Avatar
calle 9mo ago

Bitcoin-denominated Cashu tokens have been transmitted via sound, qr codes, stenography, rf radio, satellites in space, nfc cards, bluetooth, emojis, text messages, nostr posts, api calls, and even bank transaction memo fields.

The reason why this is happening is not only because it's extremely fun. It's also because Bitcoin is natively digital money. Bitcoin and the people using it are exploring all possibilities to transact between each other. This is the real digital energy.

Cashu makes Bitcoin light as a feather and transacting with it as easy as it can be. This is what it looks like when a new electronic money is starting to permeate our world. Bitcoin will be literally everywhere and in every corner of the world, just like the internet already is. This is what it looks like when that happens.

Reply to this note

Please Login to reply.

Discussion

Avatar
HolySats 9mo ago

For me it still sounds like a best way to donate satoshis for the network AKA lose them.

โ€œFuck I forgot in which emoji I hid that 100.000 satsโ€

Avatar
Ruminant Llama 9mo ago

It's almost certainly the first disclaimer in every cashu app, that this stuff is beta or highly experimental.

Don't be #reckless

Avatar
calle 9mo ago

Also write down your seed phrase!

Avatar
Ruminant Llama 9mo ago

Already a huge improvement in risk management that cashu has seed phrase backup at this stage! ๐Ÿซถ

Avatar
Jordan S 9mo ago

Next frontiers: Lifi, optic fiber, Steganography, nuerolink, infared, 3DS Street pass, ocean ripples, specialized rings, or gems.

Who knows, promising innovations with the stuff mentioned in the original post.

Bitcoin will become more, and more transmissible, and therfore more, and more uncensorable.

We're getting to the point they would have to drag humanity to pre-internet, and electricity times to stop bitcoin but even then technically Bitcoin could still exist on paper, and metal ๐Ÿ’€.

Avatar
MoneRogue 9mo ago

I look forward to taking my Cashu vaccine so my body can mine Bitcoin so I don't have to spend 4K on drivers and equipment.

Avatar
Jeroen Ubbink 9mo ago

Can we do carrier pigeons and smoke signals?

Avatar
Kush 9mo ago

This is profound. This is the paradigm shift.

Avatar
Tony Acid 9mo ago

"and even bank transaction memo fields" ๐Ÿค” - I'm bit doubtful, have to test it out.

Avatar
Pinguimdarelvaโšก 9mo ago

I didn't start yet with Cashu

Avatar
SecretAIry 9mo ago

You can try https://wallet.cashu.me/

And then go to one of my latest replies to calle and copy the peanut to receive 10 sats via Ecash. We need some testing.

Avatar
Pinguimdarelvaโšก 9mo ago

Too late

Avatar
Mrs.Goodlife 9mo ago

โ™ฅ๏ธ sounds good โ™ฅ๏ธ btc next step โšก๏ธ

Avatar
The Bitcoin Butcher ๐Ÿฅฉ๐Ÿ”ช 9mo ago

Thatโ€™s why I love #bitcoin and #nostr. Our community will be remembered for ever ๐Ÿ”ฅ๐Ÿš€

Avatar
The Bitcoin Street Journal 9mo ago

How do they initially get the bitcoin in order to use the cashu?

Avatar
calle 9mo ago

I just zapped you some

Avatar
The Bitcoin Street Journal 9mo ago

Thx. So in order for users to use cashu mints they need to get zapped sats first by some kind soul on Nostr?

Avatar
The Bitcoin Street Journal 9mo ago

Are you set to receive sats still Calle? Im trying to zap you back and it fails. I have zapped others today without error so I thought I would check

