Blockchain ni teknolojia ya hifadhi ya taarifa inayofanya kazi kama daftari la kumbukumbu la kidijitali linalosambazwa kwa watu wengi (nodes), ambapo taarifa zote (kama miamala ya fedha) huandikwa kwenye vizuizi (blocks) vinavyounganishwa kwa mnyororo mmoja usiobadilika. Maelezo kwa ufasaha: - Block ni kama ukurasa wa daftari ambao una taarifa muhimu kama jina la mtumaji, mpokeaji, kiasi cha fedha, muda, n.k. - Kila block huunganishwa na block iliyotangulia kwa kutumia hash, ambayo ni alama ya kipekee inayotokana na taarifa zote zilizopo kwenye block hiyo. - Mabadiliko yoyote kwenye block moja yatasababisha mnyororo mzima kutokubaliana, hivyo kuzuia udanganyifu. - Blockchain husambazwa kwenye kompyuta nyingi duniani kote (decentralized), na kila node ina nakala ya blockchain hiyo nzima. Mfano halisi: Katika mtandao wa Bitcoin, kila muamala unaofanyika (mf. A kumtumia B bitcoin) huandikwa kwenye block mpya. Block hiyo ikishathibitishwa na mtandao mzima, inaongezwa kwenye blockchain ya kudumu. Hakuna mtu mmoja anayeweza kuibadilisha baadaye. Matumizi ya Blockchain: - Fedha za kidijitali (Bitcoin, Ethereum) - Uthibitisho wa umiliki wa ardhi kwa njia ya dijitali - Kura za kidijitali kwenye uchaguzi - Ufuatiliaji wa bidhaa kutoka kiwandani hadi kwa mteja (supply chain) Faida: - UwazI (Transparency) - Usalama (Security) - Hakuna haja ya mtu wa kati (Decentralization) - Hupunguza gharama na muda wa uthibitishaji Blockchain ni msingi wa mapinduzi ya teknolojia duniani, hasa katika sekta ya fedha, afya, usafirishaji, na utawala. #Blockchain #Tanzania #BitcoinSafariTz #Swahili

Bitcoin ni sarafu ya kidijitali (digital currency) na mfumo wa malipo wa mtandao wa wazi (peer-to-peer) ambao ulianzishwa mwaka 2009 na mtu au kundi la watu waliotumia jina la bandia Satoshi Nakamoto. Tofauti na sarafu za kawaida kama shilingi au dola, Bitcoin haidhibitiwi na serikali au benki kuu yoyote. Badala yake, inategemea teknolojia inayoitwa blockchain — ambayo ni orodha ya rekodi ya miamala yote ya Bitcoin iliyowahi kufanyika, inayohifadhiwa kwa usalama na mtandao wa kompyuta zilizopo duniani kote. Bitcoin inatumika kama njia ya kutuma na kupokea fedha popote duniani bila haja ya mtu wa kati kama benki. Miamala hufanyika kwa haraka, gharama nafuu, na inaweza kuthibitishwa na yeyote kupitia mfumo wake wa wazi. Pia, Bitcoin ina kiwango maalum cha kiasi cha sarafu zitakazowahi kuwepo: milioni 21 tu, na hii inafanya iwe mali adimu (scarce) kama dhahabu. Sababu nyingine inayofanya Bitcoin kuwa ya kipekee ni uwezo wake wa kumuwezesha mtu kuwa na udhibiti kamili wa fedha zake kupitia wallets (kama hardware wallet, mobile wallet n.k). Hii ni tofauti na akaunti za benki ambapo taasisi ina mamlaka ya kuzizuia au kufuatilia miamala. Kwa sasa, Bitcoin imekuwa zaidi ya sarafu tu — ni harakati ya kifedha inayotetea haki za kifedha, uhuru wa kifedha, na njia bora ya kujilinda dhidi ya mfumuko wa bei na mifumo ya kifedha isiyo na usawa, hasa kwa nchi zinazoendelea kama Tanzania. #Bitcoin #UelewaWaFedha #TeknolojiaMpya #BitcoinSafariTz

It might makes sense just to get some in case it catches on. If enough people think the same way , that becomes a self fulfilling prophecy.

Yesterday’s Proof of Work session with Joshua Graham was a remarkable and insightful experience, centered around the topic: “Bitcoin & Nostr.” Joshua took us on a deep dive, starting with a clear explanation of what Bitcoin is, how it works, and why it matters in today’s financial and digital landscape. He then introduced us to Nostr (Notes and Other Stuff Transmitted by Relays) — a decentralized protocol for building censorship-resistant social networks. Joshua broke down how Nostr works, its significance in the era of increasing digital control, and the difference between centralized social media platforms like Twitter or Facebook versus decentralized platforms built on Nostr. He also shared practical examples of Nostr clients such as damusapp, Amethyst, primalapp and Iris, and guided attendees on how to create a Nostr account using various apps. The session was highly interactive, with many participants engaging and asking great questions, seeking clarity on how Nostr and Bitcoin intersect to build a freer internet and financial future. We at BitcoinSafariTZ are extremely thankful to Joshua for his time, energy, and knowledge. His contribution greatly empowered our community. We look forward to more collaborative sessions that help expand Bitcoin and decentralized tech education across Africa.

