Current version [3.1]

Ethereum Mainnet:

• ERC1155 Token: 0x5cbeb7A0df7Ed85D82a472FD56d81ed550f3Ea95
• Validator: 0x170511f95560A1F280c29026f73a9cD6a4bA8ab0

Sepolia:

• ERC1155 Token: 0xb52ED2Dc8EBD49877De57De3f454Fd71b75bc1fD
• Validator: 0xAAA7FDc1A573965a2eD47Ab154332b6b55098008

Deprecated [3.0]

Ethereum Mainnet:

• ERC1155 Token: 0xd8a38b46d8cf9813c7c9233b844dd0ec7d7e8750
• Validator: 0x6fA2Ee5C9841163E88c85a40B70a90FCD5FBB68b

Legacy [2.0]

Ethereum Mainnet:

• ERC721 Token: 0x3903525e5c6cec55d4d38060c3edf05068a7a8d1

Prehistoric [1.0]

• ERC721 Token: 0x338e48afa8F749314eC3a7b417222929f1a2754E
  (yes, we minted our first token and performed the first transaction in June 2018!)