London based blockchain provenance startup Everledger has raised $20m in a Series A financing led by Tencent. loomberg Beta, Rakuten, Fidelity, Graphene Ventures and Vickers Venture Partners also took part in the round. The startup set out as a platform using blockchain to verify the authenticity of diamonds, and his since expanded to other areas where provenance and transparency are of key importance such as minerals, luxury goods wine and art.