Before buying physical gold you have to do a lot research the reputation of the jewelry store, the owners, the origin, the security of the region. Buy a good safe. And trust in the people that you live with. If it's a very big amount, is not good to leave everything in one place, one part leave in bank safe deposit to diversify with a professional specialized in custody area. Documentations, invoices and insurance policies. Be careful to keep in a safe place separated from the gold. Much work, Bitcoin is way more simple.

You tend to forget that gold is a physical asset while Bitcoin happens to be digital, and by virtue of gold being a physical asset that requires a physical verification, that alone makes it hard to be able to verify efficiently if you are not an expert in verifying golds, unlike Bitcoin which happens to be a digital currency and asset. And by virtue of it been a digital asset, it made it very easy and possible for anyone to verify if it's authentic or not. So indeed, Bitcoin is the only high value assets that can easily be verified at all times without the need for expensive equipments.

Verifying gold is now easier than it used to be, because gold in circulation usually has a serial number that can be used to check its authenticity, or stores have XRF gold testers that people can use to verify their gold. If you buy it directly from a reputable and licensed store, it's safer and more reliable than buying from a regular store.

However, if we compare it to Bitcoin, it's clearly very different, because in those processes, you still rely on a third party to verify its authenticity. Whereas with Bitcoin, you don't need a third party or go through any hassle to verify your Bitcoin, since you can easily verify it on the blockchain.

Bitcoin's digital cryptographic verification makes it unique and distinct from gold or any other high value asset for that matter because Bitcoin for one is a ledger and anyone with a basic computing hardware can from their comfort zone, verify its cryptographic signature from anywhere in the world.

The process of buying gold is quite stressful looking at the steps you just mentioned that varies from looking for a reputable seller is highly important then knowing the type of gold you want to buy is necessary for everyone intending to buy gold. Payment is to confirm how legit the gold is before paying any amount no matter how small the money Is.
Bitcoin is different from every other currencies out there.

There are some Fulani and Hausa tribe men in my country who identify Gold easily, they are experts in doing that without even using instruments, they get to identify it by glancing at the gold and figure it out.

The disadvantage is that, only expert knows it and most newbies can't identify it unlike Bitcoin.

There are newbies too who don't know how to check the authenticity of Bitcoin through blockchain explorers, so they get confused and scammed on fake investment sites.

In the case of PAXG and XAUT, the verification should happen to the reserve asset not the token itself, token exist in the blockchain but the real value is on the reserve not the token and the reserve is unfortunately only audited by independent third party every month for PAXG and quarterly for XAUT which might look good for anyone coming from tradfi but crypto enthusiast usually prefer real time verification, it's inferior to bitcoin where blockchain is real time verification.

You don't know if asset is truly there between the gap of previous attestation to the most recent one when you hold tokenized gold but with bitcoin you only need to look up to the blockchain and easily verify that you are receiving the real bitcoin, therefore the easiest to verify.

Pianos. You only have to play it and look inside that there's nothing broken (and no bugs eating the wood or so)

The question is actually interesting, and I think the piano example brings us to the a general principle: Assets where 1) it is clear what creates the value and 2) everybody can verify, without too much technical expertise, that the value-generating proposition is effectively present in the good/asset.

Bitcoin fulfills these requirements, because Bitcoin's ownership model (that you can transfer it only with the private key belonging to an address) is what you'll have to verify, and you can even measure the hashrate and thus its security easily (you only have to "trust" the difficulty algorithm).

Art is actually an example where 1) and 2) are not that clear. You can say perhaps that a painting is beautiful, but the cost of it often depends on the reputation of the artist, and that is something more difficult to check, because if it is from a famous artist, you need to make sure that the painting wasn't plagiarized.

Only art pieces from artists that have absolutely no reputation-derived value (i.e. from unknown artists you buy at Etsy or so) are exceptions. They are in the same category as pianos, because their value indeed depends on their "beauty".

Thus, pianos and good low-cost art are like Bitcoin

That is interesting if they have that kind of talent, these days it's important to have those instruments to verify gold and how much percentage of it is authentic. But if that tribe is reputable and the people from your country trusts them, that speaks of their reputation and their authenticity that their method is trustworthy and verifiable. I guess if it's in other assets to verify, as long as it involves the government and the banks, that must show authenticity of the assets we're interested with and those shops that are highly reputable like the jewelry stores.