I'm pretty sure he mentioned Smoke signal and Semaphore Flags (which means combination of both method), so i think this is how it works :
1. Sender make signed transaction
2. Sender convert the signed transaction into raw transaction (probably in binary, hex, base36, or other format)
3. Sender make smoke signal which indicate start broadcast transaction
4. Sender start Semaphore Flags while receiver write down sent message

But sender/receiver must agree on :
1. Raw transaction format they use
2. Standard of the smoke signal such as broadcast transaction, block or other message

IMO it's not realistic and should only used as last resort, other method that he mentioned is more realistic in case of extreme censorship. Besides, i'm not sure if it's practical for anything besides transaction due to it's size which makes information transaction is very big.

If he meant only use Smoke signal, then @psycodad explanation is what you're looking for. But even for SegWit transaction with 1 input and 1 output, you need to change your smoke signal up to 1184 times (148 bytes * 8 ).

It's perfect to make traveler feel unsafe/violated while most criminals could evade that easily such as store all data on cloud storage with encryption and only bring Features phone.
"Digital Strip Search" would be useful if there's good/moderate proof and everyone who asked to comply is provided with the proof.

So basically you send your Bitcoin from Electrum to a gaming website. But there's no way your transaction is confirmed (included in blocks) if it's not broadcasted.

Have you checked your network status (circle on right bottom of Electrum), if it's not green, that's the reason. You also could broadcast your transaction manually with 3rd party TX broadcaster.

Looks like Electrum will support LN very soon, this surely will boost LN usage since majority of Bitcoiner who own desktop use Electrum.

https://twitter.com/ElectrumWallet/status/1047498819133480961

Hi, i'm looking for gambling website which accept Monero and Tor friendly (have .onion domain or at least don't have CloudFlare/similar annoying protection).

I find SafeDice (safedice2ge73n2g.onion, but looks like the admin/staff isn't active and there's few delay/problem. Other website which accept Monero don't have .onion website and few even have CloudFlare enabled which is annoying for Tor users.

The real question is what is the trade-off to achieve high TPS? Most blockchain/cryptocurrency achieve high TPS by sacrifice decentralization to some degree.
Some prevent run full-nodes at low cost (eg. BCH), some use have master nodes (eg. Dash) and many use super nodes (eg. EOS).

If we're talking about off-chain solution, then there are another problem such as ease of use, need to be online to prevent cheating or not everyone use same off-chain solutions.
But, off-chain have better scalability while preserve decentralization.

TLDR : High TPS is useless if it's centralized or only few people/nodes can make a decision which makes single point on failure.

Recently i read some Bitcoin improvement idea, but i'm really surprised there are barely any information on news media, medium and this forum. So, i decided to make this thread.

What is Dandelion?
Dandelion is a protocol to prevent IP tracking/nodes which firstly broadcast transaction. Bitcoin protocol don't need to be changed since it's implemented on Bitcoin client, which means no soft/hard-fork required.

Why it's necessary?
Every time a node broadcast a transaction, obviously you sent the transaction to other nodes. That means other nodes know who broadcast the transaction to them.
If there's group/state who wish to track transaction origin, they could run many nodes and connect to as many nodes as they can so they can get the node which broadcast the transaction first.

How it works (simplified) ?


1. Make a privacy graph (few people refers it to hamiltonian circuit or "anonymity set") which contain random peer.
2. A node broadcast a transaction to another peer on circuit
3. The next peer randomly decide to :
    A. broadcast the transaction to Bitcoin network (10% chance by default)
    B. Only broadcast to next peer on circuit (back to step 3)

Potential problems
1. Not enough peers to participate, which reduce Dandelion's advantage.
2. While Dandelion bring good privacy improvement, IMO state/group could track to the "anonymity set".

My opinion
Dandelion bring lots of advantage which require no protocol change and user barely feel the disadvantage (such as slightly longer transaction propagation). Bitcoin Core or any clients should implement Dandelion.

Estimated release date
It was planned along with Bitcoin Core 0.17.0 releases, but currently planned released along with 0.18.0.

p.s. this thread might be changed if i realized there's wrong information, find simpler/more accurate explanation or found reliable information source.

Some informations:
1. https://arxiv.org/pdf/1701.04439.pdf
2. https://github.com/dandelion-org/bips/blob/master/bip-dandelion.mediawiki
3. https://t4ch.top/dandelion-a-bitcoin-protocol-to-hide-a-transactions-origin/
4. https://medium.com/@thecryptoconomy/dandelions-and-a-bright-future-for-bitcoin-privacy-712dbc4b1ec5
5. https://bitcoinmagazine.com/articles/anatomy-anonymity-how-dandelion-could-make-bitcoin-more-private/
6. https://github.com/bitcoin/bips/blob/master/bip-0156.mediawiki
7. https://hackernoon.com/bitcoin-upgrades-with-dandelion-the-transaction-privacy-protocol-ae9647bfbcb2

This thread is archived at https://archive.fo/mg8oZ

Catatan
1. Motivasi untuk membuat thread ini berasal dari https://medium.com/@snsmth/dont-die-of-consumption-learn-by-writing-f926c9f5a628
2. Jangan pernah memberikan seed/private key kepada siapapun
3. Semua spam, off-topic atau FUD akan saya hapus
4. Silahkan bertanya jika masih bingung atau ingin belajar lebih lanjut
5. Mohon koreksi jika ada kesalahan dalam thread ini

Latar Belakang
Setelah 1 tahun lebih SegWit diaktifkan, adopsi SegWit masih sangat rendah, hanya sekitar 40% meskipun SegWit menawarkan berbagai kelebihan.

