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  "schemaVersion": "1.0.0",
  "id": "ethereum-beacon-chain",
  "canonical": "https://degreesofsatoshi.com/encyclopedia/ethereum-beacon-chain/",
  "collection": "ethereum",
  "title": "The Beacon Chain after the Merge: consensus alongside execution",
  "description": "Understand the Beacon Chain’s role in Ethereum consensus and what changed when it joined the execution layer at the Merge.",
  "aliases": [
    "what is Beacon Chain",
    "Ethereum execution consensus layers"
  ],
  "dates": {
    "published": "2026-10-02",
    "modified": "2026-10-02",
    "verified": "2026-10-02T19:27:58.939Z",
    "dataAsOf": "2026-10-02"
  },
  "authorship": {
    "publisher": "Degrees of Satoshi editorial project",
    "process": "AI-assisted research and drafting with a separate automated source-verification pass; no external expert or named human review is implied."
  },
  "quickAnswer": {
    "text": "The Beacon Chain introduced Ethereum’s proof-of-stake consensus and became the consensus side of Ethereum at the Merge. Today execution clients process transactions while consensus clients coordinate the accepted chain and validator duties. It is not a second wallet balance that users must migrate to, and the Merge did not require converting ordinary ETH to a new user token.",
    "claimId": "ethereum-beacon-chain-quick-answer",
    "sourceIds": [
      "x425-eth-eth-merge",
      "x425-eth-eth-nodes"
    ]
  },
  "keyFacts": [
    {
      "label": "Role",
      "value": "The Beacon Chain coordinates proof-of-stake consensus.",
      "sourceIds": [
        "x425-eth-eth-merge"
      ],
      "id": "role",
      "claimId": "ethereum-beacon-chain-fact-role"
    },
    {
      "label": "Merge",
      "value": "Ethereum’s execution history joined that consensus system.",
      "sourceIds": [
        "x425-eth-eth-merge"
      ],
      "id": "merge",
      "claimId": "ethereum-beacon-chain-fact-merge"
    },
    {
      "label": "Continuity",
      "value": "Existing ETH balances and transaction history were preserved.",
      "sourceIds": [
        "x425-eth-eth-merge"
      ],
      "id": "continuity",
      "claimId": "ethereum-beacon-chain-fact-continuity"
    }
  ],
  "prerequisites": [
    "ethereum-nodes-rpc"
  ],
  "sections": [
    {
      "id": "history",
      "heading": "Consensus was introduced alongside the existing chain",
      "sourceIds": [
        "x425-eth-eth-merge"
      ],
      "paragraphs": [
        "Before the Merge, the Beacon Chain ran alongside Ethereum’s existing execution system. The Merge changed how Ethereum agreed on blocks by connecting execution to proof-of-stake consensus.",
        "That history explains why tools still use terms such as beacon node or beacon block. They describe the consensus system, not a separate application currency."
      ]
    },
    {
      "id": "example",
      "heading": "One transaction has execution and consensus context",
      "sourceIds": [
        "x425-eth-eth-nodes",
        "x425-eth-eth-pos"
      ],
      "paragraphs": [
        "Suppose a user sends ETH. Execution determines whether the signed transaction is valid and how balances change. Consensus determines how its containing block fits into the accepted chain and eventual finality.",
        "An execution receipt and a validator’s consensus vote answer different questions about the same overall Ethereum network. Reading one does not replace every check provided by the other."
      ]
    },
    {
      "id": "users",
      "heading": "No new ETH conversion was required",
      "sourceIds": [
        "x425-eth-eth-merge",
        "x425-eth-eth-security"
      ],
      "paragraphs": [
        "The Merge preserved account balances and historical execution data. Ordinary holders did not need to exchange ETH for a newly issued “ETH2” token as part of that protocol transition.",
        "A page claiming that an old balance must be migrated by sharing secrets or making a special conversion deserves careful scrutiny. Use the network’s documented history to distinguish an actual protocol change from a misleading offer."
      ]
    }
  ],
  "faq": [
    {
      "question": "Is the Beacon Chain still a separate place to hold ordinary wallet ETH?",
      "answer": "It is the consensus side of the integrated Ethereum system. Ordinary wallet balances are execution state; validator balances have their own consensus accounting.",
      "sourceIds": [
        "x425-eth-eth-merge",
        "x425-eth-launchpad-faq"
      ]
    },
    {
      "question": "Did the Merge erase Ethereum’s previous transactions?",
      "answer": "No. The existing execution history and balances were carried forward when proof-of-stake consensus took over.",
      "sourceIds": [
        "x425-eth-eth-merge"
      ]
    }
  ],
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      "statement": "The Beacon Chain introduced Ethereum’s proof-of-stake consensus and became the consensus side of Ethereum at the Merge. Today execution clients process transactions while consensus clients coordinate the accepted chain and validator duties. It is not a second wallet balance that users must migrate to, and the Merge did not require converting ordinary ETH to a new user token.",
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          "locator": "Merging with Mainnet; misconceptions"
        },
        {
          "sourceId": "source-81c7c6821c46702f",
          "locator": "Execution and consensus clients; synchronization; node types"
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      ],
      "scope": {
        "collection": "ethereum",
        "dataAsOf": "2026-10-02",
        "blockHeight": null
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      "qualification": "",
      "evidenceStatus": "documented",
      "verification": {
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        "checkedAt": "2026-10-02T19:27:58.939Z",
        "reviewer": "Independent automated verification agent verify_bitcoin_stablecoins_100",
        "notes": [
          "Read Merge history, Merging with Mainnet and Users and holders, plus client roles and launchpad accounting. Execution history preserved; no ETH2 conversion required. Consensus versus execution receipt distinction is accurate without implying two ordinary spendable wallet balances."
