Bitcoin is a network that is proven to be stable, but if you want applications on top of Blockchains you have to play by the rules of the system. For notary use cases (for example), where you would store a document hash on the chain, it might not be beneficial to charge a transaction fee for issuing a document, since you would want to encourage your users to create content and perhaps charge people who want to verify the information instead.
Let's say you build a mining pool that accepts zero transaction fee that owns and maintains a certain percentage (let's say 0.1%) of the global Bitcoin mining power. Let's also assume the mining costs (energy, hardware depreciation, etc.) are not an issue (for now).
- Can a transaction that offers zero fees target this mining pool? (I assume yes, through a tag in metadata perhaps)
- Could this mining pool filter staged transactions by this tag?
- Can the mining pool, if it owns 0.1% of the global mining power guarantee the confirmation of the transaction within a certain period of time? (1hr, 10 hrs, 1 day, 1 month, 1 year?)
- Is there any example out there that do something similar and use an external mechanism how to compensate mining costs?