Comprehensive ZK Blockchain Status: Active and Defunc (nonZK+ZK)

Comprehensive ZK Blockchain Status: Active and Defunct

Comprehensive ZK Blockchain Status: Active and Defunct

1. ZK Blockchains Active Today

Blockchain Description TPS Consensus Type Security Threshold Equation Total Value Locked (TVL) Developer Activity Mainnet Launch Privacy Level ZKP Implementation
Ethereum (with ZK rollups) Smart contract platform with ZK rollup support 15 (L1), 2000-10000 (L2) Proof of Stake 51% of staked ETH $30B+ Very High 2015 (ZK rollups: 2021) Optional Various (zk-SNARKs, zk-STARKs)
Zcash Privacy-focused cryptocurrency using zk-SNARKs 27 Proof of Work 51% of hash power N/A High 2016 High zk-SNARKs
Loopring Ethereum L2 DEX protocol 2025 ZK Rollup Ethereum security $100M+ Medium 2017 Low zk-SNARKs
Horizen Multi-chain ecosystem with optional privacy 1000+ Proof of Work 51% of hash power N/A Medium 2017 Optional zk-SNARKs
Mina Protocol Succinct blockchain using ZK-SNARKs 22 Ouroboros Samasika 51% of stake N/A High 2020 Optional zk-SNARKs
StarkNet Ethereum L2 using ZK-STARKs 3000-6000 ZK Rollup Ethereum security $100M+ High 2020 Low ZK-STARKs
zkSync Ethereum L2 using ZK Rollups 2000+ ZK Rollup Ethereum security $50M+ High 2020 Low zkSNARKs
Aztec Protocol Ethereum L2 with programmable privacy 300 ZK Rollup Ethereum security $10M+ Medium 2021 High zk-SNARKs
Polygon Zero Ethereum scaling solution with ZK proofs 40-50 ZK Rollup Ethereum security + 2/3 of MATIC stake $100M+ High 2021 Optional Plonky2 (custom ZKP)
Aleph Zero DAG-based blockchain with ZKPs 100,000+ DAG with PoS 2/3 of stake N/A Medium 2021 Optional zk-SNARKs
Nightfall Privacy-focused Ethereum L2 100+ Optimistic Rollup + ZKP Ethereum security N/A Medium 2021 High zk-SNARKs
IronFish Privacy cryptocurrency with ZKPs TBA Proof of Work 51% of hash power N/A Medium 2021 High zk-SNARKs
Anoma Intent-centric, privacy-preserving protocol TBA Proof of Stake 2/3 of stake N/A Medium Expected 2024 High zk-SNARKs
Manta Network Multi-chain privacy protocol 5000+ Proof of Stake 2/3 of stake N/A Medium 2022 High zk-SNARKs

