
Ledger announces support for two NIST post quantum standards
X (formerly Twitter)
Charles Guillemet (@P3b7_) on X
⚛️ ML-KEM and ML-DSA are now in the Ledger SDK, in Rust and in C. These are the two NIST standards that matter today: FIPS 203 for key encapsulation, FIPS 204 for signatures. Running them on a secure element with a trusted display is the point. Post-quantum…
Today in Bitcoin History / @daily_btc_lore:
R to @daily_btc_lore: 2/9 - Uber launched in Buenos Aires in April 2016 without a license. The city declared it illegal. Rather than a physical confrontation, Buenos Aires went for the payment system: order Argentine banks and card issuers to block all Uber transactions.
R to @daily_btc_lore: 2/9 - Uber launched in Buenos Aires in April 2016 without a license. The city declared it illegal. Rather than a physical confrontation, Buenos Aires went for the payment system: order Argentine banks and card issuers to block all Uber transactions.
Today in Bitcoin History / @daily_btc_lore:
R to @daily_btc_lore: 3/9 - Domestically-issued Visa and MasterCard stopped working for Uber in Argentina, but only for Uber. Uber's response: direct users to foreign prepaid debit cards. Entropay, EcoPayz, Payoneer, ZapZap. All issued outside Argentina, invisible to the domestic block.
R to @daily_btc_lore: 3/9 - Domestically-issued Visa and MasterCard stopped working for Uber in Argentina, but only for Uber. Uber's response: direct users to foreign prepaid debit cards. Entropay, EcoPayz, Payoneer, ZapZap. All issued outside Argentina, invisible to the domestic block.
Today in Bitcoin History / @daily_btc_lore:
R to @daily_btc_lore: 4/9 - Xapo, a Gibraltar-based Bitcoin wallet and debit card service, became the primary Bitcoin-backed workaround. Argentina's Bitcoin community found that Xapo's card, issued outside Argentine banking, worked for Uber when local cards could not.
https://cashessentials.org/are-argentinians-paying-for-uber-rides-with-bitcoins
R to @daily_btc_lore: 4/9 - Xapo, a Gibraltar-based Bitcoin wallet and debit card service, became the primary Bitcoin-backed workaround. Argentina's Bitcoin community found that Xapo's card, issued outside Argentine banking, worked for Uber when local cards could not.
https://cashessentials.org/are-argentinians-paying-for-uber-rides-with-bitcoins
Today in Bitcoin History / @daily_btc_lore:
R to @daily_btc_lore: 5/9 - The mechanism: sell BTC for USD, load the dollars onto the Xapo card, pay for Uber via Visa rails. Bitcoin never touched the transaction directly. But a Bitcoin-backed card issued in Gibraltar was outside the scope of the Argentine banking block.
R to @daily_btc_lore: 5/9 - The mechanism: sell BTC for USD, load the dollars onto the Xapo card, pay for Uber via Visa rails. Bitcoin never touched the transaction directly. But a Bitcoin-backed card issued in Gibraltar was outside the scope of the Argentine banking block.
Today in Bitcoin History / @daily_btc_lore:
R to @daily_btc_lore: 6/9 - Workarounds multiplied. Some Buenos Aires drivers accepted cash from passengers and settled with Uber on personal IOUs. The city targeted the payment system; Uber routed around every blocked method through foreign cards, Bitcoin-backed cards, and cash.
R to @daily_btc_lore: 6/9 - Workarounds multiplied. Some Buenos Aires drivers accepted cash from passengers and settled with Uber on personal IOUs. The city targeted the payment system; Uber routed around every blocked method through foreign cards, Bitcoin-backed cards, and cash.
Today in Bitcoin History / @daily_btc_lore:
R to @daily_btc_lore: 7/9 - Headlines called it "Uber accepts Bitcoin." That was wrong. Uber directed users to foreign prepaid cards generally; Xapo was the Bitcoin community's workaround of choice. The accurate story: Bitcoin-backed cards adapted censorship-resistant money to existing Visa rails.
