Seeking some types and values

[ChristopherA]

For BTCR audit trail, seeking (but not finding):

• chain (what chain is this on? bitcoin, testnet, or alt satoshi chains like lightcoin, zcash)
• blockHash (alternative to blockHeight)
• transactionIndex (aka index to transaction in block)

etc.

See an example of needs at https://github.com/WebOfTrustInfo/btcr-hackathon-2019/issues/9