Happy 😊 New Week! We’re excited to officially announce our special session this week featuring guest speaker Win Ko Ko Aung from the Human Rights Foundation and Bitcoin Policy Institute. Topic: "Bitcoin & Human Rights" Join us as we explore how Bitcoin empowers individuals and protects human rights worldwide. This eye-opening session will be moderated by Graysatoshi, Founder of BitcoinSafariTz. 📅 Date: This Saturday ( 27th/09/2025) 🎟 Seats are limited – Book now: https://calendar.app.google/6eCFgqUi376yMLKJ6 Let’s learn together and grow the Bitcoin movement! #Bitcoin #HumanRights #BitcoinEducation #BitcoinSafariTz #FreedomMoney #AfricaBitcoin #DigitalFreedom #BTC

Bitaxe Gamma 601 Device in Tanzania 1. What is Bitaxe Gamma 601? The Bitaxe Gamma 601 is a miniature open-source Bitcoin mining device built with the latest ASIC mining chip (Antminer S19's BM1397 or similar). Unlike large industrial miners, Bitaxe is a low-cost, low-power, and educational Bitcoin miner designed for individuals, hobbyists, developers, or small circular economies. It’s part of the Bitaxe project — a community-driven initiative that empowers anyone to learn about Proof-of-Work mining through hands-on experience. 2. What Makes Bitaxe Unique? - Open-source hardware & firmware: You can inspect, modify, or upgrade it. - Runs independently: No need for a PC or mining pool; it mines solo using Stratum V2 or solo mining pools. - Low power consumption: It uses around 10–15 watts, meaning it’s perfect for homes or schools without huge energy bills. - Display & buttons: Has an in-built screen showing mining status and simple controls. 3. How Does It Work? 1. Power it on (USB-C or adapter). 2. Connect to Wi-Fi and set up via its web interface. 3. Choose how you want to mine: - Solo mining (attempt to mine a block directly) - Connect to a public mining pool like Slush Pool or user-hosted pool. 4. The device starts hashing — solving cryptographic puzzles to secure the Bitcoin network. 5. You can monitor stats: hash rate, temperature, uptime, etc., live on the screen. 4. Why Is Bitaxe Useful in Tanzania? - Educational Tool: Great for teaching Bitcoin mining, energy use, decentralization, etc. - Low Entry Cost: Affordable compared to industrial ASICs. - Runs on solar or mobile power banks — fits well in off-grid or low-electricity areas. - Supports circular Bitcoin economy by showcasing real PoW mining locally. 5. Where to Get One? You can win one via educational events (like from BitcoinSafariTZ), or order one from: GreenBTCClub Link 🔗 https://miningshop.greenbtc.club?ta_aff=PXVIRIXLQ Code 👉 PXVIRIXLQ - Trusted community members or vendors globally - Custom prebuilt units from enthusiasts 6. Final Tips - Bitaxe Gamma 601 won’t make you rich, but it’s a powerful learning tool. - Best used for educational, demonstration, or supporting decentralization in Bitcoin mining. - Requires basic Wi-Fi and electricity. - No fans, no noise — great for home use. The Bitaxe Gamma 601 is a powerful, affordable, and educational Bitcoin miner perfect for Tanzania's growing Bitcoin community. It teaches people how Bitcoin mining works, supports decentralized participation, and inspires innovation in the circular economy — all with minimal cost and energy.

Trezor Wallet (Model One) in Tanzania – Full Explanation 1. What is Trezor Wallet? Trezor is a hardware wallet — a small, physical device used to store your cryptocurrency securely offline. It was developed by SatoshiLabs and is one of the first and most trusted cold wallets on the market. The Model One is the entry-level version of Trezor. 2. Why Use Trezor in Tanzania? With the increase of scams, phishing, and hacks in the crypto space, especially in developing markets like Tanzania, a hardware wallet like Trezor gives you full self-custody and protection of your Bitcoin and other crypto assets. 3. How Trezor Model One Works: - It stores your private keys offline, away from internet exposure. - You connect it via USB to your computer or phone (using OTG cable). - You use Trezor Suite (its app) to send, receive, and manage crypto. - To authorize any transaction, you physically confirm it on the device. 4. Key Features: - Supports Bitcoin, Ethereum, and 1000+ other coins. - Uses a PIN code, passphrase, and recovery seed (12/24 words). - Works on desktop and mobile (Android only). - Fully open-source. 5. Why It's Safe: - Keeps your keys offline (cold storage). - Immune to keyloggers, viruses, and phishing attacks. - You’re in full control—not your exchange, not third parties. 6. Where to Buy in Tanzania? You can order directly from Trezor.io or look for verified local crypto vendors (ensure it's sealed and untampered). 7. Important Tip: Always back up your recovery phrase and never share it. If lost or stolen, you can recover your wallet using this phrase. Trezor Model One is a powerful, beginner-friendly tool to secure your Bitcoin and other assets in Tanzania. It empowers users with full self-custody and protection from common crypto threats.

