1. Beam documentation. https://documentation.beam.mw/
2. Grin documentation. https://docs.grin.mw/wiki/transactions/contracts/
3. Mwc documentation. https://www.mwc.mw/docs
4. Solving unconfirmed bitcoin transactions in electrum. https://data-dive.com/unconfirmed-bitcoin-transactions-electrum
5. Lecture Notes in Computer Science;M Abdalla,2002