Define API

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• checkValueSent(tx, address, value)
• getValueSent(tx, address) (summing over outputs?)
• checkValueSentFrom(tx, address, value)
• getValueSentFrom(tx, address)

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@ethers: I'm open to ideas for useful function calls here.

[ethers]

Thanks, I'm not yet sure about the higher level apis, but meantime the primitives would be to get inputs and outputs. I looked around and saw some ideas here:
https://21.co/learn/21-lib-bitcoin/#parsing-a-transaction
https://blockchain.info/api/blockchain_api - see Single transaction

The other main libs don't seem to have higher level apis or have documentation about them:
https://github.com/bitpay/bitcore-lib
https://github.com/bitcoinjs/bitcoinjs-lib

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@iurimatias: trying to define a useful api here. Ideas welcome.