I want to know if I really understood. The unified address includes all existing pools (transparent, spiling, uchard), but there is only one unified address, uchard. But I can use each address separately, being able to use the unified uchard address, the spiling Z address and the transparent T address, so that I do not need to use the main unified address (knowing that the main unified is like an automated address that transfers the coins to the corresponding pool of the origin of the coins. For this reason, I would be able to convert Spiling to Uchard by transferring from the Z address to the U Uchard address (without being the main U). Am I correct? Is there no problem in transferring coins from a U Uchard address to another wallet with a U Uchard address without needing to send to the main U address?
You’re pretty much on point with Zcash unified addresses, but let me clear up a couple things with a chill multi-pocket wallet analogy. A Unified Address (UA) is like one wallet label that packs addresses for different pools—transparent (T, like cash everyone can see), sapling (Z, like a secret stash), and orchard (not “uchard,” that’s a mix-up)—into a single address to make things smooth across Zcash pools. You can share this UA to get funds, and your wallet sorts the coins into the right pool (like sapling or orchard) without you messing with multiple addresses. You nailed it that you can use T, Z, or orchard addresses on their own for specific transfers, like grabbing cash from one pocket. Also, no problem sending coins straight from one UA to another wallet’s UA. The UA is like a universal charger, making everything work together and supporting cool stuff like auto-shielding (if your wallet’s got it), which moves transparent funds to a shielded pool like orchard for extra privacy. Just a heads-up: a UA needs at least a sapling or orchard address, so only shielded wallets can make one, and there’s no need to transfer between “orchard” UA or “main” UA—your wallet takes care of that.
At this point, if you want to recommend Zcash to someone, just tell them to download Zashi.
Leave it to Zashi
Overall functionality with UA’s is determined by what wallet you use but anyone can see the “receiver” addresses of any UA by pasting it into a supported block explorer or manually with a full node. The wallet must select one of the receivers to send to for a tx, it does not send to the multi-addressed UA itself and so it actually needs that same ability to get the receivers and pick one.
It’s nice to be able to see it like that for yourself because then you realize it’s really not that complicated.
Yeah it does get tricky like when then they say a single Orchard address is “itself” a UA representation of a single orchard receiver. The address base encoding type is the same but there is no actual unification of other addresses into a single representation so yeah, thats not confusing at all! Normal UAs do require a shielded receiver but not TEX addys which again is an encoding of a single (transparent) address. No unification but we also don’t call theses one UA’s either. However, the same rules apply and the wallet must extract the receiver and send to it (texes use a different method call for that than for normal UAs, however).
Again, functionality is determined by the wallet but the user (as described) has the ability to do this (pick the receiver) themselves regardless.
Is the main U address just a unified address? The Uuchard address, despite starting with U, is not a unified address and the U represents Uchard and not unified?
U stands for Unified, there is no such thing as “Uchard”. Addresses that start with “u” are unified addresses.
An Unified Address is basically a collection of addresses between transparent, Sapling and Orchard.
Your confusion might be originated from the fact that Orchard addresses only exist inside Unified Addresses. There is no “raw” Orchard addresses like there are “raw” transparent addresses (starting with “t”) or “raw” Sapling addresses (starting with “zs”)