> For the complete documentation index, see [llms.txt](https://bitrexe.gitbook.io/docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://bitrexe.gitbook.io/docs/what-is-bitrexe/bitcoin-layer-2/bitrexe-compares-with-other-bitcoin-layers.md).

# BitRexe compares with other Bitcoin Layers

**Overall Competitive Landscape**

<table><thead><tr><th width="172">\</th><th>BitRexe</th><th width="150">RSK</th><th width="117">RGB</th><th>Stacks</th><th>Inscription</th></tr></thead><tbody><tr><td>Security</td><td><strong>Hashrate Reusing</strong></td><td><strong>Merged Mining</strong> Restrict Block Interval as BTC </td><td><strong>Client-Side Validation</strong><br>Insecure</td><td><strong>PoX</strong><br>Insecure</td><td>n/a</td></tr><tr><td>Smart Contract Paralleization</td><td><p>PREDA</p><p>/EVM</p></td><td>n/a </td><td>n/a </td><td>n/a </td><td>n/a</td></tr><tr><td>Turing-Complete Contracts </td><td><p>PREDA</p><p>/EVM</p></td><td>Solidity/EVM </td><td><mark style="color:red;">n/a</mark> </td><td><mark style="color:red;">n/a</mark> </td><td>n/a</td></tr><tr><td>User-defined States</td><td><p>PREDA</p><p>/EVM</p></td><td>Solidity/EVM </td><td>Simplicity</td><td>Clarity</td><td>Yes</td></tr><tr><td>Token/NFT issuing</td><td>Yes</td><td>Yes</td><td>Yes</td><td>Yes</td><td>Yes</td></tr><tr><td>First-class Assets</td><td>Move Schematic</td><td> n/a</td><td>n/a</td><td>n/a</td><td>n/a</td></tr></tbody></table>

**Performance compares with merge mining project Rootstock**

| Parameter                                 | Bitcoin               | Rootstock                                                                         | BitRexe                                                                                                                        |
| ----------------------------------------- | --------------------- | --------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------ |
| Average block confirmation time           | 10 minutes            | 30 seconds (miners can lower it to 15                                             | Adjustable according to block interval                                                                                         |
| Suggested confirmation time for exchanges | 30 minutes (3 blocks) | 60 minutes (120 blocks) with current merge-mining hash rate (40%).                | Not determined yet                                                                                                             |
| Max. transactions per second              | 7 tps                 | 10 tps (external transactions, as of January 2019) 20 tps (internal transactions) | <mark style="color:green;background-color:orange;">**+200,000**</mark> tps on Uniswap V2 backtesting 2 years data on 16 shards |
| Per transaction cost                      | $3-60                 | \~$0.4                                                                            | \~$0..01                                                                                                                       |