Server And Remote URL Analysis

Focused report for the previously provided repositories: photon-android-wallet and photon-web-wallet.

This page answers one narrow question: which servers, remote URLs, explorers, proxies, and canister endpoints the wallets are using by default, and which of them are user-overridable.

Android wallet Web wallet Hardcoded defaults Runtime overrides

Executive Summary

Android Wallet

Primary Bitcoin server dependency is Electrum.
Primary RGB transport endpoint is Iris proxy.
Defaults are hardcoded to iriswallet.com infrastructure.
Electrum URL and RGB proxy endpoint are user-overridable in settings.
Testnet faucet support points to coinfaucet.eu.

Web Wallet

Uses a mix of local wallet logic, public blockchain APIs, RGB proxy JSON-RPC, and ICP canisters.
Public Bitcoin data comes mainly from mempool.space and sometimes blockstream.info.
RGB proxy default is a hardcoded raw IP: http://89.117.52.115:3000/json-rpc.
ICP calls go to https://ic0.app with network-specific canister IDs.
Electrum server is stored in settings/UI, but core Bitcoin reads are not actually driven by Electrum in the code shown.

Android Wallet Servers

Purpose	Default / Hardcoded Value	Where Used	Override?
Signet Electrum	`ssl://electrum.iriswallet.com:50033`	BTC + RGB online wallet connection	Yes, via settings
Testnet Electrum	`ssl://electrum.iriswallet.com:50013`	BTC + RGB online wallet connection	Yes, via settings
Mainnet Electrum	`ssl://electrum.iriswallet.com:50003`	BTC + RGB online wallet connection	Yes, via settings
RGB transport endpoint	`rpcs://proxy.iriswallet.com/0.2/json-rpc`	RGB receive/send transport endpoints	Yes, via settings
Asset certification server	`https://photonlabs.com`	Asset certification API	No in code shown
Testnet faucet	`https://coinfaucet.eu/en/`	Bitcoin faucet API base URL for testnet builds	No in code shown
Signet help faucets	`https://signetfaucet.com/`, `https://alt.signetfaucet.com/`	Help links only	No
Testnet help faucet list	`https://faucet-list.com/testnet-faucets/bitcoin`	Help link only	No
Signet explorer	`https://mempool.space/signet/tx/`	Explorer tx links	No
Testnet explorer	`https://mempool.space/testnet/tx/`	Explorer tx links	No
Mainnet explorer	`https://mempool.space/tx/`	Explorer tx links	No
Privacy policy	`https://photonlabs.com/privacy_policy.html`	Static legal URL	No
Terms URL	`https://photonlabs.com/testnet/terms_of_service.html`, `https://photonlabs.com/mainnet/terms_of_service.html`	Static legal URL	No

Android implementation detail: the actual wallet online session is created by RgbRepository.goOnline(electrumURL). That means Electrum is the critical network dependency for wallet sync, balance, transfers, and RGB operations. The proxy transport endpoint is separately attached to RGB receive/send flows.

Android Wallet Notes

SharedPreferencesManager.electrumURL defaults to the network-specific Iris Electrum endpoint and can be changed by the user.
SharedPreferencesManager.proxyTransportEndpoint defaults to the Iris RGB proxy endpoint and can be changed by the user.
AppContainer.proxyURL converts the stored transport string into https://... or http://... form for connectivity checks.
RGB faucet API support exists structurally, but rgbFaucetURLS is empty in the current app container for all networks, so no RGB faucet base URL is actively configured by default.
The Bitcoin faucet endpoint is only active for the Testnet flavor; Signet and Mainnet do not configure a faucet base URL.

