Ordinals advocate’s ‘DOG Mode’ client reopens dispute over Bitcoin block space policy
Leonidas’s alternative Bitcoin client would loosen Core’s relay limits for Ordinals and Runes, testing miner and node consensus without a fork.
A prominent advocate for Bitcoin’s Ordinals and Runes ecosystems has proposed an alternative software client designed to bypass transaction-relay restrictions imposed by Bitcoin Core, reigniting a long-running dispute over how much non-monetary data the network’s dominant node software should tolerate.
Leonidas, a co-founder of the Runestone project, unveiled the proposal, dubbed DOG Mode, in a post on X on Friday. The plan does not seek to alter Bitcoin’s consensus rules or trigger a hard fork; instead, it would change which valid transactions a node chooses to relay across the network, leaving the question of whether they are ultimately confirmed to miners.
Loosening the relay rules
Under the proposal, DOG Mode would raise the maximum relayed transaction size from 400,000 weight units to 3.9 million, and cut Bitcoin Core’s dust threshold to a single satoshi. Leonidas argues the changes would remove friction currently affecting transactions tied to Ordinals inscriptions and Runes tokens, two protocols that embed additional data into Bitcoin transactions and have periodically strained the network’s fee market and node resource requirements since their emergence.
He has claimed that a lower dust limit could eliminate what he describes as unnecessary “padding” attached to Ordinals inscriptions and Runes unspent transaction outputs, potentially freeing an estimated $25 million worth of bitcoin currently locked up to satisfy existing dust rules. That figure has not been independently verified and should be treated as Leonidas’s own estimate pending further scrutiny.
A narrower approach than rival clients
Leonidas has positioned DOG Mode as a lighter-touch alternative to Bitcoin Knots, the client favoured by miners who prefer stricter filtering of non-financial data, which he says involves more extensive code changes. He has also distinguished it from formal proposals such as BIP-110, which would require a network-wide consensus upgrade delivered through a fork.
Because DOG Mode operates purely at the relay-policy layer, its adoption would depend on voluntary uptake by node operators and miners rather than a coordinated protocol change. Leonidas is now seeking developers, miners and users willing to contribute to and run the client, framing broader adoption as the mechanism by which the policy change could take hold in practice.
Why it matters for institutional Bitcoin exposure
For UK and European institutions that have expanded bitcoin custody and exchange-traded product exposure over the past year, disputes over relay policy carry indirect but real relevance. Fragmentation between node implementations affects mempool behaviour, fee estimation and the reliability of transaction propagation — all factors custodians and market-makers monitor when sizing operational risk.
The proposal also underscores a recurring governance tension within Bitcoin’s development community: without a formal consensus mechanism, competing node software effectively allows different constituencies — miners, exchanges, application developers — to express preferences about what kind of network Bitcoin should be, from a narrowly monetary settlement layer to a broader data-bearing platform. DOG Mode’s success or failure will likely hinge on whether miners find it commercially attractive to include the additional transaction types it would make relayable.
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