This OP_RETURN may outlast even Seed Keys. But your recovery phrase belongs only on metal. nostr:nevent1qvzqqqqqqypzpnzlyk0sxe5r0x8y55s8rkaewgu8qtlmduxgttmdyu7gmkl9czhmqqsznr8gxdmftn4wk22ywl9vtvxxrw5...