This should be done before the branch-off, and can be done by anyone, as the steps are easily reproducible and reviewable.

#### Useful skills:

* Building Bitcoin Core
* Follow the documentation: https://github.com/bitcoin/bitcoin/blob/master/doc/release-process.md#before-branch-off

#### Want to work on this issue?

For guidance on contributing, please read [CONTRIBUTING.md](https://github.com/bitcoin/bitcoin/blob/master/CONTRIBUTING.md) before opening your pull request.

consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].min_activation_height = 0; 
        
        HashWriter h{};
        h << consensus.signet_challenge;
        uint256 hash = h.GetHash();
        memcpy(pchMessageStart, hash.begin(), 4);
        nDefaultPort = 38333;
        nPruneAfterHeight = 1000;
        genesis = CreateGenesisBlock(1598918400, 52613770, 0x1e0377ae, 1, 50 * COIN);
        consensus.hashGenesisBlock = genesis.GetHash();
        assert(consensus.hashGenesisBlock == uint256S("0x00000008819873e925422c1ff0f99f7cc9bbb232af63a077a480a3633bee1ef6"));
        assert(genesis.hashMerkleRoot == uint256S("0x4a5e1e4baab89f3a32518a88c31bc87f618f76673e2cc77ab2127b7afdeda33b"));
        vFixedSeeds.clear();
        base58Prefixes[PUBKEY_ADDRESS] = std::vector<unsigned char>(1,111);
        base58Prefixes[SCRIPT_ADDRESS] = std::vector<unsigned char>(1,196);
        base58Prefixes[SECRET_KEY] =     std::vector<unsigned char>(1,239);
        base58Prefixes[EXT_PUBLIC_KEY] = {0x04, 0x35, 0x87, 0xCF};
        base58Prefixes[EXT_SECRET_KEY] = {0x04, 0x35, 0x83, 0x94};
        bech32_hrp = "tb";
        fDefaultConsistencyChecks = false;
        fRequireStandard = true;
        m_is_test_chain = true;
        m_is_mockable_chain = false;
    }
};
/**
 * Regression test: intended for private networks only. Has minimal difficulty to ensure that
 * blocks can be found instantly.
 */
class CRegTestParams : public CChainParams {