Web Wallet Servers

Purpose	Default / Hardcoded Value	Where Used	Override?
Electrum server UI default	`ssl://electrum.iriswallet.com:50013`	App settings state in UI	Yes, user-editable
RGB proxy default	`http://89.117.52.115:3000/json-rpc`	RGB JSON-RPC fetches	Yes, from storage/UI
Mainnet mempool API	`https://mempool.space/api`	Fees, address history, UTXOs, broadcast	No in code shown
Testnet3 mempool API	`https://mempool.space/testnet/api`	Fees, address history, UTXOs, broadcast	No in code shown
Testnet4 mempool API	`https://mempool.space/testnet4/api`	Fees, address history, UTXOs, broadcast	No in code shown
Regtest fallback API	`https://blockstream.info/testnet/api`	Address history, UTXOs, broadcast when network is labeled regtest	No in code shown
ICP gateway	`https://ic0.app`	All Dfinity actor/canister calls	No in code shown
Mainnet wallet canister	`oazba-2qaaa-aaaau-ac66a-cai`	Storage fallback for wallet canister	Yes, via storage
Testnet wallet canister	`ja2nc-uiaaa-aaaaf-qc4la-cai`	Storage fallback for testnet wallet canister	Yes, via storage
Mainnet ckBTC ledger	`mxzaz-hqaaa-aaaar-qaada-cai`	ckBTC approval flow	No
Testnet ckTESTBTC ledger	`mc6ru-gyaaa-aaaar-qaaaq-cai`	ckBTC approval flow	No
Regtest ckTESTBTC ledger	`mc6ru-gyaaa-aaaar-qaaaq-cai`	ckBTC approval flow	No
Mainnet ckBTC minter	`mqygn-kiaaa-aaaar-qaadq-cai`	Lightning/ckBTC address + withdrawal flow	No
Testnet ckTESTBTC minter	`ml52i-qqaaa-aaaar-qaaba-cai`	Lightning/ckBTC address + withdrawal flow	No
Regtest ckTESTBTC minter	`ml52i-qqaaa-aaaar-qaaba-cai`	Lightning/ckBTC address + withdrawal flow	No

Web Wallet Notes

The web wallet stores electrumServer and rgbProxy in storage/UI, but the Bitcoin read/write paths shown rely mainly on public HTTP APIs and ICP canister calls, not Electrum.
rgbProxy is the actual remote endpoint used by src/utils/rgb.ts for JSON-RPC requests such as server.info and allocation checks.
DEFAULT_MAINNET_CANISTER and DEFAULT_TESTNET_CANISTER in storage.ts are oazba-2qaaa-aaaau-ac66a-cai and ja2nc-uiaaa-aaaaf-qc4la-cai.
App.tsx separately defines UI defaults bkyz2-fmaaa-aaaaa-qaaaq-cai for both mainnet and testnet from env or fallback. That does not match storage.ts, so there is an internal inconsistency in the repo.
icp.ts maps both testnet and regtest to the same wallet canister and uses the same ckBTC canisters for Testnet and Regtest.
The repo’s regtest label is not true isolated regtest networking, because several code paths still call public testnet infrastructure.

Direct Answer

Android wallet server defaults: electrum.iriswallet.com for Electrum and proxy.iriswallet.com/0.2/json-rpc for RGB transport. It also uses photonlabs.com for certification/legal URLs and coinfaucet.eu for testnet faucet requests.

Web wallet server defaults: 89.117.52.115:3000/json-rpc for RGB proxy, mempool.space and blockstream.info for blockchain HTTP APIs, and ic0.app for Dfinity/ICP canister access. The wallet canister and ckBTC-related remotes are identified by canister IDs rather than normal hostnames.

Important Inconsistencies

Repository	Issue	Impact
Android wallet	No regtest network variant is defined.	It cannot natively match a regtest backend without code changes and library support.
Web wallet	`electrumServer` exists in UI/storage, but main chain interactions do not primarily use Electrum in the current code.	The UI suggests one network path, while actual reads/writes use other remotes.
Web wallet	`App.tsx` canister fallback IDs differ from `storage.ts` canister fallback IDs.	There is ambiguity about which canister is the intended default.
Web wallet	`regtest` routes to public testnet APIs in some code paths.	That is not a true regtest deployment model.