Avatar
SLCW 9mo ago

Iike embedding a token in an emoji. I've been playing with that for the past two weeks! ๐Ÿš€๓ …“๓ …‘๓ …ฃ๓ …˜๓ …ฅ๓ „ฒ๓ …Ÿ๓ „ข๓ „ถ๓ …ค๓ …•๓ „ณ๓ „บ๓ …Ÿ๓ …”๓ „ธ๓ …‚๓ …ง๓ …“๓ …ช๓ …Ÿ๓ …ฆ๓ „ผ๓ „ข๓ „ก๓ … ๓ …’๓ …ž๓ …๓ …ฅ๓ …’๓ …‡๓ …œ๓ …ฅ๓ …‘๓ …‡๓ „บ๓ … ๓ …”๓ „ธ๓ „ฝ๓ …ฅ๓ …‰๓ „ข๓ „ถ๓ …ช๓ …‘๓ „ณ๓ „ฉ๓ „ณ๓ …‘๓ …ˆ๓ …‚๓ …š๓ …’๓ „ข๓ …œ๓ …ฅ๓ …‰๓ …ˆ๓ …†๓ …š๓ …“๓ „ข๓ „ถ๓ „ ๓ …‰๓ …ˆ๓ …ƒ๓ „ฒ๓ …Ÿ๓ …๓ „ถ๓ … ๓ …ƒ๓ „ฑ๓ „ฒ๓ …๓ „ฒ๓ …†๓ „ด๓ …ง๓ …ƒ๓ ……๓ „ถ๓ „ท๓ …‰๓ …ˆ๓ „ณ๓ „ต๓ … ๓ „ท๓ „ถ๓ …˜๓ „ณ๓ „ท๓ „ถ๓ …ช๓ …•๓ „ต๓ „ฑ๓ …จ๓ „พ๓ …ช๓ …‰๓ …จ๓ „ฝ๓ „ด๓ …‚๓ …›๓ …Š๓ „ด๓ „พ๓ …™๓ „ฝ๓ …ช๓ …—๓ „ ๓ „ฟ๓ …„๓ „บ๓ …œ๓ „ฝ๓ …„๓ „ฑ๓ „ข๓ „ฝ๓ …„๓ …—๓ „ข๓ „พ๓ …๓ …๓ „ฃ๓ …‰๓ …๓ …๓ „ฃ๓ …‰๓ …๓ „ฝ๓ „ฅ๓ …‰๓ …‡๓ …‰๓ …ง๓ „พ๓ …๓ …‰๓ „ฅ๓ …Š๓ …‡๓ …†๓ …›๓ …‰๓ …ช๓ „ต๓ …ช๓ …Š๓ „ด๓ „ต๓ …ฉ๓ …Š๓ …๓ …‰๓ „ข๓ …‰๓ „ข๓ „ถ๓ …œ๓ „ฟ๓ …„๓ „ฝ๓ …ฉ๓ …‰๓ …๓ …‰๓ „ฃ๓ …‰๓ …„๓ …‰๓ „ ๓ „พ๓ …ช๓ …†๓ …™๓ …‰๓ …‡๓ „พ๓ …‰๓ „น๓ …๓ …€๓ …™๓ …๓ „น๓ …˜๓ …ค๓ …๓ …ฃ๓ „ ๓ …ฃ๓ …‰๓ …‡๓ „ฝ๓ …‘๓ „ป๓ …•๓ „ธ๓ „น๓ …—๓ „ฆ๓ „ก๓ …ก๓ …‡๓ …‰๓ „ธ๓ …ฃ๓ …‡๓ …‡๓ „ฒ๓ …๓ …ƒ๓ „ด๓ „จ๓ „ป๓ …“๓ „ฟ๓ …ค๓ „ท๓ „ข๓ „ก๓ „บ๓ …‰๓ …ฆ๓ …๓ „ถ๓ …›๓ …Ÿ๓ „ข๓ „ถ๓ …œ๓ …‡๓ „ณ๓ „ฑ๓ „ด๓ „บ๓ „จ๓ …ˆ๓ „ป๓ „ด๓ „ด๓ …ค๓ …‰๓ …˜๓ „ข๓ …ฆ๓ …˜๓ „ต๓ „น๓ …ง๓ …’๓ „ด๓ …๓ „บ๓ „ข๓ „ฃ๓ …ž๓ …•๓ „ฆ๓ …–๓ …ˆ๓ „ต๓ …ฉ๓ …’๓ …ค๓ …ˆ๓ …ฆ๓ …™๓ „ฟ๓ …Š๓ „น๓ …ข๓ …—๓ …–๓ „ณ๓ „ฅ๓ …๓ „ถ๓ …ช๓ …‡๓ „ณ๓ „ด๓ „พ๓ „ธ๓ …Š๓ „ ๓ …ž๓ …„๓ …ˆ๓ …š๓ …จ๓ …๓ „น๓ „ก๓ …˜๓ …œ๓ „ฆ๓ …†๓ …„๓ „ฃ๓ …“๓ …–๓ …˜๓ „ฒ๓ „ณ๓ …“๓ …ข๓ „ฅ๓ …‚๓ …ข๓ …—๓ …’๓ „ฑ๓ „ฅ๓ „ณ๓ … ๓ „ฉ๓ „ฟ๓ …ก๓ …ˆ๓ …€๓ ……๓ …ช๓ …ฅ๓ …๓ „ถ๓ …ฉ๓ …‡๓ „ณ๓ „ด๓ …‘๓ …๓ …ฅ๓ „ฆ๓ …‡๓ …Š๓ …ง๓ …ฅ๓ „ผ๓ „บ๓ „ฅ๓ „จ๓ … ๓ „ผ๓ …ˆ๓ …จ๓ „ต๓ …ฃ๓ …ฃ๓ „ค๓ „ก๓ „พ๓ …๓ „จ๓ …š๓ „ฉ๓ „ป๓ „น๓ …ก๓ …œ๓ …ง๓ „ ๓ „ฟ๓ „ฒ๓ …œ๓ … ๓ „น๓ …ช๓ „ฟ๓ „พ๓ …๓ …Š๓ „ฆ๓ …‚๓ …˜๓ …‰๓ …๓ …˜๓ …˜๓ …“๓ „ฃ๓ …˜๓ „ฑ๓ …Š๓ …‡๓ …Š๓ …˜๓ „ฝ๓ …„๓ …“๓ …ช๓ …Š๓ …„๓ „น๓ …ง๓ „ฝ๓ „ด๓ …”๓ …˜๓ …‰๓ …ช๓ …Š๓ …๓ …‰๓ …๓ …†๓ …›๓ …‰๓ …ช๓ „บ๓ …š๓ „ฝ๓ …๓ „พ๓ …™๓ …Š๓ …๓ ……๓ „ฃ๓ „ฟ๓ „ด๓ „ฑ๓ „ก๓ …‰๓ …š๓ „น๓ „ข๓ …‰๓ …š๓ …›๓ „ฃ๓ „พ๓ „ท๓ „พ๓ …๓ „พ๓ „ท๓ …‰๓ „ค๓ „ฝ๓ …š๓ ……๓ …ฉ๓ …‰๓ …‡๓ „ฝ๓ …จ๓ „ฟ๓ …„๓ ……๓ „ข๓ „พ๓ …ช๓ „ฑ๓ „ฃ๓ …‰๓ …š๓ „ถ๓ …œ๓ „พ๓ …๓ „ฝ๓ „ค๓ …Š๓ …š๓ „บ๓ …™๓ …‰๓ „ข๓ „ถ๓ …š๓ …‡๓ „ณ๓ „ต๓ „ณ๓ „ด๓ …Š๓ …„๓ „ฅ๓ …‚๓ „บ๓ „ฟ๓ „ก๓ „ค๓ „น๓ …๓ „๓ …ž๓ …‚๓ „ณ๓ …—๓ … ๓ „ง๓ …†๓ „พ๓ …๓ …•๓ …ฅ๓ …ข๓ …•๓ „ค๓ „บ๓ …‘๓ …ง๓ „ฅ๓ …‚๓ „ฃ๓ …ก๓ …ฆ๓ …ž๓ …Š๓ …๓ …–๓ „ข๓ „ฉ๓ „ป๓ …Š๓ „พ๓ …˜๓ …Š๓ „ป๓ „พ๓ …˜๓ …Š๓ …†๓ …—๓ …—๓ „บ๓ „ฒ๓ …–๓ „ผ๓ …จ๓ …ฅ๓ „ท๓ …ˆ๓ „ง๓ …๓ „ฅ๓ „บ๓ …ฃ๓ „ฅ๓ …—๓ ……๓ …ก๓ …”๓ „ฃ๓ …™๓ …‘๓ „พ๓ „ง๓ …š๓ …ช๓ „ฟ๓ …ƒ๓ …๓ „ด๓ „ฅ๓ …ช๓ …•๓ …๓ …’๓ „ท๓ „ธ๓ „ฆ๓ …š๓ …ฅ๓ „ ๓ …๓ „ธ๓ …†๓ …˜๓ …“๓ „ก๓ …—๓ …—๓ „พ๓ …๓ …˜๓ … ๓ …จ๓ „ฅ๓ …„๓ …๓ …ค๓ „ง๓ …‡๓ „ฃ๓ …ฃ๓ …ˆ๓ …—๓ „ฃ๓ …–๓ „ป๓ …™๓ „ป๓ „น๓ …ฃ๓ „ฉ๓ „ผ๓ „ฟ๓ …ค๓ „ข๓ „ ๓ …ž๓ …œ๓ „ฝ๓ …Š๓ …๓ „ฝ๓ „ก๓ „ง๓ „ข๓ „ฟ๓ …ˆ๓ …’๓ „ฆ๓ …ฉ๓ „พ๓ …˜๓ …“๓ …œ๓ …—๓ …—๓ …ข๓ …†๓ „ฑ๓ …†๓ …„๓ „ถ๓ „๓ …Š๓ …ค๓ „ด๓ …ช๓ ……๓ „ง๓ …๓ …”๓ „ธ๓ …ข๓ …›๓ …†๓ …ฉ๓ …—๓ „ต๓ …Ÿ๓ „ธ๓ …„๓ …€๓ „ด๓ …ง๓ …ค๓ …”๓ „ณ๓ …ช๓ …™๓ „ฑ๓ …ข๓ …‘๓ …–๓ „ฝ๓ …„๓ …ง๓ …™๓ …ฅ๓ …ฉ๓ …›๓ …‰๓ …‡๓ „ต๓ „ต๓ …‰๓ …ˆ๓ „พ๓ „ค๓ …๓ „ด๓ „ฑ๓ „ ๓ …Š๓ …„๓ …“๓ …ง๓ …Š๓ …š๓ …๓ „ข๓ …Š๓ „ด๓ „ต๓ „ฅ๓ „ฟ๓ …„๓ …›๓ „ฅ๓ „พ๓ …š๓ …”๓ …๓ „ฝ๓ …š๓ …‰๓ „ฃ๓ …Š๓ …‡๓ …๓ „ฃ๓ …Š๓ …๓ „บ๓ …œ๓ „พ๓ …ช๓ „ต๓ …ช๓ …‰๓ „ข๓ …๓ „ฅ๓ …Š๓ „ด๓ …๓ …ง๓ …‰๓ …ช๓ …—๓ „ฃ๓ „พ๓ …๓ …‚๓ …๓ „ฟ๓ „ด๓ …๓ „ ๓ „ฝ๓ …๓ …‰๓ …ง๓ „ฝ๓ …š๓ …›๓ „ข๓ „พ๓ „ข๓ „ถ๓ …˜๓ „พ๓ …š๓ „ฑ๓ „ข๓ …‰๓ …š๓ …˜๓ …œ๓ …Š๓ „ด๓ …‰๓ …ง๓ …‰๓ …ช๓ „ฒ๓ …˜๓ …‰๓ „ก๓ …—๓ …˜๓ „ฑ๓ … ๓ „ ๓ „ฒ๓ „พ๓ …˜๓ …๓ …ˆ๓ …†๓ …œ๓ …๓ „ฉ๓ …˜๓ …Š๓ …๓ „ฝ๓ …‘๓ …‰๓ …ช๓ …ข๓ …Š๓ „ข๓ …ช๓ „ ๓ „พ๓ …›๓ „น๓ …œ๓ …—๓ …‰๓ …ค๓ …ž๓ …ž๓ …„๓ …ง๓ …†๓ ……๓ …’๓ „ง๓ …จ๓ „ก๓ … ๓ …‘๓ …•๓ …‰๓ …‡๓ …ƒ๓ …š๓ …‰๓ …‡๓ …†๓ …‰๓ „น๓ „ธ๓ …š๓ …ข๓ …ก๓ …œ๓ …”๓ …Š๓ „ฑ๓ …š๓ „ค๓ …ก๓ …ฅ๓ …—๓ … ๓ …๓ „ด๓ …€๓ …ช๓ „ณ๓ „ ๓ „ถ๓ „จ๓ …‘๓ …Š๓ „จ๓ …ฉ๓ „ฑ๓ „ฉ๓ …’๓ …ˆ๓ „ ๓ …™๓ …ƒ๓ …˜๓ ……๓ …‘๓ …‘๓ …Ÿ๓ …๓ …ค๓ …Ÿ๓ „ฃ๓ …ง๓ …‰๓ …ˆ๓ „พ๓ …‰๓ „น๓ „ฟ๓ …ก๓ „ฃ๓ …ฃ๓ „ถ๓ „ ๓ „บ๓ …ฃ๓ „ค๓ …ฉ๓ …ก๓ …™๓ „ต๓ „ ๓ … ๓ „ฒ๓ …ˆ๓ „ฃ๓ …‘๓ …Ÿ๓ …›๓ „ป๓ „ธ๓ „ธ๓ „ฉ๓ „ฃ๓ „ต๓ … ๓ „ฆ๓ „ ๓ „ฑ๓ „จ๓ …‘๓ …˜๓ „น๓ „จ๓ …š๓ …จ๓ …‡๓ … ๓ …„๓ …ƒ๓ …ก๓ …‰๓ …ˆ๓ „บ๓ …‰๓ „น๓ „น๓ …˜๓ …”๓ …ฅ๓ „ฃ๓ „ท๓ …ฃ๓ „ข๓ …‚๓ „ฃ๓ „ถ๓ „ถ๓ …š๓ „ฒ๓ „ท๓ „ด๓ „ ๓ …”๓ „ค๓ …๓ „พ๓ …ˆ๓ …จ๓ …œ๓ „ณ๓ ……๓ „จ๓ …ฅ๓ …๓ „ฝ๓ …ง๓ …ž๓ „จ๓ „ฑ๓ …–๓ „ด๓ …˜๓ …๓ …‘๓ … ๓ …„๓ …ƒ๓ …ช๓ … ๓ „ท๓ „ถ๓ …˜๓ „ฑ๓ …‡๓ „ถ๓ …ช๓ …•๓ „ต๓ „ฒ๓ …™๓ „พ๓ …„๓ „ฝ๓ „ ๓ „ฟ๓ …„๓ „ฝ๓ …จ๓ „ฝ๓ „ท๓ „ต๓ „ก๓ „ฟ๓ …„๓ …—๓ „ ๓ …Š๓ „ท๓ …‰๓ „ ๓ „พ๓ „ด๓ „ถ๓ …๓ …Š๓ „ด๓ …‰๓ „ข๓ …‰๓ …ช๓ „น๓ „ ๓ …Š๓ …๓ …Š๓ …˜๓ „พ๓ …๓ …๓ „ก๓ „ฟ๓ „ด๓ „พ๓ …œ๓ „ฝ๓ …๓ …‰๓ „ก๓ …‰๓ …ช๓ …‚๓ …š๓ „พ๓ …ช๓ ……๓ …จ๓ „ฝ๓ „ด๓ …†๓ …˜๓ …‰๓ …‡๓ „ต๓ „ข๓ …‰๓ …ช๓ „น๓ „ข๓ „ฟ๓ „ท๓ ……๓ „ข๓ „ฟ๓ …„๓ …“๓ „ฅ๓ …‰๓ …ช๓ …“๓ „ ๓ …Š๓ …๓ „ต๓ …จ๓ …‰๓ …‡๓ „พ๓ …‰๓ „น๓ …๓ „น๓ ……๓ „ฃ๓ „ข๓ „ข๓ …ข๓ …ˆ๓ …—๓ „ข๓ „ ๓ …Š๓ „๓ „ฉ๓ …ข๓ …–๓ „ก๓ …ž๓ …ˆ๓ …ช๓ …๓ „ป๓ …—๓ …ˆ๓ „ค๓ „ข๓ …˜๓ „ฟ๓ …Ÿ๓ …˜๓ „ผ๓ „ข๓ …ง๓ …ช๓ …”๓ …ข๓ …ฆ๓ …„๓ …ง๓ …–๓ …”๓ …ˆ๓ …›๓ „ฒ๓ „ท๓ „ถ๓ …›๓ …Ÿ๓ „ข๓ „ถ๓ …œ๓ …‡๓ „ณ๓ „ฒ๓ …’๓ …ฃ๓ …ข๓ …’๓ …ง๓ „ ๓ „จ๓ …Ÿ๓ „ ๓ …‰๓ …˜๓ …ฃ๓ „ข๓ …‡๓ …•๓ „จ๓ …”๓ „บ๓ …€๓ …ฃ๓ …ง๓ …ข๓ „๓ …ฅ๓ …–๓ „ณ๓ …‰๓ …ข๓ „ค๓ „ฒ๓ …ช๓ „ค๓ …ช๓ „พ๓ …’๓ …๓ …Ÿ๓ …’๓ …†๓ „ป๓ …ƒ๓ „ ๓ …‡๓ „ถ๓ …ช๓ …‡๓ „ณ๓ „ด๓ „ฉ๓ …€๓ ……๓ „ฃ๓ …›๓ …จ๓ „บ๓ „ฃ๓ „ค๓ … ๓ „ฑ๓ …Ÿ๓ …ฉ๓ …’๓ …œ๓ …ž๓ …ฃ๓ „ต๓ …ƒ๓ „ผ๓ …‡๓ …†๓ „น๓ „ธ๓ …“๓ „ข๓ …‚๓ „๓ „ฟ๓ …๓ …๓ …จ๓ …‘๓ …ก๓ …ค๓ „ง๓ …„๓ …–๓ …๓ …๓ …‡๓ „ก๓ „ข๓ „ถ๓ …ฉ๓ …‡๓ „ณ๓ „ฒ๓ …š๓ …‚๓ …ž๓ …Ÿ๓ „ด๓ …•๓ …ฅ๓ …˜๓ …„๓ …ฃ๓ …š๓ … ๓ „ค๓ …ช๓ „ฝ๓ …ฃ๓ …‰๓ …Ÿ๓ …“๓ …ž๓ …ƒ๓ …‘๓ „ฅ๓ …๓ …Š๓ …˜๓ …ฃ๓ „ถ๓ ……๓ …๓ „ท๓ ……๓ …›๓ …œ๓ …–๓ …‰๓ …™๓ „ฒ๓ …ก๓ …Ÿ๓ …๓ „ถ๓ „ฑ

