# How to know what STBU version you have

STBU token evolves, and as a part of this process, it is moving to the new, more compliant protocol,[ STV3](https://docs.stobox.io/products/stobox-4-beta/processes/stv3-protocol-and-data-rich-token-architecture). It is also called Stobox Token V3.

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The STBU tokens of the previous protocol, **STV2**, Stobox Token V2, have the following contract addresses.

**Ethereum:** [0xa6422e3e219ee6d4c1b18895275fe43556fd50ed](https://etherscan.io/token/0xa6422e3e219ee6d4c1b18895275fe43556fd50ed)

**Binance:** [0xb0c4080a8Fa7afa11a09473f3be14d44AF3f8743](https://bscscan.com/token/0xb0c4080a8Fa7afa11a09473f3be14d44AF3f8743)

**Polygon:** [0xcf403036bc139d30080d2cf0f5b48066f98191bb](https://polygonscan.com/token/0xcf403036bc139d30080d2cf0f5b48066f98191bb)

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The STBU tokens for the new protocol, **STV3**, are currently issued on a single network. [Six more to come](https://docs.stobox.io/products/stobox-4-beta/integrations/blockchains#supported-blockchains).

**Arbitrum:** [0x1cb9bD2c6E7F4A7DE3778547d46C8D4c22abC093](https://arbiscan.io/token/0x1cb9bd2c6e7f4a7de3778547d46c8d4c22abc093)

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#### How to see the token's contract address

In MetaMask, click the token and see its contract address. You may need to scroll down a bit.

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