Digital Currency Group, the cryptocurrency holding firm backed by a range of corporates including insurance provider New York Life and payment services firm Mastercard, has backed a $1.5m seed round for US-based blockchain platform Mediachain. The round also featured Union Square Ventures, Andreessen Horowitz, RRE Ventures, LDV Capital and assorted angel investors.

US-based blockchain technology developer Swirlds emerged from stealth mode on Monday with a seed round led by identity management platform Ping Identity. Swirlds has only demonstrated a proof-of-concept…