Comments (1)
To start, Monero already has an infinitely growing set of nullifiers/linking tags/key images.
I am against ever segregating Monero's privacy set, along with making old outputs unspendable (not proposed here, yet another potential 'solution')
One possibility may be the following:
- We define a sparse merkle tree (or bloom filter, if that actually would work here which I'd have to check) to store the last year's linking tags
- We define a list of all the SMT roots
- Users prove their linking tag isn't present in any of the SMTs
This reduces node's storage of the set of linking tags (which is part of the state and not prunable) to the last year's worth. This does require wallets to create several proofs (which could be folded with an IVC like Nova to effectively be one proof) and have access to a node with the full set still in state to get the necessary proving data.
I don't believe this is a worthwhile trade-off, as I'm not personally too concerned about this state growth aspect, yet it's good to start accumulating ideas and noting options.
from research-lab.
Related Issues (20)
- Exploring Trustless zk-SNARKs for Monero's payment protocol HOT 107
- Bulletproofs++ HOT 2
- Investigate possibility of reducing 10-blocks lock HOT 19
- Remove the burning bug as a class of attack with a modified shared key definition HOT 2
- Remove Extra Coinbase Locktime HOT 5
- Consider Switch commitments for future supply security HOT 29
- Radical idea for forward secrecy and instant wallet sync HOT 13
- Flashproofs
- Coinbase Consolidation Tx Type HOT 8
- Avoid selecting coinbase outputs as decoys HOT 2
- Scale the blockchain with recursive ZK proofs HOT 2
- Porting Utreexo to Monero HOT 7
- increasing uniformity of number of inputs/outputs
- Class Group-based ZK SNARKs
- Add scripting to Monero via the specification of R1CS circuits HOT 14
- based monero address decentralized IP address, Abolish ipv4 and ipv6 HOT 8
- potential measures against a black marble attack HOT 29
- How monero works HOT 1
- Catalogue of Monero decoy selection algorithms HOT 7
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from research-lab.