R to @daily_btc_lore: 7/9 - Headlines called it "Uber accepts Bitcoin." That was wrong. Uber directed users to foreign prepaid cards generally; Xapo was the Bitcoin community's workaround of choice. The accurate story: Bitcoin-backed cards adapted censorship-resistant money to existing Visa rails.
Today in Bitcoin History / @daily_btc_lore:
R to @daily_btc_lore: 8/9 - In December 2017, Visa suspended Wave Crest Holdings, the card issuer behind Xapo and most Bitcoin debit cards globally. Cards were cut off in the weeks that followed. The workaround that circumvented Buenos Aires' banking block was itself killed by the card network.
R to @daily_btc_lore: 8/9 - In December 2017, Visa suspended Wave Crest Holdings, the card issuer behind Xapo and most Bitcoin debit cards globally. Cards were cut off in the weeks that followed. The workaround that circumvented Buenos Aires' banking block was itself killed by the card network.
Today in Bitcoin History / @daily_btc_lore:
R to @daily_btc_lore: 9/9 - The episode showed that Bitcoin could route around censorship in the traditional financial system, not directly but through infrastructure built on top of it. When Buenos Aires blocked Uber, Bitcoin holders had an off-ramp the city couldn't reach.
R to @daily_btc_lore: 9/9 - The episode showed that Bitcoin could route around censorship in the traditional financial system, not directly but through infrastructure built on top of it. When Buenos Aires blocked Uber, Bitcoin holders had an off-ramp the city couldn't reach.
Bitcoin News / @BitcoinNewsCom:
ERIC TRUMP’S AMERICAN BITCOIN BOOSTS HOLDINGS TO 8,000+ BTC
Eric Trump’s American Bitcoin has increased its Bitcoin treasury by 500 BTC, bringing total holdings to more than 8,000 BTC.
Since its Nasdaq debut, the company says it has tripled both its Bitcoin reserve and its satoshis per share.
ERIC TRUMP’S AMERICAN BITCOIN BOOSTS HOLDINGS TO 8,000+ BTC
Eric Trump’s American Bitcoin has increased its Bitcoin treasury by 500 BTC, bringing total holdings to more than 8,000 BTC.
Since its Nasdaq debut, the company says it has tripled both its Bitcoin reserve and its satoshis per share.
Bitcoin News / @BitcoinNewsCom:
TRUMP: BITCOIN COULD BE ADDED TO ‘TRUMP ACCOUNTS’
President Trump said Bitcoin could eventually be included in the new government-backed Trump Accounts savings program, telling reporters “something could happen.”
Trump called himself a “big crypto guy,” saying the U.S. must lead China in digital assets.
The program launched July 4 with $1,000 seed deposits for more than 500,000 children.
TRUMP: BITCOIN COULD BE ADDED TO ‘TRUMP ACCOUNTS’
President Trump said Bitcoin could eventually be included in the new government-backed Trump Accounts savings program, telling reporters “something could happen.”
Trump called himself a “big crypto guy,” saying the U.S. must lead China in digital assets.
The program launched July 4 with $1,000 seed deposits for more than 500,000 children.
Delving Bitcoin - Latest posts:
State of the transaction privacy work in Bitcoin
State of the transaction privacy work in Bitcoin
Delving Bitcoin
State of the transaction privacy work in Bitcoin
Wouldn’t this require the custodian to first share the UTXO(s) they will use for the silent payment with Alice/Charlie so they can calculate the end destination address? This is the exact opposite of the claim you made multiple times:
El Salvador in English:
El Salvador to Host World Tourism Day 2026 for the First Time in History.
El Salvador to Host World Tourism Day 2026 for the First Time in History.
El Salvador in English
El Salvador to Host World Tourism Day 2026 for the First Time in History.
El Salvador will historically host World Tourism Day 2026, gathering global leaders to discuss sustainable tourism, artificial intelligence, and family-friendly strategies.