The blockchain-carbon-accounting network is now live on Avalanche mainnet. You can use access it at emissions.opentaps.org to issue tokens of emissions audits from utilities bills, flights, travel, and shipping.
The first token for emissions from a flight was issued on Avalanche Mainnet:
The cost was 0.02 AVAX or $0.44. The energy and carbon emissions footprints of the Avalanche mainnet are also very small (see analysis.)