Benzinga previews the week ahead in the global cryptocurrency markets. BitcoinBitcoin is hovering around the $51,380 mark, 1.5% down over the past seven days. Lambda Markets, a trading platform sees Bitcoin in a range between $50,000 and $53,000, saying “it’s going to take some work for bulls to get through” the resistance. Crypto chart analyst Ali Martinez has a similar outlook: EthereumEthereum (CRYPTO: ETH) has outperformed Bitcoin over the past week, notching a 5.9% gain to trade around $3,070. The week started with Lookonchain data showing that whale wallets are accumulating, having withd…