2. Blockchains That Failed or Are No Longer Active

    # Blockchain Reason for Failure
    1 BitConnect Ponzi scheme, shutdown by regulators.
    2 OneCoin Ponzi scheme, legal actions.
    3 Coinye Legal issues with Kanye West, lack of serious intent.
    4 Auroracoin Lack of adoption in Iceland, market decline.
    5 PayCoin (XPY) Mismanagement, accusations of fraud.
    6 SpaceChain Lack of adoption, technical challenges.
    7 DAO (Decentralized Autonomous Organization) Hacked, resulting in Ethereum's hard fork.
    8 Feathercoin Lack of differentiation, low adoption.
    9 Nxt Early adoption issues, lack of development momentum.
    10 Xaurum Poor market performance, lack of interest.
    11 NovaCoin Lack of innovation, overshadowed by competitors.
    12 DigiPulse Pivoted business model away from blockchain.
    13 Clams No clear use case, dwindling community.
    14 Alphacoin Lack of adoption, low innovation.
    15 Megacoin No market traction, development stopped.
    16 AurumCoin Failed to gain trust, lack of adoption.
    17 MintCoin Poor market performance, abandoned by developers.
    18 OctoCoin No significant user base, limited innovation.
    19 GoldMint Technical challenges, lack of adoption.
    20 KoreCoin Failed to gain traction, technical issues.
    21 Phoenixcoin Low adoption, lack of development.
    22 UnbreakableCoin Failed to achieve market relevance.
    23 Myriadcoin Overlooked by the market, low adoption.
    24 IXCoin No clear value proposition, low interest.
    25 Franko Failed to maintain community, low adoption.
    26 PotCoin Niche market, limited adoption.
    27 Fluttercoin Lack of development, market decline.
    28 Ixcoin Lack of differentiation, low adoption.
    29 BitBay No clear use case, low market interest.
    30 Bytecent Lack of innovation, poor adoption.
    31 Einsteinium Low market interest, no clear use case.
    32 E-Gulden Lack of adoption, low market interest.
    33 Mazacoin No clear user base, market decline.
    34 Netko Low adoption, lack of development.
    35 Pesetacoin No clear use case, low adoption.
    36 Karmacoin Lack of adoption, low market interest.
    37 JackpotCoin No clear value proposition, low adoption.
    38 Neocoin Low adoption, overshadowed by competitors.
    39 Worldcoin Lack of adoption, low innovation.
    40 Skeincoin Failed to gain traction, low adoption.
    41 Spreadcoin Lack of development, low market interest.
    42 Ultimate Secure Cash No clear use case, market decline.
    43 BlueCoin Lack of development, low adoption.
    44 GlobalCoin Failed to gain traction, overshadowed by others.
    45 Casinocoin Niche market, lack of adoption.
    46 HyperStake Low adoption, no clear innovation.
    47 MonetaryUnit Failed to maintain community, low adoption.
    48 UFOCoin No significant market traction, low adoption.
    49 BelaCoin Lack of development, low market interest.
    50 Diamond (DMD) No clear value proposition, low adoption.
    51 Greencoin No market traction, low adoption.
    52 LiteDoge Lack of development, low adoption.
    53 EnergyCoin No significant user base, low market interest.
    54 SwingCoin No clear use case, low adoption.
    55 PoSW Coin Failed to gain traction, low adoption.
    56 NYCoin No clear value proposition, low adoption.
    57 SatoshiMadness Lack of adoption, low market interest.
    58 TittieCoin No clear use case, lack of adoption.
    59 TeslaCoin Low adoption, lack of development.
    60 CasinoCoin Niche market, limited adoption.
    61 RonPaulCoin No clear use case, low market interest.
    62 BitBean Low adoption, lack of development.
    63 Bottlecaps Failed to gain traction, low adoption.
    64 LeviarCoin Lack of development, low market interest.
    65 GlobalBoost-Y No clear value proposition, low adoption.
    66 FedoraCoin No clear use case, low adoption.
    67 Marscoin Niche market, low adoption.
    68 42 Coin No significant user base, low market interest.
    69 MaggieCoin No clear use case, low adoption.
    70 FlappyCoin No clear value proposition, low adoption.
    71 DarkCoin (renamed to Dash) Pivoted to Dash, but the original DarkCoin is discontinued.
    72 Ardor Lack of adoption, overshadowed by competitors.
    73 Wings No clear use case, low market interest.
    74 BitCrystals No significant user base, low adoption.
    75 NeosCoin Lack of development, low market interest.
    76 ArcticCoin No clear value proposition, low adoption.
    77 Verge Privacy flaws, lack of trust in the community.
    78 SexCoin Niche market, low adoption.
    79 FuckToken No serious use case, low adoption.
    80 Rimbit Failed to gain traction, low adoption.
    81 GPU Coin No clear use case, lack of adoption.
    82 MaxCoin Lack of development, low market interest.
    83 EuropeCoin Failed to achieve market relevance.
    84 BunnyCoin No clear value proposition, low adoption.
    85 Xaurum Low market performance, lack of interest.
    86 Bitmark No clear use case, low adoption.
    87 Elacoin Lack of adoption, low market interest.
    88 Sambacoin No significant user base, low market interest.
    89 Cryptobullion Lack of development, low adoption.
    90 CoolCoin No clear value proposition, low adoption.
    91 FlorinCoin No clear use case, low adoption.
    92 WispCoin Failed to gain traction, low adoption.
    93 Rise Lack of adoption, no clear innovation.
    94 Decred Development struggles, low adoption.
    95 Expanse Overshadowed by Ethereum, low adoption.
    96 Rise No clear use case, low adoption.
    97 OKCash Lack of innovation, poor adoption.
    98 BlackCoin Lack of development, low market interest.
    99 Aeternity Lack of adoption, development issues.
    100 E-Gulden Lack of adoption, low market interest.

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