SELECT

'arbitrum' as blockchain,

'ETH' as symbol,

block_timestamp,

tx_hash,

tx_fee

FROM arbitrum.core.fact_transactions

UNION

SELECT

'avalanche' as blockchain,

'AVAX' as symbol,

block_timestamp,

tx_hash,

tx_fee

FROM avalanche.core.fact_transactions

UNION

SELECT

'base' as blockchain,

'ETH' as symbol,

block_timestamp,

tx_hash,

tx_fee

FROM base.core.fact_transactions

UNION

SELECT

'binance' as blockchain,

'BNB' as symbol,

block_timestamp,

tx_hash,

tx_fee

FROM bsc.core.fact_transactions

UNION

SELECT

'ethereum' as blockchain,

'ETH' as symbol,