HIP-991 Permissionless revenue-generating Topic Ids for Topic Operators

[SimiHunjan]

Problem

HIP-991 introduces new properties for topics.

HIP: https://hips.hedera.com/hip/hip-991

These topic properties include:

  /**
    * Access control for update/delete of custom fees. Null if there is no key.
    */
  Key fee_schedule_key = 10;

  /**
    * If the transaction contains a signer from this list, no custom fees are applied.
    */
  repeated Key fee_exempt_key_list = 11;

  /*
   * The custom fee to be assessed during a message submission to this topic
   */
  repeated FixedCustomFee custom_fees = 12;

The explorer needs to expose these properties for topics when the mirror node API supports them.

Mirror Node Issue: https://github.com/hashgraph/hedera-mirror-node/issues/9566

There also new transaction properties:

  /**
   * The account of the fee payer
   */
  AccountID account_id = 1;
  
  /**
    * The maximum fees that the user is willing to pay for the message.
    */
  repeated FixedFee fees = 2;

Mirror Node issue to track: https://github.com/hashgraph/hedera-mirror-node/issues/10311

Solution

Update UI to expose the new data about topics and topic transactions when supported in the mirror node APIs.

Alternatives

No response

[SimiHunjan]

hiero-ledger/hiero-mirror-node#9566
hiero-ledger/hiero-mirror-node#10311