Kelebihan SegWit
Kelebihan SegWit yang dapat dirasakan secara langsung
1. Ukuran transaksi lebih kecil (terutama dalam satuan weight)
2. Fee untuk transaksi menjadi lebih murah

Kelebihan SegWit yang dapat dirasakan secara tidak langsung
1. Meningkatkan kapasitas transaksi dalam blok karena limit 1MB diubah menjadi 4 juta weight (satuan untuk menghitung kapasitas).
2. Meningkatkan maksimal transaksi per detik dari 7 TPS menjadi 12-20 TPS (estimasi kasar)
3. Menyelesaikan masalah Transaction Malleability, yaitu suatu bug yang bisa mengubah hash dari sebuah transaksi tanpa mengubah informasi dari isi transaksi.
4. Karena Transaction Malleability terselesaikan, pengembangan teknologi 2nd-layer/side-chain menjadi lebih mudah

Format alamat SegWit

1. Diawali dengan angka 3 (P2SH SegWit)
Kelebihan : Bisa dikenali oleh semua wallet/exchange
Kekurangan : Ukuran transaksi sedikit lebih besar dibandingkan Bech32

2. Diawali dengan kata bc1 (Bech32/Native SegWit)
Kelebihan : Ukuran transaksi paling kecil dibandingkan lainnya
Kekurangan : Tidak dikenali/didukung oleh semua wallet/exchange

Daftar dompet/wallet yang mendukung SegWit
Catatan : Semua dompet/wallet yang tidak memberikan private key/seed, user tidak memiliki kontrol penuh pada bitcoin yang dipunya atau platform di web tidak saya masukkan

Hardware Wallet
1. Trezor (https://trezor.io/)
2. Nano Ledger S (https://www.ledger.com)

Desktop
1. Bitcoin Core (https://bitcoin.org/en/download)
* Mendukung pembuatan alamat P2SH maupun Bech32
* Perlu download seluruh file blockchain (217GB saat thread ditulis)
* Metode backup : File wallet/dompet saja

2. Electrum (https://electrum.org/#download)
* Hanya mendukung pembuat alamat Bech32
* Hanya perlu download transaksi yang pernah dibuat/diterima saja yang ukurannya sangat kecil
* Metode backup : File wallet/dompet dan seed/mnemonic

3. Wasabi Wallet (https://www.wasabiwallet.io/)
* Hanya mendukung pembuat alamat Bech32
* Hanya perlu download transaksi yang pernah dibuat/diterima saja yang ukurannya sangat kecil
* Memiliki fitur CoinJoin untuk meningkatkan privasi user
* Metode backup : File wallet/dompet dan seed/mnemonic dengan password wallet

Mobile
1. Electrum (https://play.google.com/store/apps/details?id=org.electrum.electrum)
* Hanya mendukung pembuat alamat Bech32
* Metode backup : seed/mnemonic

2. Samourai Wallet (https://samouraiwallet.com/index.html)
* Mendukung pembuatan alamat P2SH maupun Bech32
* Metode backup : File wallet/dompet dan seed/mnemonic
* Memiliki banyak fitur untuk meningkatkan privasi
* Masih dalam versi aplha

Paper Wallet
1. https://segwitaddress.org
* Mendukung pembuatan alamat P2SH maupun Bech32

FAQ
Q: Format alamat SegWit yang sebaiknya saya pakai?
A: Format alamat yang diawali dengan angka 3 (P2SH SegWit)

Q: Wallet desktop apa yang sebaiknya saya pakai?
A: Electrum

Q: Wallet mobile apa yang sebaiknya saya pakai?
A: Samourai Wallet

Sumber/info lebih detail
https://transactionfee.info/charts/payments/segwit
http://charts.woobull.com/bitcoin-segwit-adoption/
https://en.bitcoin.it/wiki/Weight_units
https://bitcointechtalk.com/transaction-malleability-explained-b7e240236fc7
https://bitcoin.org/en/choose-your-wallet

---

Thread ini diarsipkan di : https://archive.fo/6cCUQ
Thread lainnya :
[INFO] Dandelion - protokol untuk menyembunyikan asal mula transaksi

Good initiative even though majority of newcomers don't know or care about wallet that they use, they even don't care if they use centralized wallet. My suggestion is promoting the main advantage of SegWit (that anyone would see) which is lower transaction fees (because it has lower transaction size/weight).

