Collaborative block producers selling blockspace at the current fair market price nostr:nevent1qqsx8aw7tzwuv54tmz3ggfepj48g86gaqk477rkhx8lwfe5gvhand9cpp4mhxue69uhkummn9ekx7mqzyr4tpe6k6v4cp0x5vneas39cqspsxp66z04tcdve5a3vntr6hy057qcyqqqqqqgyvd3z8