Hello!
Please more description
you want sql based solution?
i can use mssql, sqllite, c#.
or you want blockchain based database?
i cam fork bitshares for this.
I have 20 year exp on development, use, and optimize database of over 100GB size, over 1000 tables.
MS SQL Server , Oracle 9-12i, , PostgreSQL, MySQL
High degree of Information Technologies In Economic.
Strong ERP, Accounting coding exp.
My last project of this week, use mssql triggers and stored procedures:
https://www.freelancer.com/u/AntonBliznetc/portfolio/SQL-MSSQL-Stored-Procedures-coding-5008989