{
  "primary": {
    "ens": "quasareum.eth",
    "address": "0x42C137538bEe9d7eca612b41A807b5FB7B863C20",
    "registeredAt": "2025-02-20"
  },
  "aliases": [
    {
      "ens": "monproweb.eth",
      "address": "0x42C137538bEe9d7eca612b41A807b5FB7B863C20",
      "registeredAt": "2022-03-15"
    }
  ],
  "secondaryWallets": [
    {
      "address": "0x6cd9E5CfF193EB17aAf5cB5ee1F79BD6CF92FDef",
      "label": "Pre-2020 identity wallet",
      "role": "First wallet ever created. Holds the 2019-2021 Gitcoin Kudos cluster on Gnosis Chain — community participation traces from before the studio existed. No reverse ENS. Kept in cold custody for historical artifacts."
    }
  ],
  "stance": "Time-stamped on-chain witnesses, not collectibles. Each artifact is verifiable via `ownerOf(tokenId)` against the holder address — anyone can confirm presence at the listed moment, and presence cannot be backdated. Listed by signal type, not by floor price. The wallet has held both ENS names (monproweb.eth → quasareum.eth) since 2018; the studio identity is a continuation of the same on-chain identity, not a re-launch. A recurring venue across these artifacts is **Gitcoin** — Thomas has participated in multiple Gitcoin Grants rounds (public-goods funding, audit/creation contributions). Beyond the entries below, the wallet history on Ethereum, Gnosis Chain, Polygon, Optimism and Arbitrum carries additional Gitcoin POAPs and round-participation NFTs not individually catalogued here.",
  "artifacts": [
    {
      "slug": "ethernaut-oz-goerli-top-0.6-percent",
      "type": "attestation",
      "standard": "EAS",
      "network": "goerli",
      "contract": "0xD991431D8b033ddCb84dAD257f4821E9d5b38C33",
      "tokenId": "0",
      "collection": "Ethernaut by OpenZeppelin — Goerli leaderboard",
      "holder": "0x42C137538bEe9d7eca612b41A807b5FB7B863C20",
      "signedTo": "monproweb.eth",
      "externalUrl": "https://raw.githubusercontent.com/OpenZeppelin/ethernaut-leaderboard/update/boards/networkleaderboards/GoerliLeaderBoard.json",
      "significance": "Ethernaut by OpenZeppelin — the canonical Solidity smart-contract security wargame, where each level is an exploitable contract and completion proves the player can break it. Thomas ranked **#46 out of 7,853 players** on the Goerli leaderboard (top 0.6% globally), with **29 of 30 levels completed**, score 95.50/100, total difficulty faced 258. Only 88 players (1.12%) reached 29+ levels; only 28 (0.36%) completed all 30. Each level completion is enforced on-chain by the Ethernaut factory contract emitting a LevelCompletedLog event after a successful exploit transaction — players can't fake completion. Bonus: OpenZeppelin's own `aliases.json` in the public ethernaut-leaderboard repo maps the holder address to `monproweb.eth` — public attestation by OZ that this address is Thomas's. This is the strongest single signal of smart-contract auditing chops on the entire Quasareum surface.",
      "verifiedVia": "GET raw.githubusercontent.com/OpenZeppelin/ethernaut-leaderboard/update/boards/networkleaderboards/GoerliLeaderBoard.json — search for player=0x42C137538bEe9d7eca612b41A807b5FB7B863C20. Cross-checked against aliases.json in the same repo (same commit on `update` branch).",
      "verifiedAt": "2026-04-29"
    },
    {
      "slug": "proof-of-stake-pages-14118",
      "type": "nft",
      "standard": "ERC721",
      "network": "ethereum",
      "contract": "0x5bF5BCc5362F88721167C1068b58C60caD075aAc",
      "tokenId": "14118",
      "collection": "Proof Of Stake Pages",
      "symbol": "PoSp",
      "holder": "0x42C137538bEe9d7eca612b41A807b5FB7B863C20",
      "mintedAt": "2022-08-31T11:31:11Z",
      "signedTo": "monproweb.eth",
      "pledgeWei": "1337000000000000",
      "externalUrl": "https://proofofstake.gitcoin.co/",
