Investigate different javascript blockchain APIs and libraries

[nikolafon]

Possible good APIs and libraries would be:

• Bitcoin
  • https://bitcoinjs.org/ for creating key pairs (wallet address), verifying addresses and signing transactions
  • http://blockr.io/documentation/api to query blockchain, check for address balance and broadcast transactions. CORS is supported.
• Ethereum
  • https://github.com/ethereum/wiki/wiki/JavaScript-API for creating key pairs (wallet addresses), verifying addresses and signing transactions
  • https://etherscan.io/apis to query blockchain, check for address balance and broadcast transactions. CORS is supported.