This can be a very sophisticated query. bcoin already has a built-in pockets that may do all of those operations for you. There’s a well-documented RESTful HTTP API you may learn via right here: http://bcoin.io/api-docs/ to get an thought of what is obtainable. You can too write your personal pockets software utilizing the bcoin object courses straight.
Very broadly nevertheless, here is some ideas that may curiosity you:
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Allow Handle indexing. This can be a function that’s not presently obtainable in bitcoind but (to this point I feel solely indexing by transaction ID is supported). That is switched on with
indexAddress: trueinbcoin.confor--index-addresson the command line. The handle index will allow you to request the transactions related to a particular handle: http://bcoin.io/api-docs/#get-tx-by-address -
It would be best to course of that transaction information and perhaps cross-check the UTXO set (so what has been spent already) with the API name http://bcoin.io/api-docs/#get-coin-by-outpoint
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Try the
MTXandCoinobjects to assemble a transaction from the UTXO you get well. We now have a number of guides on transaction dealing with, perhaps learn via this: http://bcoin.io/guides/working-with-txs.html -
Signing transactions with personal keys: I am unsure how your software will work nevertheless it sounds just like the customers must signal the TX themselves?
I recomend you learn via the bcoin API docs and the guides (and naturally, the codebase!). And simply give attention to the default pockets course of for coin choice, transaction composition, signing, and personal key dealing with.