      "significance": "Vitalik Buterin's book \"Proof of Stake: The Making of Ethereum and the Philosophy of Blockchains\" — digital edition issued via Gitcoin Grants Round 15 to fund public goods. Personally inscribed to monproweb.eth. Pledged 0.001337 ETH (the symbolic \"leet\" amount), receiving the signed book NFT in return. Minted on August 31, 2022 — exactly 15 days before The Merge (PoW → PoS transition, September 15, 2022). Time-stamped witness to having supported public-goods funding in the run-up to one of Ethereum's defining moments. The on-chain metadata carries Vitalik's message: \"Thank you for supporting public goods, and enjoy the book!\"",
      "verifiedVia": "eth_call ownerOf(14118) on Ethereum mainnet via publicnode + 1rpc",
      "verifiedAt": "2026-04-29"
    },
    {
      "slug": "stand-with-crypto-94978",
      "type": "nft",
      "standard": "ERC721",
      "network": "ethereum",
      "contract": "0x9D90669665607F08005CAe4A7098143f554c59EF",
      "tokenId": "94978",
      "collection": "Stand with Crypto",
      "holder": "0x42C137538bEe9d7eca612b41A807b5FB7B863C20",
      "mintedAt": "2023-08-17",
      "externalUrl": "https://www.coinbase.com/standwithcrypto",
      "significance": "Public stance on crypto policy advocacy, minted during a period of intense regulatory pressure on the industry (SEC vs Coinbase, 2023-2024). Open mint commemorating support for sensible crypto regulation; mint fees donated to vetted advocacy organizations through a Crypto Advocacy Round on Gitcoin. The signal is not rarity (164,000+ holders) — it is the dated public position taken when the industry was being attacked. Cannot be obtained retroactively.",
      "verifiedVia": "eth_call ownerOf(94978) on Ethereum mainnet via publicnode + 1rpc",
      "verifiedAt": "2026-04-29"
    },
    {
      "slug": "gitcoin-kudos-react-reactor",
      "type": "nft",
      "standard": "ERC721",
      "network": "gnosis",
      "contract": "0x74e596525C63393f42C76987b6A66F4e52733efa",
      "tokenId": "133164",
      "collection": "KudosToken",
      "symbol": "KDO",
      "holder": "0x6cd9E5CfF193EB17aAf5cB5ee1F79BD6CF92FDef",
      "externalUrl": "https://gitcoin.co/kudos/0x74e596525C63393f42C76987b6A66F4e52733efa/699",
      "significance": "Gitcoin React Reactor proficiency Kudos. The official description: \"React is a force in the modern web, and so are those who can yield it. Owners of this badge have demonstrated proficiency in React on a past project.\" Awarded by the Gitcoin community for actual React work, not for participation. Held on the pre-2020 identity wallet — proof that frontend practice was being formally recognized by peers years before Quasareum existed.",
      "verifiedVia": "Blockscout v2 NFT inventory on Gnosis Chain",
      "verifiedAt": "2026-04-29"
    },
    {
      "slug": "gitcoin-kudos-clarity-hack",
      "type": "nft",
      "standard": "ERC721",
      "network": "gnosis",
      "contract": "0x74e596525C63393f42C76987b6A66F4e52733efa",
      "tokenId": "146108",
      "collection": "KudosToken",
      "symbol": "KDO",
      "holder": "0x6cd9E5CfF193EB17aAf5cB5ee1F79BD6CF92FDef",
      "externalUrl": "https://gitcoin.co/kudos/0x74e596525C63393f42C76987b6A66F4e52733efa/100",
      "significance": "Clarity Hackathon participation Kudos. \"Thanks for participating in the Clarity Hackathon!\" — on-chain proof of completed hackathon participation around the Clarity (Stacks) smart-contract language ecosystem.",
      "verifiedVia": "Blockscout v2 NFT inventory on Gnosis Chain",
      "verifiedAt": "2026-04-29"
    },
    {
      "slug": "gitcoin-kudos-ethdenver-2019",
      "type": "nft",
      "standard": "ERC721",
      "network": "gnosis",
      "contract": "0x74e596525C63393f42C76987b6A66F4e52733efa",
      "tokenId": "145948",
      "collection": "KudosToken",
      "symbol": "KDO",
      "holder": "0x6cd9E5CfF193EB17aAf5cB5ee1F79BD6CF92FDef",
      "externalUrl": "https://gitcoin.co/kudos/0x74e596525C63393f42C76987b6A66F4e52733efa/641",
