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Refactored subscription method Subscription methods including logs and events are processed under the hood under the hood to properly handle deletion of blocks and logs in the skip block, chain reorganization, block / log backfill, ethereumjs- It was rewritten to use blockstream. . In addition, the logic for retrieving historical logs has been separated from future event subscriptions. For more information, see the subscribeAsync () and getLogsAsync () functions. Appropriate collective filling verification was carried out. To correctly validate the batch fill, run bulk fill and track all intermediate state changes (that is, balance change / permitted change) that may affect subsequent fills "poor "VM was implemented. This allows you to correctly simulate what happens when bulk filling is done in the chain and informs the caller whether batch filling can fail without wasting gas.

• Explosion log: Before leaving the explosion site, the blast worker completes the "blast record" and signs to confirm that all information related to the explosion is correctly recorded in the blast log. If necessary, blast logs will be official documents for regulatory, legal and / or public review. Typical blast log information includes depth, diameter, load, occlusion, explosion distribution, delay sequence, delay pattern sketch, distance to the nearest structure or residence, ground vibration and jet seismic data I will. An example of blast log is shown in Appendix A.