Suggestions for Sia URI click handler

[in-cred-u-lous]

I'm thinking about making a Chrome extension my next project. Functionalities would include:

• send/receive funds with local wallet
• download .sia files
• some info, like market data, wallet balances, local sync status etc

I think first establishing an agreed standard to URIs. Links like these will forward to payment address to a Bitcoin wallet that has registered itself as a click-handler for bitcoin: links:

bitcoin:1EuuVdEUe6zPCdpFW5HWGPWBRatYEJ7A5P

What I suggest is these URIs:

Open wallet and send funds:
siacoin:90b290c56683b60ad167efed1bd8ff96afa15ecb9fe2957c10c7c24cc91b2217851fdb37cf37

Siafund transfers are probably not common enough to bother supporting.

Download a .sia file:
siafile:U2lhIFNoYXJlZCBGaWxlAwAAAAAAAAAwLjQBAAAAAAAAAB-LCAAACW6IAv_SZIAARz-XoFAFXQXXipKiRAX_opTMvMSiSoXo8ozElMS00kK95PzcWL3cAmOB4Cywhmcl-5dWf-HN150snPfFW7nqj3f3-o-dAVZlLz5tSp-yffOT__ZgdVsYIRa8-FfPBKKhXAYeKB2UmpqiG5yfk5-bn8cEFeNAowMmaRs-OfnnG9-ZZJ3iuH-b4jq1dTxLJRKuLJGV_fFfvVwYqs7I0FjP3FjP0NhCz8jEwMrS0sIIZh0MMKHxj6ZB6JTFE3iXu2p7SWvHHMouUi_rluZ9dcr3vr . . . (abbr.)

Any better / other suggestions for URIs and functionality a Chrome extension could feature?