Avatar
Boniz23โšก๏ธ๐Ÿ‡ฎ๐Ÿ‡นโ‚ฟ ๐Ÿดโ€โ˜ ๏ธ 9mo ago

Bitcoin is the first truly native asset of the internet, and Cashu is taking it to the next levelโ€”frictionless, borderless, limitless money. Weโ€™re only scratching the surface of its potential. What happens when value becomes truly liquid and omnipresent? The answer lies in timeโ€ฆ and blocks. GM calle ๐Ÿงกโšก๏ธ

83
Shawn C. 9mo ago

Ecash feels like the final piece of the puzzle! Very excitibg!

Avatar
SecretAIry 9mo ago

nostr:nevent1qvzqqqqqqypzq5xeflpdskqvdq4swxj59793uvdzqzc9pzatjk3nhmcg2h0js8trqqsx4v7zxmznmjt6hhfc8lme5q2dwpnen62fag350a27pmmczfkvc3c4y3j92

Tinkering around and testing with it for quite some time now.

How comes the number "Allowance left (sat)" under Enable NWC alwasys adjusts itself. I don't get it...

Avatar
satskew 9mo ago

very cool calle - you all are truly building the future as we speak

Avatar
ABitFit 9mo ago

GM!

Excited to try more...

Step out of my comfort zone.

Avatar
Bison 9mo ago

Weโ€™re going to stash nuts all over the internet.

-internet squirrels

nostr:nevent1qqsx4v7zxmznmjt6hhfc8lme5q2dwpnen62fag350a27pmmczfkvc3cppamhxue69uhkummnw3ezumt0d52fgw67

Avatar
PHESKY 9mo ago

This is digital money doing what it was born to do spreading like wildfire through every channel imaginable. Cashuโ€™s basically Bitcoinโ€™s jetpack. #Bitcoin #Phesky

Avatar
Manuel 9mo ago

Bullish af

Avatar
StellarStoic 9mo ago

I think it's appropriate to shill my stegonography tool right here for easier nostr event secrets extraction ๐Ÿ˜ถโ€๐ŸŒซ๏ธ

https://snofl.com/stego/stego.html

Oh and one more correction to Calle's typo๐Ÿ˜„

Stenography: is about writing quickly using shorthand.

Steganography: is about hiding information inside other media.

Avatar
calle 9mo ago

Thank you ๐Ÿ‘

Avatar
Tico ๐Ÿ‡จ๐Ÿ‡ท 9mo ago

Yeah yeah yeah