      "significance": "ETHDenver 2019 attendance — \"Dj Chill Room Ethdenver 2019\" Kudos. ETHDenver is one of Ethereum's largest annual community gatherings; the 2019 edition (the 3rd) was a defining year for early DeFi and grants funding. On-chain proof of physical presence at one of the formative Web3 community events.",
      "verifiedVia": "Blockscout v2 NFT inventory on Gnosis Chain",
      "verifiedAt": "2026-04-29"
    },
    {
      "slug": "gitcoin-kudos-polkadot-helloworld",
      "type": "nft",
      "standard": "ERC721",
      "network": "gnosis",
      "contract": "0x74e596525C63393f42C76987b6A66F4e52733efa",
      "tokenId": "145943",
      "collection": "KudosToken",
      "symbol": "KDO",
      "holder": "0x6cd9E5CfF193EB17aAf5cB5ee1F79BD6CF92FDef",
      "externalUrl": "https://gitcoin.co/kudos/0x74e596525C63393f42C76987b6A66F4e52733efa/3294",
      "significance": "Polkadot × Gitcoin integration milestone Kudos: \"This Kudos marks an important milestone: DOT and KSM natively integrated into Gitcoin.\" On-chain proof of presence the day the Polkadot ecosystem natively joined Gitcoin grants infrastructure.",
      "verifiedVia": "Blockscout v2 NFT inventory on Gnosis Chain",
      "verifiedAt": "2026-04-29"
    },
    {
      "slug": "gitcoin-kudos-cluster",
      "type": "cluster",
      "standard": "ERC721",
      "network": "gnosis",
      "contract": "0x74e596525C63393f42C76987b6A66F4e52733efa",
      "tokenId": "146103",
      "tokenCount": 18,
      "additionalTokenIds": [
        "146103",
        "145978",
        "145972",
        "145585",
        "145579",
        "145573",
        "145572",
        "145571",
        "145436",
        "145434",
        "145407",
        "145007",
        "145005",
        "133169",
        "133159",
        "132815",
        "132761",
        "145764"
      ],
      "collection": "KudosToken",
      "symbol": "KDO",
      "holder": "0x6cd9E5CfF193EB17aAf5cB5ee1F79BD6CF92FDef",
      "externalUrl": "https://gitcoin.co/kudos",
      "significance": "Eighteen additional Gitcoin Kudos held on the pre-2020 wallet — community Kudos from the \"Bot Summer 2021\" series, \"Robots Learning to Love\" cluster, \"Pride Bot\", \"Common Pepe\", \"Pirate\", \"Superman\", \"Holding Hands\", \"Learn & collab\", \"P2P community\", and others. Sent peer-to-peer between Gitcoin community members 2019-2021. Together with the four named Kudos above, paints a picture of two years of active presence in the Gitcoin DAO at the formative grants-funding era.",
      "verifiedVia": "Blockscout v2 NFT inventory on Gnosis Chain",
      "verifiedAt": "2026-04-29"
    },
    {
      "slug": "buildspace-web3-app-cohort-vega",
      "type": "nft",
      "standard": "ERC721",
      "network": "polygon",
      "contract": "0x3CD266509D127d0Eac42f4474F57D0526804b44e",
      "tokenId": "21096",
      "collection": "buildspace: Intro to Web3 | Cohort Vega | #65",
      "symbol": "BUILDSPACE",
      "holder": "0x42C137538bEe9d7eca612b41A807b5FB7B863C20",
      "externalUrl": "https://buildspace.so",
      "significance": "On-chain completion proof of buildspace \"Intro to Web3\" course (Cohort Vega, student #65) — Solidity smart contract writing + deployment + Web3 client app. Matches the buildspace certification dated 2022-08 in studio.certifications. Triple-redundant proof: cert + on-chain NFT + GitHub repos from 2022.",
      "verifiedVia": "Alchemy NFT API on Polygon mainnet",
      "verifiedAt": "2026-04-29"
    },
    {
      "slug": "buildspace-ens-on-polygon-cohort-intan",
      "type": "nft",
      "standard": "ERC721",
      "network": "polygon",
      "contract": "0x3CD266509D127d0Eac42f4474F57D0526804b44e",
      "tokenId": "21044",
      "collection": "buildspace: Build a domain service on Polygon | Cohort Intan | #9",
      "symbol": "BUILDSPACE",
      "holder": "0x42C137538bEe9d7eca612b41A807b5FB7B863C20",
      "externalUrl": "https://buildspace.so",
