{"uid":"cap_LZB_h-g2D2MAvZ8N0qoww","slug":"blockscout-transaction-blob-data-fetcher-efcfde96","name":"Blockscout Transaction Blob Data Fetcher","description":"Explore crypto activities with Blockscout's multichain search. Find transactions, addresses, tokens, and dapps across top blockchain networks — your go-to explorer for cross-chain blockchain data","url":"https://api.blockscout.com/%7Bchain_id%7D/api/v2/transactions/%7Btransaction_hash_param%7D/blobs","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET","HEAD","DELETE"],"type":"string"},"pathParams":{"type":"object","properties":{"chain_id":{"type":"string"},"transaction_hash_param":{"type":"string"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":{"type":"json","example":{"items":[{"hash":"string","blob_data":"string","kzg_proof":"string","kzg_commitment":"string"}]}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.002","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.002/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_wxdwxbuy5lp2atkBd4wr4","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.002","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Retrieves EIP-4844 blob data associated with a specific transaction on a given blockchain network via Blockscout's multichain explorer","exampleAgentPrompt":"Can you pull up the blob data for transaction 0x3a9f...c4d2 on Ethereum mainnet (chain ID 1) using Blockscout — I need the KZG commitments and proofs attached to it.","exampleUseCases":[{"title":"Verify L2 rollup blob submission","prompt":"I need to verify that this Arbitrum transaction 0xabc123...def456 actually included its blob data on-chain — can you fetch the blobs and KZG commitments for it on chain ID 42161 using Blockscout?"},{"title":"Debug EIP-4844 blob contents","prompt":"Can you retrieve the raw blob data for transaction 0x9f1e...a3b7 on the Base network (chain ID 8453) so I can inspect what the rollup submitted?"},{"title":"Audit blob proof for data availability","prompt":"I want to audit the KZG proof and commitment for transaction 0x77dd...beef on Ethereum (chain ID 1) to confirm the blob was correctly committed — can you look that up on Blockscout?"}],"resultDescription":"Returns an array of blob objects associated with the transaction, each containing: blob hash, raw blob data (hex-encoded), KZG proof, and KZG commitment — all fields relevant to EIP-4844 proto-danksharding validation.","failureModes":["Invalid or malformed transaction hash returns an error or empty result","Chain ID not supported by Blockscout returns 404 or error","Transaction exists but has no blobs (pre-EIP-4844 or non-blob tx) returns empty items array","Network timeout if the chain node is slow to respond","Payment failure (x402) if USDC balance is insufficient"],"whenToPreferThis":"Use this endpoint when you need to retrieve EIP-4844 blob sidecar data (including KZG proofs and commitments) for a specific transaction on a supported blockchain. Ideal for developers auditing rollup data availability, debugging blob transactions, or verifying proto-danksharding submissions. Prefer this over generic RPC calls when you need structured blob data across multiple chains without managing your own node infrastructure.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-10T18:30:01.725Z","isFirstParty":false}