United Arab Emirates Dirham

Armenian Dram

Argentine Peso

Australian Dollar

Bosnia and Herzegovina Convertible Mark

Bitcoin Cash

Bangladeshi Taka

Bahraini Dinar

Bits

Bermudian Dollar

Binance Coin

Brazil Real

Bitcoin

Canadian Dollar

Swiss Franc

Chilean Peso

Chinese Yuan

Colombian Peso

Costa Rican Colón

Czech Koruna

Danish Krone

Dominican Peso

Polkadot

Ether

Euro

British Pound Sterling

Georgian Lari

Guatemalan Quetzal

Hong Kong Dollar

Honduran Lempira

Hungarian Forint

Indonesian Rupiah

Israeli New Shekel

Indian Rupee

Japanese Yen

Kenyan Shilling

South Korean Won

Kuwaiti Dinar

Lebanese Pound

Chainlink

Sri Lankan Rupee

Litecoin

Burmese Kyat

Mexican Peso

Malaysian Ringgit

Nigerian Naira

Norwegian Krone

New Zealand Dollar

Peruvian Sol

Philippine Peso

Pakistani Rupee

Polish Zloty

Romanian Leu

Russian Ruble

Saudi Riyal

Satoshi

Swedish Krona

Singapore Dollar

Salvadoran Colón

Thai Baht

Turkish Lira

New Taiwan Dollar

Ukrainian hryvnia

US Dollar

Venezuelan bolívar fuerte

Vietnamese đồng

Silver - Troy Ounce

Gold - Troy Ounce

IMF Special Drawing Rights

Lumens

Yearn.finance

South African Rand

Zambian Kwacha

SIREN is a distributed protocol for creating, trading, and redeeming fully-collateralized options contracts for any ERC-20 token on Ethereum.

About SIREN
Options are a financial primitive from which one can build many different more complex financial instruments. At their core, options give a trader the choice to buy or sell an asset at a predetermined price at a known time in the future. This is useful for protecting one's self (also known as hedging) against possible price changes in the asset, as well as speculating on these price changes.

Core Protocol Mechanics
SIREN uses a fully-collateralized approach to writing options that doesn’t require any oracles to function. A single MarketsRegistry contract creates and coordinates individual markets. Once a Market contract is created anyone can interact with it in a permissionless manner. The solvency of a position is ensured at all times by the collateral locked in the smart contract.

With SIREN, both the long and short side of the contract are tokenized. The buyer’s side (bToken) gives the holder the right to purchase or sell the underlying asset at a predetermined strike priceThe seller’s/writer’s side (wToken) allows the holder to withdraw the collateral (if the option was not exercised) or withdraw the exercise payment (if the option was exercised) from the contract after expiration.

When a trader buys a put the on-chain token amount is multiplied by the strike. For example, a 1 WBTC $20K PUT will result in 20,000 bTokens. For the same reason, a put is just a reversed-assets call (e.g. a WBTC/USDC put is actually a USDC/WBTC call).​

Tokenizing both sides of the contract allows SIREN to create secondary markets for both the long and short exposure. Under such a design in order to become a writer one purchases a wToken from the SirenSwap AMM (see below). A writer can also unwind their short exposure by selling the wToken back to the AMM. This streamlines the write-side mechanics by reducing it to essentially purchasing the underlying collateral at discount — as opposed to a typical design where the writer mints long tokens and has to then sell them in order to realize the premium.

SirenSwap AMM
Bootstrapping liquidity is core to creating a thriving market. Options are notoriously difficult when it comes to that. Not only does liquidity get fractured by combination of strike prices and expirations, it also requires sophistication on the part of liquidity providers in order to ensure fair and sustainable pricing.

To ensure liquidity on day 1 the SIREN protocol utilizes a custom SirenSwap AMM that uses a novel combination of a constant-product bonding curve and options minting to trade both bTokens and wTokens. Notably, the AMM doesn’t require any asset in the pool other than bTokens/wTokens in order to trade them against the collateral asset (e.g. WBTC). This increases LP capital efficiency and provides other benefits that we’ll expand on in further posts.

The SIREN core team believes that in these early days of Ethereum and DeFi less is more, so they designed SirenSwap to be a model-less market maker. This means there is no complex on-chain pricing formula nor oracle feed required in order for it to function. This makes it easy for anyone to become an LP to potentially earn trading fees.

Siren

A list of the top {coinName} markets across all crypto exchanges based on the highest 24h trading volume, with their current price.

A list of the top {coinName} markets across all crypto exchanges based on the highest 24h trading volume, with their current price, filter the pair and see unconverted data.

{base} to {target} Conversion Table

{base} to {target} Price Chart

{name} Price Chart

{name} Historical Data

{name} ({symbol}) financial chart designed for detailed analysis , comparison and more.

{name} ({symbol}) Advanced chart | Coinz.com

{name} to {quoteName} converter - Easily convert {symbol} to {quote} with our free currency convertor

Convert {symbol} to {quote} - {name} to {quoteName} | Coinz.com

Find the latest {name} forecasts from all around the world on our {name} forecasts section.

{name} Forecasts | Coinz.com

View historical {name} price data going back to the start of the cryptocurrency in daily, weekly, or monthly intervals.

{name} ({symbol}) - Historical Data | Coinz.com

{name} ({symbol}) trading pairs across all cryptocurrency exchanges. Check out live rates, prices, and volumes on top crypto exchanges to trade.

{name} ({symbol}) Exchange Markets by Trading Volume | Coinz.com

Our {name} news section keeps you up-to-date with the latest and most relevant {symbol} news from around the world.

{name} ({symbol}) News | Coinz.com

Live {name} ({symbol}) Real-Time Price, Chart, key metrics, tools and more. All you need to know about {name}.

{name} ({symbol}) Price, Chart & Marketcap | Coinz.com

SI	USD
0.1	0.00045086612
1	0.00450866129
2	0.00901732259
5	0.02254330648
10	0.04508661297
20	0.09017322595
50	0.22543306488
100	0.45086612976
1000	4.51

USD	SI
0.1	22.18
1	221.80
2	443.59
5	1,108.98
10	2,217.95
20	4,435.91
50	11,089.77
100	22,179.53
1000	221,795.33

Siren Converter

SI to USD Price Chart

Price Performance

Price Performance

SI to USD Conversion Table

Popular Conversions