how to send an ERTP payment to an agoric / cosmos address / account

[dckc]

We went over this in today's office hours (notes, including recording), prompted by a question from @thisispalash.

namesByAddress is a name hub where each provisioned account gets an entry. Their entry is a namehub of anything the owner cares to publish, in addition to a depositFacet entry initialized by the provisioning process.

So given an address and a payment, to send the payment to the address...

const addr = "agoric1ldmtatp24qlllgxmrsjzcpe20fvlkp448zcuce" // for example
const pmt = await purse1.withdraw(AmountMath.make(someBrand, 100n)) // for example
const destDepositFacet = E(home.namesByAddress).lookup(addr, 'depositFacet');
E(destDepositFacet).receive(pmt);

to get your address from home:

const myAddr = await E(home.myAddressNameAdmin).getMyAddress();

Neither namesByAddress nor myAddressNameAdmin nor even the NameHub API seems to be documented.

cc @michaelfig @Tyrosine22