library(data.table) library(RSQLite) library(DBI) # NOTE: Also need lubridate package installed, but not loading it due to # it masking functions # WARNING: This code assumes that pre-fork bitcoin has been spent every day since the fork, # which is true up to March 31, 2022. If this code runs on later data, then will # have to pre-fill data.frames with dates bch.data.dir <- "" btc.data.dir <- "" # Input data directory here, with trailing "/" con.bch <- DBI::dbConnect(RSQLite::SQLite(), paste0(bch.data.dir, "tx-graph-node-indices.db")) con.btc <- DBI::dbConnect(RSQLite::SQLite(), paste0(btc.data.dir, "tx-graph-node-indices.db")) pre.fork.edgelist <- DBI::dbGetQuery(con.bch, "SELECT origin_index, destination_index FROM edgelist_intermediate_2 WHERE block_height <= 478558") # 478558 is last block height that BCH and BTC share a block pre.fork.utxo.set <- setdiff(pre.fork.edgelist$destination_index, pre.fork.edgelist$origin_index) DBI::dbWriteTable(con.bch, "pre_fork_utxo_set", data.frame(destination_index = pre.fork.utxo.set, stringsAsFactors = FALSE)) DBI::dbWriteTable(con.btc, "pre_fork_utxo_set", data.frame(destination_index = pre.fork.utxo.set, stringsAsFactors = FALSE)) # Need to do this operation for both the BCH and BTC databases pre.fork.utxo.set.value <- DBI::dbGetQuery(con.bch, 'SELECT destination_index, value FROM edgelist_intermediate_2 WHERE destination_index IN (SELECT destination_index FROM pre_fork_utxo_set)') setDT(pre.fork.utxo.set.value) pre.fork.bitcoin.supply <- 50 * length(0:209999) + 25 * length(210000:419999) + 12.5 * length(420000:478558) pre.fork.utxo.set.value[, sum(value)] / pre.fork.bitcoin.supply # [1] 0.99984 pre.fork.bitcoin.supply - pre.fork.utxo.set.value[, sum(value)] # [1] 2637.559 duplicated.destination_index <- unlist(pre.fork.utxo.set.value[duplicated(destination_index), .(destination_index)]) pre.fork.utxo.set.value <- pre.fork.utxo.set.value[ ! destination_index %in% duplicated.destination_index, ] # Removes the transactions that are coinbases of blocks 91722, 91812, 91842, 91880 # Since they are duplicated transaction hashes. See: # https://bitcoin.stackexchange.com/questions/40444/what-happens-when-two-txids-collide # https://github.com/bitcoin/bitcoin/commit/ab91bf39b7c11e9c86bb2043c24f0f377f1cf514 excluded.duplicate.tx.hashes.output.count <- 4 excluded.duplicate.tx.hashes.value <- 50 * 4 bch.spent.status <- DBI::dbGetQuery(con.bch, 'SELECT origin_index, block_height FROM edgelist_intermediate_1 WHERE origin_index IN (SELECT destination_index FROM pre_fork_utxo_set)') colnames(bch.spent.status) <- c("destination_index", "bch.spent.block_height") setDT(bch.spent.status) btc.spent.status <- DBI::dbGetQuery(con.btc, 'SELECT origin_index, block_height FROM edgelist_intermediate_1 WHERE origin_index IN (SELECT destination_index FROM pre_fork_utxo_set)') colnames(btc.spent.status) <- c("destination_index", "btc.spent.block_height") setDT(btc.spent.status) spent.status <- merge(pre.fork.utxo.set.value, bch.spent.status, all.x = TRUE) rm(pre.fork.utxo.set.value, bch.spent.status) spent.status <- merge(spent.status, btc.spent.status, all.x = TRUE) rm(btc.spent.status) bch.block.times <- readRDS(paste0(bch.data.dir, "block_times.rds")) bch.block.times[, block_time := as.POSIXct(block_time, origin = "1970-01-01", tz = "GMT")] colnames(bch.block.times) <- c("bch.spent.block_height", "bch.block_time") spent.status <- merge(spent.status, bch.block.times, all = TRUE, by = "bch.spent.block_height") # Note that due to all = TRUE this will get all blocks, # even if there are no target spent outputs within the block btc.block.times <- readRDS(paste0(btc.data.dir, "block_times.rds")) btc.block.times[, block_time := as.POSIXct(block_time, origin = "1970-01-01", tz = "GMT")] colnames(btc.block.times) <- c("btc.spent.block_height", "btc.block_time") spent.status <- merge(spent.status, btc.block.times, all = TRUE, by = "btc.spent.block_height") write.csv(spent.status, file = paste0(bch.data.dir, "pre-fork-BTC-BCH-spent_status.csv"), row.names = FALSE) spent.status[, bch.block_time.date := lubridate::date(bch.block_time)] spent.status[, btc.block_time.date := lubridate::date(btc.block_time)] # Column format below is: # {BTC spent status}{BCH spent status}.to.{BTC spent status}{BCH spent status} # u = unspent; s = spent spent.status[, ff.to.tf := as.Date(ifelse( ifelse(is.na(btc.block_time.date), Inf, btc.block_time.date) < ifelse(is.na(bch.block_time.date), Inf, bch.block_time.date), btc.block_time.date, rep(NA, .N)), origin = "1970-01-01")] spent.status[, ff.to.ft := as.Date(ifelse( ifelse(is.na(bch.block_time.date), Inf, bch.block_time.date) < ifelse(is.na(btc.block_time.date), Inf, btc.block_time.date), bch.block_time.date, rep(NA, .N)), origin = "1970-01-01")] spent.status[, ff.to.tt := as.Date(ifelse( ifelse(is.na(btc.block_time.date), Inf, btc.block_time.date) == ifelse(is.na(bch.block_time.date), Inf, bch.block_time.date), btc.block_time.date, rep(NA, .N)), origin = "1970-01-01")] spent.status[, tf.to.tt := as.Date(ifelse( (! is.na(ff.to.tf)) & ifelse(is.na(bch.block_time.date), Inf, bch.block_time.date) > ifelse(is.na(btc.block_time.date), Inf, btc.block_time.date), bch.block_time.date, rep(NA, .N)), origin = "1970-01-01")] spent.status[, ft.to.tt := as.Date(ifelse( (! is.na(ff.to.ft)) & ifelse(is.na(btc.block_time.date), Inf, btc.block_time.date) > ifelse(is.na(bch.block_time.date), Inf, bch.block_time.date), btc.block_time.date, rep(NA, .N)), origin = "1970-01-01")] ff.to.tf <- spent.status[ (! is.na(ff.to.tf)), .(value.ff.to.tf = sum(value, na.rm = TRUE), outputs.ff.to.tf = .N), by = ff.to.tf] names(ff.to.tf)[1] <- "block_time.date" ff.to.ft <- spent.status[ (! is.na(ff.to.ft)), .(value.ff.to.ft = sum(value, na.rm = TRUE), outputs.ff.to.ft = .N), by = ff.to.ft] names(ff.to.ft)[1] <- "block_time.date" ff.to.tt <- spent.status[ (! is.na(ff.to.tt)), .(value.ff.to.tt = sum(value, na.rm = TRUE), outputs.ff.to.tt = .N), by = ff.to.tt] names(ff.to.tt)[1] <- "block_time.date" tf.to.tt <- spent.status[ (! is.na(tf.to.tt)), .(value.tf.to.tt = sum(value, na.rm = TRUE), outputs.tf.to.tt = .N), by = tf.to.tt] names(tf.to.tt)[1] <- "block_time.date" ft.to.tt <- spent.status[ (! is.na(ft.to.tt)), .