For desktop i agree Electrum is overall best-wallet. User can have full control while remain user-friendly, Electrum even support Tor (assuming you've set up Tor connection at default port). But i'm not sure about their Android wallet since it's crap compared to their desktop wallet.
I'd recommend Samourai Wallet which have very rich useful features/configuration even compared with desktop wallet. Especially their Stonewall features, even though i don't how secure/private is it in reality. However, it's still on alpha version.

P.S. Development & Technical Discussion section isn't suitable since you plan to help newcomers.


There are 2 types of SegWit address starts with prefix 3 and bc1. Also, SegWit is an upgrade/improvement for Bitcoin.

All balances, transactions and pending transactions are "stored" on all bitcoin nodes so you don't need to worry about that.

So all you need to backup is all of wallet.dat that you have and make sure your server is secure (such as strict firewall rules and add password to your RPC) and you place the backup on safe place.
You might want to backup whole blockchain and UTXO DB (blocks and chainstate folder) just in case when your storage drive is broken, so you can sync faster (and thus have less downtime).

Yes and No, because :
1. BTC and BCH use older/legacy address format (starting with 1 and 3)
2. BTC and BCH now have their own new address format (starting with bc1 and q...)

But since blockchair shows both coins (meaning you use older/legacy address format), the answer is Yes in your case.


No idea, i only can suggest use another wallet such as Electron Cash, Bitcoin ABC or Bitcoin Unlimited.


Your steps should be right, so IMO there's an issue with BTC.com wallet.

P.S. if you don't mind post that address, that would make identifying process easier.

AI has become buzzword and people think AI would solve anything, while in fact AI/ML need to be trained with lots of accurate data and lots of computational resources. Besides, detect and delete post with less than 75 characters only require simple programming logic such as if (this.length < 75) this.delete
Besides, there's weak correlation between character length and post quality.

What this forum need are less signature features for lower ranked member, higher merit requirement, forbid all bounty campaign or remove signature.

Basically because there's 2^160 possible address while AFAIK super computer only can generate about 2^32 address/second which means time needed for address collusion/bruteforce is 2^(160-32) seconds. CMIIW.


How? AFAIK you don't need blockchain to generate address, all you need is script/software which contain proper CSPRNG, base58 encoder/decoder and collections of cryptographic hash/signature (ECDSA, RIPEMD-160, SHA-256, etc) library.

The system of merit works. My example.

https://bitcointalk.org/index.php?topic=4686439.msg42288508#msg42288508
https://bitcointalk.org/index.php?topic=5029325.msg45717195#msg45717195
https://bitcointalk.org/index.php?topic=4980960.msg44928914#msg44928914

You only look at few sections, the system works very well on most section.


Users already do that on another thread, time to DYOR.

Edit : looks like OP intentionally ignore my post, even though he respond to all posts above and below me. Not surprising though.

I get your idea, but this could be abused easily/misused in many ways. Increasing merit requirement for some ranks, limiting signature features for few ranks and permanent ban for obvious merit abuse are far better and should be easier to be implemented.
Report button on merit page and hidden list of trusted member (which only can be seen by moderator/admin when see reports) should be better.

There are some free or/and open-source blockchain analyzer tool/software, but AFAIK most of them don't have complex feature/analysis. Search blockchain analyzer tool -news on Google should give what you need.
https://github.com/citp/BlockSci looks like is the most popular open-source block analyzer

Don't bother reinvent the wheel unless you're not satisfied with/can't find analysis method you want

There are few options including :
1. Change bitcoin default open port. Your ISP might block default Bitcoin Core port, whether it's intentional or not[a]
2. Make sure your Bitcoin Core comes from legitimate source
3. Check if your PC's firewall block connection made by Bitcoin Core or any software outside it's whitelist

But using VPN (or other forms of secure connection) is more convenient and could protect your privacy/anonymity.

a. https://www.ccn.com/isps-intentionally-blocking-bitcoin/

It's impossible since your idea requiring software/extension access to access current page that Google Chrome for Android access while there's no extension or source code for google chrome. Even if it's exist, it's annoying to switch between mobile and wi-fi connection anytime when you access Bitcoin related website.
Using proxy/VPN/Tor is easier and far more convenient and you could have better privacy/security with proper configuration.

Besides, what basis that makes you think using mobile data is safer

Bitcoin core (other client might do things differently) build and use UTXO database which stored on storage (not RAM) which makes transaction verification is faster. The UTXO database updated every time node receive transaction/block or create and broadcast transaction.
Besides, AFAIK most transaction can be verified in hundred millisecond.

There's no way any developer would think scan entire database just to get a data. Indexing, database balancing, sorting or/and separate database for linking obviously used in here.

If you're curious with UTXO size/count, you can check https://statoshi.info/dashboard/db/unspent-transaction-output-set

You don't need blockchain in this case, another P2P method such as BitTorrent or IPFS protocol with encryption should work just fine. Besides, blockchain is inefficient for such things mainly due to potential spam and scaling problem (unless you don't care people should run full nodes at low cost).

Alternatively you could use Steemit and Filecoin which already exist rather than make another one or see this thread (https://bitcointalk.org/index.php?topic=4554177.0) why blockchain is inefficient for such things