1 00:00:00,720 --> 00:00:03,880 Your wallet history can tell strangers a lot 2 00:00:03,880 --> 00:00:07,440 about you. Tacit gives Bitcoin and Ethereum users 3 00:00:07,440 --> 00:00:10,080 a way to move value with confidential notes. 4 00:00:10,500 --> 00:00:13,060 Let's walk through WELD, see how a private 5 00:00:13,060 --> 00:00:15,620 payment works, and get clear on what privacy 6 00:00:15,620 --> 00:00:16,580 actually covers. 7 00:00:18,220 --> 00:00:21,740 Start at tacit dot finance slash weld, then 8 00:00:21,740 --> 00:00:25,060 choose Get started. WELD brings private Ether and 9 00:00:25,060 --> 00:00:27,380 Bitcoin payment tools together in one place. 10 00:00:27,380 --> 00:00:30,520 I'm using an unfunded demo identity here. 11 00:00:30,780 --> 00:00:33,020 You'll see the real forms, but I won't 12 00:00:33,020 --> 00:00:34,820 broadcast a deposit or payment. 13 00:00:36,360 --> 00:00:39,040 You can open a Tacit identity with an 14 00:00:39,040 --> 00:00:42,640 Ethereum wallet, a Bitcoin wallet, or a passkey. 15 00:00:42,640 --> 00:00:44,480 With Ethereum, you sign a message. 16 00:00:44,920 --> 00:00:47,820 That's different from sending a transaction, so opening 17 00:00:47,820 --> 00:00:49,480 the identity doesn't spend gas. 18 00:00:50,000 --> 00:00:53,560 That signature matters: it controls the Tacit identity. 19 00:00:53,560 --> 00:00:56,380 Check that you're on the official app, and 20 00:00:56,380 --> 00:00:59,100 keep your wallet or passkey recovery method safe. 21 00:01:00,600 --> 00:01:04,020 For this walkthrough, open Private Ether and choose 22 00:01:04,020 --> 00:01:06,960 Tacit pool. The neighboring On this device option 23 00:01:06,960 --> 00:01:09,100 uses a different pool, so don't mix up 24 00:01:09,100 --> 00:01:12,420 their instructions. Choose Make private, enter an amount, 25 00:01:12,600 --> 00:01:14,860 and review the funding source, quote, and fees. 26 00:01:15,420 --> 00:01:18,720 This route wraps Ether into confidential tETH notes. 27 00:01:18,720 --> 00:01:21,900 Confirm the deposit in your wallet, then wait 28 00:01:21,900 --> 00:01:24,860 for confirmation and settlement before using the private 29 00:01:24,860 --> 00:01:25,300 balance. 30 00:01:26,860 --> 00:01:28,300 So, what's a note? 31 00:01:28,720 --> 00:01:30,200 Think of it as a private claim to 32 00:01:30,200 --> 00:01:33,500 funds. Spending consumes valid notes and creates new 33 00:01:33,500 --> 00:01:36,400 ones. A zero knowledge proof checks the rules 34 00:01:36,400 --> 00:01:38,260 without exposing the hidden values. 35 00:01:38,780 --> 00:01:42,280 Tacit's general pool uses SP1 proofs to reconcile 36 00:01:42,280 --> 00:01:44,020 Bitcoin and Ethereum state. 37 00:01:44,400 --> 00:01:47,360 The animation is a simplified model of verification. 38 00:01:47,360 --> 00:01:50,360 It isn't a transaction, and it doesn't mean 39 00:01:50,360 --> 00:01:52,900 every Tacit pool uses the same proof system. 40 00:01:54,620 --> 00:01:57,040 Back in the Tacit pool, choose Send. 41 00:01:57,420 --> 00:02:00,260 Enter the recipient's Tacit address or a supported 42 00:02:00,260 --> 00:02:03,340 name. If a name resolves, check the recipient 43 00:02:03,340 --> 00:02:05,020 it points to before you continue. 44 00:02:05,480 --> 00:02:07,600 Then review the amount and relay fees. 45 00:02:08,200 --> 00:02:10,660 In this route, the recipient claims the payment 46 00:02:10,660 --> 00:02:11,840 in their Tacit wallet. 47 00:02:12,340 --> 00:02:14,260 The claim fee comes out of that payment, 48 00:02:14,380 --> 00:02:16,300 so factor it into what they'll receive. 49 00:02:17,840 --> 00:02:20,180 Want to explore the Bitcoin side first? 50 00:02:20,500 --> 00:02:22,740 Open Secret Sats and select signet. 51 00:02:22,920 --> 00:02:25,420 Use Get signet sats, then buy and shield 52 00:02:25,420 --> 00:02:30,000 test cBTC. After that, explore Pay privately, Receive, 53 00:02:30,000 --> 00:02:33,060 and Exit. These specialized pool spends are proved 54 00:02:33,060 --> 00:02:35,560 in your browser. Keep the test network label 55 00:02:35,560 --> 00:02:38,680 in view. Signet sats are test coins, and 56 00:02:38,680 --> 00:02:41,520 signet cBTC is a test token with no 57 00:02:41,520 --> 00:02:42,320 Bitcoin backing. 58 00:02:44,080 --> 00:02:45,380 Here's the key limit: 59 00:02:45,380 --> 00:02:47,000 privacy has a boundary. 60 00:02:47,540 --> 00:02:51,260 Inside the confidential pool, amounts, consumed notes, and 61 00:02:51,260 --> 00:02:52,960 stealth recipients can stay hidden. 62 00:02:53,460 --> 00:02:56,340 Deposits and withdrawals remain public chain events. 63 00:02:56,860 --> 00:03:00,180 Bitcoin addresses and the public transaction graph don't 64 00:03:00,180 --> 00:03:03,040 disappear either. So private payments don't make your 65 00:03:03,040 --> 00:03:04,880 entire wallet history anonymous. 66 00:03:05,460 --> 00:03:08,060 Read the security details for the pool and 67 00:03:08,060 --> 00:03:09,260 route you're actually using. 68 00:03:10,820 --> 00:03:13,180 Before you send, check four things: 69 00:03:13,180 --> 00:03:15,760 the app, the pool, the recipient, and the 70 00:03:15,760 --> 00:03:18,120 fees. Wait for your deposit to settle. 71 00:03:18,460 --> 00:03:20,900 If a balance lookup fails, retry it. 72 00:03:21,220 --> 00:03:23,620 An unavailable balance doesn't mean zero. 73 00:03:24,160 --> 00:03:26,360 Keep a recovery method you can use, and 74 00:03:26,360 --> 00:03:28,480 practice on signet if you're still learning the 75 00:03:28,480 --> 00:03:28,700 flow. 76 00:03:30,500 --> 00:03:33,620 That's the tour: open WELD, understand the note 77 00:03:33,620 --> 00:03:35,460 model, and choose the route that fits. 78 00:03:36,000 --> 00:03:38,640 You'll find the app links, official docs, and 79 00:03:38,640 --> 00:03:40,620 the written walkthrough in the companion guide. 80 00:03:40,620 --> 00:03:44,220 Start with understanding what stays private, then take 81 00:03:44,220 --> 00:03:45,000 the next step. 82 00:03:46,400 --> 00:03:49,920 And a final shout-out to Ross, Tacit's creator, 83 00:03:50,340 --> 00:03:53,080 and to XNS for its work on human-readable 84 00:03:53,080 --> 00:03:56,380 wallet names. Their profiles and project links are 85 00:03:56,380 --> 00:03:58,240 in the guide. Thanks for watching.