Logs

The Event Log API was designed to provide an alternative to the native eth_getLogs.

Below are the list of supported filter parameters:

  • fromBlock, toBlock, address

  • topic0, topic1, topic2, topic3 (32 Bytes per topic)

  • topic0_1_opr (and|or between topic0 & topic1), topic1_2_opr (and|or between topic1 & topic2), topic2_3_opr (and|or between topic2 & topic3), topic0_2_opr (and|or between topic0 & topic2), topic0_3_opr (and|or between topic0 & topic3), topic1_3_opr (and|or between topic1 & topic3)

Some parameters to take note of 📝

  • FromBlock & ToBlock accepts the blocknumber (integer, NOT hex) or 'latest' (earliest & pending is NOT supported yet)

  • Topic Operator (opr) choices are either 'and' or 'or' and are restricted to the above choices only

  • FromBlock & ToBlock parameters are required

  • An address and/or topic(X) parameters are required, when multiple topic(X) parameters are used the topicX_X_opr (and|or operator) is also required

Sample Log API Queries

Get Event Logs from block number 23089831 to 23090831, where log address = 0x0f2B5005E5865AC67599b0777Dc5bc4733a97B22and topic[0] = 0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef

https://api-testnet.bttcscan.com/api
   ?module=logs
   &action=getLogs
   &fromBlock=23089831
   &toBlock=23090831
   &address=0x0f2B5005E5865AC67599b0777Dc5bc4733a97B22
   &topic0=0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef
   &apikey=YourApiKeyToken

Try this endpoint in your browser 🔗

Get Event Logs from block number 23090831 to block 13387473, where log address = 0x8d4cbe791112da3fce6feaf67cae4a05e6097cdf, topic[0] = 0x8c5be1e5ebec7d5bd14f71427d1e84f3dd0314c0f7b2291e5b200ac8c7c3b925 'AND' topic[1] = 0x000000000000000000000000b06649e2d93d33a43e98f5318190bd5dfe0532ed

https://api-testnet.bttcscan.com/api
   ?module=logs
   &action=getLogs
   &fromBlock=23089831
   &toBlock=23090831
   &address=0x0f2B5005E5865AC67599b0777Dc5bc4733a97B22
   &topic0=0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef
   &topic0_1_opr=and
   &topic1=0x000000000000000000000000b06649e2d93d33a43e98f5318190bd5dfe0532ed
   &apikey=YourApiKeyToken

Try this endpoint in your browser 🔗

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