you can just use bitcoin
you can juat use nostr.
nostr:nevent1qqsfsy70fd66yy99urjjqnmfkwhpxxw5mykchuhd07jn0xxf27z6jssppemhxue69uhkummn9ekx7mp0qgsqfjg4mth7uwp307nng3z2em3ep2pxnljczzezg8j7dhf58ha7ejgrqsqqqqqpgzr6mq
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nostr:nevent1qqswvngw0s0fugnfyhxn3zm2k2ujrr8yv8cmnu4m9fdnfjdf8q0tfuqpzemhxue69uhkummnw3ezu6m9dp5hjtnwv46z7q3qh49w8en79xty6j2pwgnpm3znjhyf767jua6xgt3kvyn3w80ms86sxpqqqqqqztkpcsh