--- title: Is Dogecoin quantum-safe? chain: Dogecoin ticker: DOGE hardy_score: 11 rank: 21 of 23 tier: "5: Exposed" url: "https://hardyindex.com/chains/dogecoin" updated: 2026-08-12 methodology_version: 1.1 --- # Is Dogecoin quantum-safe? **Hardy Score 11.0 / 100. Rank 21 of 23. Tier 5: Exposed. As of 12 August 2026.** No. Dogecoin is derived from Bitcoin's codebase and signs with ECDSA on the secp256k1 curve, which a sufficiently large quantum computer would break. We found no published post-quantum roadmap, named replacement scheme or research programme for Dogecoin at the time of writing. Dogecoin's position is harder than Bitcoin's in one specific respect and easier in another. Harder, because the substantial research effort now going into Bitcoin's post-quantum proposals has no Dogecoin equivalent, so Dogecoin has neither a specification nor an activation debate. Easier, because Dogecoin shares Bitcoin's architecture closely enough that work done for Bitcoin, such as the output types proposed in BIP-360, could in principle be adapted rather than designed from scratch. > This is a security-readiness assessment, not investment advice. ## Summary A Bitcoin-derived chain using ECDSA on secp256k1, with no published post-quantum roadmap and the same governance difficulty Bitcoin faces without the same research effort. ## Where we are making a judgement call Tier 5 records that Dogecoin's mainnet signatures are quantum-vulnerable and that no post-quantum position has been published, and nothing beyond that. Dogecoin also inherits Bitcoin's governance difficulty without Bitcoin's research effort, which is why its migration score sits near the floor. A published proposal would move this row. ## Score breakdown | # | Dimension | Score | Weight | Contribution | |---:|---|---:|---:|---:| | 1 | Signature scheme | 0/10 | 30% | 0.0 | | 2 | Deployment stage | 1/10 | 25% | 2.5 | | 3 | NIST alignment | 0/10 | 15% | 0.0 | | 4 | Migration path | 1/10 | 15% | 1.5 | | 5 | Exposure | 4/10 | 10% | 4.0 | | 6 | Verification | 6/10 | 5% | 3.0 | | | **Hardy Score** | | | **11.0** | ### 1. Signature scheme: 0/10 Dogecoin uses ECDSA on secp256k1, inherited from the Bitcoin codebase. Nothing post-quantum protects DOGE on mainnet. Source: https://github.com/dogecoin/dogecoin ### 2. Deployment stage: 1/10 Tier 5: Exposed. Dogecoin signs with ECDSA on secp256k1 and no proposal, roadmap or research programme specific to Dogecoin was found: quantum-vulnerable signatures with no public post-quantum plan. Source: https://github.com/dogecoin/dogecoin ### 3. NIST alignment: 0/10 No post-quantum scheme has been named or proposed for Dogecoin, so there is nothing to assess against a NIST standard. Source: https://csrc.nist.gov/pubs/fips/205/final ### 4. Migration path: 1/10 Dogecoin faces Bitcoin's migration problem, which is that coins behind exposed keys cannot be moved without their owners acting, and it faces that problem without Bitcoin's active specification work. Its close architectural similarity to Bitcoin means future Bitcoin solutions could be adapted, which is why this is not zero. Source: https://github.com/dogecoin/dogecoin ### 5. Exposure: 4/10 Dogecoin uses the UTXO model with addresses derived from public key hashes, so coins received and never spent have not published a key. Address reuse is common on Dogecoin, and every spend publishes the key, so a substantial share of supply is exposed. Source: https://github.com/dogecoin/dogecoin ### 6. Verification: 6/10 The Dogecoin client is open source and derived from a heavily reviewed codebase, so the signature scheme is directly verifiable. There is no post-quantum claim to verify. Source: https://github.com/dogecoin/dogecoin ## Signature scheme - **On mainnet today:** ECDSA on secp256k1, inherited from Bitcoin - **Post-quantum scheme:** None proposed. No Dogecoin-specific post-quantum work was found. - **NIST standard:** None adopted - **Readiness tier:** Tier 5: Exposed. The signatures securing funds on mainnet today are quantum-vulnerable, and no public post-quantum plan, proposal or research programme could be found. ## Roadmap - **No published position** (proposed): No post-quantum roadmap, improvement