剑桥大学：2017年全球加密货币研究报告（114页）.pdf

1、With the support of: Dr Garrick Hileman a significant geographical dispersion of exchanges is observed. 52% of small exchanges hold a formal government license compared to only 35% of large exchanges. On average, security headcount corresponds to 13% of total employees and 17% of budget is spent on

2、security. WALLETS Between 5.8 million and 11.5 million wallets are estimated to be currently active. The lines between wallets and exchanges are increasingly blurred: 52% of wallets surveyed provide an integrated currency exchange feature, of which 80% offer a national-to-cryptocurrency exchange ser

3、vice. In contrast with exchanges, the majority of wallets do not control access to user keys. PAYMENTS While 79% of payment companies have existing relationships with banking institutions and payment networks, the difficulty of obtaining and maintaining these relationships is cited as this sectors b

4、iggest challenge. On average, national-to-cryptocurrency payments constitute two-thirds of total payment company transaction volume, whereas national-to-national currency transfers and cryptocurrency-to-cryptocurrency payments account for 27% and 6%, respectively. MINING 70% of large miners rate the

5、ir influence on protocol development as high or very high, compared to 51% of small miners. The cryptocurrency mining map shows that publicly known mining facilities are geographically dispersed, but a significant concentration can be observed in certain Chinese provinces. Executive Summary 11 Globa

6、l Cryptocurrency Benchmarking Study METHODOLOGY The Cambridge Centre for Alternative Finance carried out four online surveys from September 2016 to January 2017 via secure web-based questionnaires. Each survey was directed at organizations and individuals operating in a specific sector of the crypto