• if a transaction was abandoned then show a different icon in the transaction view to indicate it was abandoned. Also update the transaction status in the details dialog.

• We can process the orphans after the CORRAL is released. This reduces the amount of time we need to pause txadmision during heavy transaction loads.

• as we do for the txInQ we have to push the txOrphanQ onto the txDeferQ after we reset the incomingConficts filter.

• This feature would allow, for example, an exhange to limit the amount of NEX it would consider as a possible instantly confirmed transaction, thereby limiting their risk that a miner would be tempted to insert a double spend into a block.

the native implementation used to call java's secureRandom because the full node used openSSL (not included in libnexa) for secure random number generation. However, openSSL was replaced a long time ago with a native implementation based on /dev/urandom etc. At the same time, calling from the native out to java has always been an esoteric thing to do, and recently its causing failures on many platforms according to the google play automated testing. So remove the libnexa call out to java for secure random numbers, and replace with the same random generation used in the full node wallet.

google play store's test crash happens during the initialization of the callout to java in some platforms: #00 pc 0x000000000005d8e4 /apex/com.android.runtime/lib64/bionic/libc.so (abort+164) #01 pc 0x0000000000771c60 /apex/com.android.art/lib64/libart.so (art::Runtime::Abort(char const*)+904) #02 pc 0x00000000000357d0 /apex/com.android.art/lib64/libbase.so (android::base::SetAborter(std::__1::function<void (char const*)>&&)::$_0::__invoke(char const*)+80) #03 pc 0x0000000000034d58 /apex/com.android.art/lib64/libbase.so (android::base::LogMessage::~LogMessage()+352) #04 pc 0x00000000003ee70c /apex/com.android.art/lib64/libart.so (art::JavaVMExt::JniAbort(char const*, char const*)+3540) #05 pc 0x000000000003f394 /data/app/~~4YZbBJfh4Q31VCv2jBR5tw==/info.bitcoinunlimited.www.wally-LSMj9eimuyzomZFIYY239g==/split_config.arm64_v8a.apk!libnexalight.so (_JNIEnv::CallStaticVoidMethod(_jclass*, _jmethodID*, ...)+96) (BuildId: 8e8e715b5a2060cdaa5a5d45ba3a38a69fc70b61) #06 pc 0x000000000003dac4 /data/app/~~4YZbBJfh4Q31VCv2jBR5tw==/info.bitcoinunlimited.www.wally-LSMj9eimuyzomZFIYY239g==/split_config.arm64_v8a.apk!libnexalight.so (GetRandBytes(unsigned char*, int)+92) (BuildId: 8e8e715b5a2060cdaa5a5d45ba3a38a69fc70b61) #07 pc 0x00000000000775d8 /data/app/~~4YZbBJfh4Q31VCv2jBR5tw==/info.bitcoinunlimited.www.wally-LSMj9eimuyzomZFIYY239g==/split_config.arm64_v8a.apk!libnexalight.so (ECC_Start()+128) (BuildId: 8e8e715b5a2060cdaa5a5d45ba3a38a69fc70b61) #08 pc 0x0000000000035768 /data/app/~~4YZbBJfh4Q31VCv2jBR5tw==/info.bitcoinunlimited.www.wally-LSMj9eimuyzomZFIYY239g==/split_config.arm64_v8a.apk!libnexalight.so (BuildId: 8e8e715b5a2060cdaa5a5d45ba3a38a69fc70b61) #09 pc 0x000000000003d930 /data/app/~~4YZbBJfh4Q31VCv2jBR5tw==/info.bitcoinunlimited.www.wally-LSMj9eimuyzomZFIYY239g==/split_config.arm64_v8a.apk!libnexalight.so (Java_org_nexa_libnexakotlin_Native_initializeLibNexa+192) (BuildId: 8e8e715b5a2060cdaa5a5d45ba3a38a69fc70b61)

For QA test convenience it would be useful if abandontransaction searched in all locations for the transaction that should be abandoned rather than just the txpool. Without this, rewind tests that use invalidateblock need to wait for the tx to reenter the txpool before calling abandontransaction if the goal is to create a fork that is missing some transactions.

Workaround: Wait until the tx you want to abandon enters the txpool using either getrawtxpool or gettxpoolinfo.size depending on whether you know the expected txpool size.

• Use the global variable MAX_PUBKEYS_PER_MULTISIG where applicable.