"proof of work"

#13281124

6 February 2026

The cryptocurrency chart BTC - U.S. Dollar is displayed on a mobile screen with a Bitcoin chart in the background in this photo illustration in Brussels, Belgium, on February 6, 2026.

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#13281125

6 February 2026

The cryptocurrency chart BTC - U.S. Dollar is displayed on a mobile screen with the Bitcoin logo visible in the background in this photo illustration in Brussels, Belgium, on February 6, 2026.

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#13281126

6 February 2026

The cryptocurrency chart BTC - U.S. Dollar is displayed on a mobile screen with a Bitcoin visible in the background in this photo illustration in Brussels, Belgium, on February 6, 2026.

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#13281127

6 February 2026

The cryptocurrency chart BTC - U.S. Dollar is displayed on a mobile screen with a Bitcoin visible in the background in this photo illustration in Brussels, Belgium, on February 6, 2026.

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#13281128

6 February 2026

Tokens representing Bitcoin are placed on a mobile screen showing a declining cryptocurrency chart BTC - U.S. Dollar, seen in this photo illustration in Brussels, Belgium, on February 6, 2026.

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#13281129

6 February 2026

Tokens representing Bitcoin are placed on a mobile screen showing a declining cryptocurrency chart BTC - U.S. Dollar, seen in this photo illustration in Brussels, Belgium, on February 6, 2026.

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#13281130

6 February 2026

Tokens representing Bitcoin are placed on a mobile screen showing a declining cryptocurrency chart BTC - U.S. Dollar, seen in this photo illustration in Brussels, Belgium, on February 6, 2026.

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#13281131

6 February 2026

Tokens representing Bitcoin are placed on a mobile screen showing a declining cryptocurrency chart BTC - U.S. Dollar, seen in this photo illustration in Brussels, Belgium, on February 6, 2026.

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#13281132

6 February 2026

The cryptocurrency chart BTC - U.S. Dollar is displayed on a mobile screen with a Bitcoin visible in the background in this photo illustration in Brussels, Belgium, on February 6, 2026.

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#13187896

12 January 2026

A worker participates in the removal of the three-ton copper observatory dome from the Round Tower in Copenhagen, Denmark, on January 12, 2026. After nearly 60 years of exposure to wind and weather, the observatory's copper roof begins to leak, making restoration of the dome necessary. The aim is to future-proof the observatory and the tower itself, ensuring that King Christian IV's historic ''Star Castle'' can be preserved and experienced by future generations.

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#12454511

8 June 2025

Austrian police officers conduct a visible patrol with multiple police vans in the pedestrian area around St. Stephen's Cathedral in Vienna, Austria, on June 7, 2025. The officers monitor the area amidst light rain and high tourist foot traffic in the historic city center.

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#12454512

8 June 2025

Austrian police officers conduct a visible patrol with multiple police vans in the pedestrian area around St. Stephen's Cathedral in Vienna, Austria, on June 7, 2025. The officers monitor the area amidst light rain and high tourist foot traffic in the historic city center.

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#12454513

8 June 2025

Austrian police officers conduct a visible patrol with multiple police vans in the pedestrian area around St. Stephen's Cathedral in Vienna, Austria, on June 7, 2025. The officers monitor the area amidst light rain and high tourist foot traffic in the historic city center.

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#12454514

8 June 2025

Austrian police officers conduct a visible patrol with multiple police vans in the pedestrian area around St. Stephen's Cathedral in Vienna, Austria, on June 7, 2025. The officers monitor the area amidst light rain and high tourist foot traffic in the historic city center.

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#12434123

1 June 2025

Members of the ethnic Newa community don traditional dress and perform a ritualistic dance in front of the Rato Machhindranath chariot ahead of the Bhoto Jatra procession in Lalitpur, Nepal, on June 1, 2025. The chariot procession of Rato Machhindranath is observed for at least a month to four months and ends with the showing of the 'Bhoto,' expecting the rightful owner to come and claim it. Historians claim that the chariot procession of Machindranath starts around 1,300 years ago. As the legend goes, shortly after the procession starts, the queen of the serpent king Karkotak develops an eye ailment. While searching for a healer, Karkotak mistakes a farmer working in the fields for a physician and brings him to Taudaha, a wetland on the outskirts of Kathmandu. Frightened, the farmer prays to Machhindranath and rubs his hands on the soil to make an herbal paste. He offers it to Karkotak as medicine, and the paste cures the queen's eyes. Grateful, Karkotak rewards the farmer with a jewel-studded vest (bhoto) and returns him to the human world. The farmer begins wearing the bhoto while working in his fields. One day, a ghost in human form steals the vest. The farmer searches everywhere but cannot find it. Later, while attending the Machhindranath chariot festival, he sees the ghost wearing the same vest and claims it as his. When the ghost refuses to return it, a dispute breaks out. People summon Karkotak to resolve the conflict. In the end, because neither party can prove ownership, they entrust the bhoto to Machhindranath. Since then, devotees follow the tradition of displaying the bhoto after the chariot procession, hoping that someone with valid proof of ownership will come forward. Each year, they display the sacred vest on an auspicious date. According to legend, no one succeeds in proving ownership of the bhoto so far.

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#12434127

1 June 2025

Members of the ethnic Newa community don traditional dress and perform a ritualistic dance in front of the Rato Machhindranath chariot ahead of the Bhoto Jatra procession in Lalitpur, Nepal, on June 1, 2025. The chariot procession of Rato Machhindranath is observed for at least a month to four months and ends with the showing of the 'Bhoto,' expecting the rightful owner to come and claim it. Historians claim that the chariot procession of Machindranath starts around 1,300 years ago. As the legend goes, shortly after the procession starts, the queen of the serpent king Karkotak develops an eye ailment. While searching for a healer, Karkotak mistakes a farmer working in the fields for a physician and brings him to Taudaha, a wetland on the outskirts of Kathmandu. Frightened, the farmer prays to Machhindranath and rubs his hands on the soil to make an herbal paste. He offers it to Karkotak as medicine, and the paste cures the queen's eyes. Grateful, Karkotak rewards the farmer with a jewel-studded vest (bhoto) and returns him to the human world. The farmer begins wearing the bhoto while working in his fields. One day, a ghost in human form steals the vest. The farmer searches everywhere but cannot find it. Later, while attending the Machhindranath chariot festival, he sees the ghost wearing the same vest and claims it as his. When the ghost refuses to return it, a dispute breaks out. People summon Karkotak to resolve the conflict. In the end, because neither party can prove ownership, they entrust the bhoto to Machhindranath. Since then, devotees follow the tradition of displaying the bhoto after the chariot procession, hoping that someone with valid proof of ownership will come forward. Each year, they display the sacred vest on an auspicious date. According to legend, no one succeeds in proving ownership of the bhoto so far.

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