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2. Hashcash - Wikipedia

   en.wikipedia.org/wiki/Hashcash

   Hashcash. Hashcash is a proof-of-work system used to limit email spam and denial-of-service attacks. Hashcash was proposed in 1997 by Adam Back [1] and described more formally in Back's 2002 paper "Hashcash - A Denial of Service Counter-Measure". [2] In Hashcash the client has to concatenate a random number with a string several times and hash ...

3. Back to the Future - Wikipedia

   en.wikipedia.org/wiki/Back_to_the_Future

   Back to the Future was a critical and commercial success, earning $381.1 million to become the highest-grossing film of 1985 worldwide. Critics praised the story, humorous elements, and the cast, particularly Fox, Lloyd, Thompson, and Glover. It received multiple award nominations and won an Academy Award, three Saturn Awards, and a Hugo Award.

4. ShopBack - Wikipedia

   en.wikipedia.org/wiki/ShopBack

   ShopBack is a cashback reward program [1] available across the Asia-Pacific (APAC). It allows online shoppers to receive a small percentage of their purchases on the platform, paid for through affiliate programs by the merchant. The platform also provides coupons, voucher codes, product comparison, QR code payment, [2] and most recently, buy ...

5. The 10 Best Cash-Back Credit Cards Available Now - AOL

   www.aol.com/finance/10-best-cash-back-credit...

   3% cash back on dining, including takeout, and at drugstores. 1.5% cash back on everything else. 5% cash back on travel purchased through Chase. 14.99% to 23.74%. 0% for 15 months. $0. Groceries ...

6. Back to Black - Wikipedia

   en.wikipedia.org/wiki/Back_to_Black

   Back to Black is the second and final studio album by English singer and songwriter Amy Winehouse, released on 27 October 2006 by Island Records.Winehouse predominantly based the album on her tumultuous relationship with then-ex-boyfriend and future husband Blake Fielder-Civil, who temporarily left her to pursue his previous ex-girlfriend.

7. Get up to 45% Cash Back With These 6 Apps - AOL

   www.aol.com/45-cash-back-6-apps-110026918.html

   GOBankingRates previously reported that the average offer is around 11 cents back per gallon of gas, 7% cash back on groceries and 10% on restaurants (dining in or direct ordering, not through ...