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      }
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        "notes": [
          "Read Merge history, Merging with Mainnet and Users and holders, plus client roles and launchpad accounting. Execution history preserved; no ETH2 conversion required. Consensus versus execution receipt distinction is accurate without implying two ordinary spendable wallet balances."
        ]
      }
    },
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      "statement": "Merge: Ethereum’s execution history joined that consensus system.",
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        "notes": [
          "Read Merge history, Merging with Mainnet and Users and holders, plus client roles and launchpad accounting. Execution history preserved; no ETH2 conversion required. Consensus versus execution receipt distinction is accurate without implying two ordinary spendable wallet balances."
        ]
      }
    },
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        "notes": [
          "Read Merge history, Merging with Mainnet and Users and holders, plus client roles and launchpad accounting. Execution history preserved; no ETH2 conversion required. Consensus versus execution receipt distinction is accurate without implying two ordinary spendable wallet balances."
        ]
      }
    }
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  "sources": [
    {
      "id": "x425-eth-eth-merge",
      "label": "The Merge",
      "publisher": "ethereum.org contributors",
      "url": "https://ethereum.org/en/roadmap/merge/",
      "locator": "Merging with Mainnet; misconceptions",
      "note": "Consensus transition preserved execution balances and transaction history.",
      "version": "Documentation snapshot retrieved 2 October 2026; response hash recorded separately",
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      "id": "x425-eth-eth-nodes",
      "label": "Ethereum nodes and clients",
      "publisher": "ethereum.org contributors",
      "url": "https://ethereum.org/en/developers/docs/nodes-and-clients/",
      "locator": "Execution and consensus clients; synchronization; node types",
      "note": "Post-Merge client roles, optional validators and synchronization modes.",
      "version": "Documentation snapshot retrieved 2 October 2026; response hash recorded separately",
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      "id": "x425-eth-eth-pos",
      "label": "Ethereum proof of stake",
      "publisher": "ethereum.org contributors",
      "url": "https://ethereum.org/en/developers/docs/consensus-mechanisms/pos/",
      "locator": "Slots; epochs; block proposals; attestations; finality",
      "note": "Consensus proposal schedule, voting and finality distinctions.",
      "version": "Documentation snapshot retrieved 2 October 2026; response hash recorded separately",
      "checkedAt": "2026-10-02T18:55:26.560Z",
      "contentSha256": "eb014204a846dc845deffe602d4156aea675ab817dc792cfb60b25bc3e9e4703",
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      "id": "x425-eth-eth-security",
      "label": "Ethereum security and scam prevention",
      "publisher": "ethereum.org contributors",
      "url": "https://ethereum.org/en/security/",
      "locator": "Wallet security; common scams; hardware wallets",
      "note": "Primary community guidance on wallet secrets, phishing, malicious sites and transaction checking.",
      "version": "Documentation snapshot retrieved 2 October 2026; response hash recorded separately",
      "checkedAt": "2026-10-02T18:55:24.140Z",
      "contentSha256": "1372ff086ae3f53ded99c8dfe308346a457574d41c04dc587de119a64080b448",
      "recordId": "source-83ec2d5a18d94ce1"
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    {
      "id": "x425-eth-launchpad-faq",
      "label": "Ethereum staking launchpad FAQ source",
      "publisher": "Ethereum Foundation",
      "url": "https://raw.githubusercontent.com/ethereum/staking-launchpad/dev/src/pages/FAQ/index.jsx",
      "locator": "Validators; deposits; activation; rewards; key management",
      "note": "Staking lifecycle, qualifying balances, network duties and deposit-data handling.",
      "version": "Documentation snapshot retrieved 2 October 2026; response hash recorded separately",
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  "related": {
    "articles": [
      "ethereum-nodes-rpc",
      "ethereum-proof-of-stake-finality",
      "ethereum-slots-and-missed-blocks",
      "ethereum-node-sync"
    ],
    "dossiers": [],
    "wallets": []
  },
  "revisionHistory": [
    {
      "date": "2026-10-02",
      "kind": "published",
      "summary": "First publication after primary-source research and separate automated verification."
    }
  ],
  "citation": "Degrees of Satoshi editorial project. “The Beacon Chain after the Merge: consensus alongside execution.” Published 2026-10-02; updated 2026-10-02. https://degreesofsatoshi.com/encyclopedia/ethereum-beacon-chain/"
}