Hello Bitcoin Family, We invite you to support the incredible Bitcoin adoption movement led by BitcoinSafariTz, a grassroots initiative driving real proof of work across Tanzania and East Africa. Through tireless education, merchant onboarding, meetups, and student engagement, BitcoinSafariTz is creating a true circular Bitcoin economy from the ground up. Now, you can be part of this mission by supporting their fundraising campaign on Geyser.Fund. Your contribution will go directly into expanding Bitcoin adoption efforts — including tools, travel, events, and learning materials that empower communities with the power of decentralized money. Why support? BitcoinSafariTz is one of the few African-led initiatives that are fully committed to spreading Bitcoin-only education, building merchant adoption via btcmap.org, and equipping the youth with open-source resources like My First Bitcoin and PlanB.network. Their work has already impacted dozens of communities — your support will amplify this. Explore their *proof of work* and updates here: 🔗 Geyser:https://geyser.fund/project/bitcoinsafari 🐦 Twitter/X: https://x.com/BitcoinSafariTZ 📸 Instagram: https://www.instagram.com/bitcoin_safari_tz?igsh=ajIyNDJ0eWF6Ymhk Let’s orange-pill Africa together — sharing is winning🧡🔥 #BitcoinEducation #AfricaToTheMoon #ProofOfWork #BitcoinSafariTz

🔁 Recap of Yesterday's Bitcoin Class — PoW Session with Charlie Yesterday, we had a powerful and insightful session during our Proof of Work (PoW) Bitcoin class, featuring Charlie as our guest speaker. The topic of the session was: “Bitcoin & Building a Circular Economy in Africa” We had a truly engaging and educational session where Charlie shared deep insights on how we, as Africans, can build a strong and sustainable Bitcoin circular economy across the continent. 🧠 Key Points Charlie Shared: 1. Start Local – Build trust within communities by educating local merchants and consumers. 2. Merchant Onboarding – Guide business owners on how to accept Bitcoin (on-chain and Lightning) and the benefits they can gain. 3. Spending Opportunities – Ensure people know where they can spend Bitcoin, which increases usage and adoption. 4. Listing on btcmap.org – Charlie showed how Tanzanian businesses can easily list on btcmap.org, increasing visibility globally. 5. Education First – He emphasized the importance of quality Bitcoin education before any adoption efforts. 🌍 Global Examples Charlie gave a great example of Berlin's Bitcoin Circular Economy, explaining how they: - Onboard merchants - Educate the public - Build strong local usage He also compared this with successful efforts in El Salvador, showing how consistent education and real-world use cases lead to growth. 📚 Bitcoin Education Tools To help African communities grow, Charlie strongly recommended two open-source Bitcoin education platforms: - https://myfirstbitcoin.io – Known for the Bitcoin Diploma program used in El Salvador. - https://planb.network – Offers free, structured Bitcoin education in multiple languages. ⚡️ Real-World Test: Chapsmart During the session, we tested a real product from Tanzania — https://chapsmart.com . We demonstrated how anyone from around the world can send money to Tanzania via Bitcoin using Lightning, and the recipient receives it instantly through their M-Pesa number. It was fast, smooth, and a perfect example of Bitcoin utility in Africa. 🧠 Final Words from Charlie: > “Understanding money is the first step to understanding Bitcoin. Without that knowledge, people will remain vulnerable to scams and altcoin hype.” He urged everyone to prioritize education before speculation and to focus on real adoption rather than hype. 🎉 We are very thankful to Charlie for the amazing session and the knowledge shared. Students from Tanzania, Kenya, Nigeria, South Africa, and more participated and asked great questions. 📌 If you missed the session, don’t worry — we’ve got a full recap and resources for you to go through. 👉https://drive.google.com/file/d/1ABcnT7uuXoBGnSeAZMgLHz88_D6-lf2v/view?usp=drivesdk Stay tuned and keep learning — the Bitcoin journey has just begun! 🧡

Hello BitcoinSafariTz Community, We are incredibly honored and deeply grateful to extend our heartfelt thanks to all the voluntary teachers and Bitcoin experts who selflessly dedicated their time, knowledge, and energy to support our 3rd Cohort - Bitcoin Diploma Course. Your unwavering commitment from the start of the program to its completion has been a true blessing to us and to every student who took part in this journey. Through your guidance, you’ve inspired, empowered, and educated future Bitcoiners across Africa and beyond. The knowledge you shared has left a lasting impact, and we are confident that the ripple effects of your efforts will continue to shape lives and communities. A special thank you to: 1. Sharon Murugi 2. Jetty Nakamoto 3. James O'Tudor 4. Fidelis 5. AdamSimecka 6. Okechukwu Angel 7. Leo Lin 8. Merlin Osterman 9. Giacomo Zucco 10. Nat Cole 11. Akme 12. Josh Graham Your support means the world to us. May you all continue to be blessed in all you do. Together, we are building a stronger, educated, and more financially free Africa through Bitcoin. Asante sana 🙏 — BitcoinSafariTz Team Source 👉🏿https://x.com/BitcoinSafariTZ/status/1968440189434610169?t=v_TdHpWl0dVIC-0Za1bC-Q&s=19