      "significance": "On-chain completion proof of buildspace \"Build a domain service on Polygon\" course (Cohort Intan, student #9 — early cohort). Building an ENS-like naming system from scratch on Polygon. Matches the buildspace certification dated 2022-07.",
      "verifiedVia": "Alchemy NFT API on Polygon mainnet",
      "verifiedAt": "2026-04-29"
    },
    {
      "slug": "pointer-solid-solidity-finisher",
      "type": "nft",
      "standard": "ERC721",
      "network": "polygon",
      "contract": "0x33FFDc6F11eC030F99cc28657835372CFD41Eb5c",
      "tokenId": "186",
      "collection": "Solid Solidity Finisher",
      "symbol": "ptr-sldty",
      "holder": "0x42C137538bEe9d7eca612b41A807b5FB7B863C20",
      "externalUrl": "https://pointer.gg",
      "significance": "On-chain completion proof of pointer.gg's Solid Solidity tutorial — Solidity fundamentals, audit-mindset, common smart contract pitfalls. Matches the pointer.gg certification dated 2022-05 in studio.certifications. The audit/creation work Thomas mentioned having done on Gitcoin without remembering the project name traces back to this combined buildspace + pointer.gg track in 2022.",
      "verifiedVia": "Alchemy NFT API on Polygon mainnet",
      "verifiedAt": "2026-04-29"
    },
    {
      "slug": "polygon-zkevm-scale-documentary",
      "type": "nft",
      "standard": "ERC721",
      "network": "polygon",
      "contract": "0x0Ffa96231f3A51BAD83520Dd61901F3E2FF99351",
      "tokenId": "480",
      "collection": "Digital Premiere | SCALE",
      "holder": "0x42C137538bEe9d7eca612b41A807b5FB7B863C20",
      "significance": "Digital premiere NFT for \"SCALE: Zero-Knowledge and the Quest for the New Internet\" — the Polygon zkEVM origin-story documentary. On-chain proof of having attended the digital premiere of one of the defining ZK rollup launches.",
      "verifiedVia": "Alchemy NFT API on Polygon mainnet",
      "verifiedAt": "2026-04-29"
    },
    {
      "slug": "aspecta-builders-achievement-cluster",
      "type": "cluster",
      "standard": "ERC721",
      "network": "linea",
      "contract": "0x1adc8d4675390A4A483D8a52E0bCe51b2a420B66",
      "tokenId": "1710",
      "tokenCount": 8,
      "additionalTokenIds": [
        "1716",
        "1718",
        "1719",
        "1721",
        "1722",
        "1723",
        "1724"
      ],
      "collection": "Aspecta Builders Achievement",
      "holder": "0x42C137538bEe9d7eca612b41A807b5FB7B863C20",
      "externalUrl": "https://aspecta.id",
      "significance": "Eight Aspecta Builders Achievement tokens earned on Linea. Aspecta is an on-chain builder reputation system; achievements accumulate from concrete builder activity (deployments, contributions, ecosystem participation). Token IDs 1710-1724 cluster suggests they were earned in close sequence — an active builder run on Linea L2.",
      "verifiedVia": "Alchemy NFT API on Linea mainnet",
      "verifiedAt": "2026-04-29"
    },
    {
      "slug": "linea-voyage-ecosystem-cluster",
      "type": "cluster",
      "standard": "ERC721",
      "network": "linea",
      "contract": "multiple",
      "tokenId": "0",
      "tokenCount": 12,
      "collection": "Linea Voyage ecosystem",
      "holder": "0x42C137538bEe9d7eca612b41A807b5FB7B863C20",
      "externalUrl": "https://linea.build",
      "significance": "Cluster of ~12 Linea ecosystem participation NFTs across multiple projects: Linea Travelbag, Linea Park - AsMatch Emerald Enchanted Key, Voyager's Odyssey, Tanuki Linea Park 2024, Yooldo x Linea, Foxy Collection, GenesisOAT, Pictographs Memory Card, Hunter's Valor, BitAvatar, Satoshi Universe Battle Pass, Abyss World - Linea Park, LineaDataScanner, LineaGang. Together they document early-user presence on Linea (ConsenSys L2) during its 2023-2024 ecosystem rollout — analogous to having done the Optimism Quests or Arbitrum Odyssey at launch.",
      "verifiedVia": "Alchemy NFT API on Linea mainnet (multiple contracts)",
      "verifiedAt": "2026-04-29"
    }
  ]
}