proposal or research programme specific to Dogecoin was found at the time of writing. Source: https://github.com/dogecoin/dogecoin ## Exposure Dogecoin inherits Bitcoin's UTXO model, where an address is a hash of the public key and the key is revealed only when an output is spent. Coins that have been received and never moved are therefore not harvestable. Two things erode that protection on Dogecoin specifically: address reuse is common, particularly for tipping, exchange deposits and mining payouts, and reuse publishes the key while the address continues to hold and receive value. Dogecoin also has no equivalent of the analytical work that has produced measured exposure figures for Bitcoin, so the share of supply behind revealed keys is not independently quantified. ## Frequently asked questions ### Is Dogecoin quantum-safe? No. Dogecoin is derived from Bitcoin's codebase and signs with ECDSA on the secp256k1 curve, which a sufficiently large quantum computer would break. We found no published post-quantum roadmap, named replacement scheme or research programme for Dogecoin at the time of writing. Dogecoin's position is harder than Bitcoin's in one specific respect and easier in another. Harder, because the substantial research effort now going into Bitcoin's post-quantum proposals has no Dogecoin equivalent, so Dogecoin has neither a specification nor an activation debate. Easier, because Dogecoin shares Bitcoin's architecture closely enough that work done for Bitcoin, such as the output types proposed in BIP-360, could in principle be adapted rather than designed from scratch. ### Is Dogecoin quantum-safe? No. Dogecoin uses ECDSA on the secp256k1 curve, inherited from Bitcoin, and a sufficiently large quantum computer would break it. We found no published post-quantum roadmap or proposal specific to Dogecoin. ### Could Dogecoin just copy Bitcoin's solution? Plausibly, and that is its main advantage. Dogecoin's codebase is closely derived from Bitcoin's, so an output type such as the one proposed in BIP-360 could in principle be adapted rather than designed from scratch. That depends on Bitcoin producing an activated solution first, which has not happened. ### How much Dogecoin is exposed? It is not independently quantified. Dogecoin uses Bitcoin's model, where a key is revealed when an output is spent, so coins received and never moved are not exposed. Address reuse is common on Dogecoin, which publishes keys for addresses that keep receiving value. Unlike Bitcoin, no third-party analysis of exposed supply was found. ### Does Dogecoin's low score mean it is unsafe today? No. The Hardy Score measures readiness for a future quantum computer, not present-day security. Dogecoin's cryptography is not broken now. The score says that if a cryptographically relevant quantum computer arrives, Dogecoin has no published plan and no proposal in progress, which is a statement about preparedness. ## What this rating means if you hold Dogecoin Plain-language guidance from the same publication, with no product recommendation attached. - [Is my crypto safe from quantum computers?](https://hardyindex.com/guides/is-my-crypto-safe-from-quantum-computers.md) - [How to protect your crypto from quantum computers](https://hardyindex.com/guides/how-to-protect-crypto-from-quantum-computers.md) - [All guides](https://hardyindex.com/guides.md) Nothing on this profile is sponsored and nothing on it is an affiliate link. See https://hardyindex.com/how-we-make-money.md. ## Sources 1. [Dogecoin Core reference client](https://github.com/dogecoin/dogecoin): Dogecoin (GitHub) (primary, checked 12 August 2026) 2. [BIP-360: Pay-to-Merkle-Root (P2MR)](https://github.com/bitcoin/bips/blob/master/bip-0360.mediawiki): Bitcoin Improvement Proposals (primary, checked 12 August 2026) 3. [Safeguarding cryptocurrency by disclosing quantum vulnerabilities responsibly](https://research.google/blog/safeguarding-cryptocurrency-by-disclosing-quantum-vulnerabilities-responsibly/): Google Research (primary, checked 12 August 2026) --- Methodology: https://hardyindex.com/methodology (v1.1). Cite as: The Hardy Index, "Dogecoin", https://hardyindex.com/chains/dogecoin, as of 12 August 2026.