(value.ft.to.tt = sum(value, na.rm = TRUE), outputs.ft.to.tt = .N), by = ft.to.tt] names(ft.to.tt)[1] <- "block_time.date" state.trans.by.day <- data.table(block_time.date = sort(unique(lubridate::date(c(spent.status$bch.block_time, spent.status$btc.block_time))))) state.trans.by.day <- merge(state.trans.by.day, ff.to.tf, all = TRUE) state.trans.by.day <- merge(state.trans.by.day, ff.to.ft, all = TRUE) state.trans.by.day <- merge(state.trans.by.day, ff.to.tt, all = TRUE) state.trans.by.day <- merge(state.trans.by.day, tf.to.tt, all = TRUE) state.trans.by.day <- merge(state.trans.by.day, ft.to.tt, all = TRUE) state.trans.by.day[is.na(state.trans.by.day)] <- 0 spent.status.by.day <- data.table(block_time.date = sort(unique(lubridate::date(c(spent.status$bch.block_time, spent.status$btc.block_time)))), value.btc.unspent.bch.unspent = NA_real_, outputs.btc.unspent.bch.unspent = NA_integer_, value.btc.spent.bch.unspent = NA_real_, outputs.btc.spent.bch.unspent = NA_integer_, value.btc.unspent.bch.spent = NA_real_, outputs.btc.unspent.bch.spent = NA_integer_, value.btc.spent.bch.spent = NA_real_, outputs.btc.spent.bch.spent = NA_integer_) for (day.i in spent.status.by.day$block_time.date) { spent.status[, btc.spent := (btc.block_time.date <= day.i) & (! is.na(btc.block_time.date))] spent.status[, bch.spent := (bch.block_time.date <= day.i) & (! is.na(bch.block_time.date))] spent.status.by.day$value.btc.unspent.bch.unspent[spent.status.by.day$block_time.date == day.i] <- spent.status[ (! btc.spent) & (! bch.spent), sum(value, na.rm = TRUE)] spent.status.by.day$outputs.btc.unspent.bch.unspent[spent.status.by.day$block_time.date == day.i] <- spent.status[ (! btc.spent) & (! bch.spent), .N] spent.status.by.day$value.btc.spent.bch.unspent[spent.status.by.day$block_time.date == day.i] <- spent.status[ ( btc.spent) & (! bch.spent), sum(value, na.rm = TRUE)] spent.status.by.day$outputs.btc.spent.bch.unspent[spent.status.by.day$block_time.date == day.i] <- spent.status[ ( btc.spent) & (! bch.spent), .N] spent.status.by.day$value.btc.unspent.bch.spent[spent.status.by.day$block_time.date == day.i] <- spent.status[ (! btc.spent) & ( bch.spent), sum(value, na.rm = TRUE)] spent.status.by.day$outputs.btc.unspent.bch.spent[spent.status.by.day$block_time.date == day.i] <- spent.status[ (! btc.spent) & ( bch.spent), .N] spent.status.by.day$value.btc.spent.bch.spent[spent.status.by.day$block_time.date == day.i] <- spent.status[ ( btc.spent) & ( bch.spent), sum(value, na.rm = TRUE)] spent.status.by.day$outputs.btc.spent.bch.spent[spent.status.by.day$block_time.date == day.i] <- spent.status[ ( btc.spent) & ( bch.spent), .N] cat(base::date(), which(spent.status.by.day$block_time.date == day.i), "of", nrow(spent.status.by.day),"\n") } # Fairly inefficient implementation, but gets the job done ## Data validity check below value.row.sum.check <- rowSums(spent.status.by.day[, .( value.btc.unspent.bch.unspent, value.btc.spent.bch.unspent, value.btc.unspent.bch.spent, value.btc.spent.bch.spent) ]) stopifnot(max(value.row.sum.check) - min(value.row.sum.check) < 0.000001) # Some small error allowed for floating point arithmetic inaccuracy outputs.row.sum.check <- rowSums(spent.status.by.day[, .( outputs.btc.unspent.bch.unspent, outputs.btc.spent.bch.unspent, outputs.btc.unspent.bch.spent, outputs.btc.spent.bch.spent) ]) stopifnot(max(outputs.row.sum.check) - min(outputs.row.sum.check) == 0) saveRDS(spent.status.by.day, file = paste0(bch.data.dir, "spent_status_by_day.rds")) saveRDS(state.trans.by.day, file = paste0(bch.data.dir, "state_trans_by_day.rds")) write.csv(spent.status.by.day, file = paste0(bch.data.dir, "spent_status_by_day.csv"), row.names = FALSE) write.csv(state.trans.by.day, file = paste0(bch.data.dir, "state_trans_by_day.csv"), row.names = FALSE)