{"eid":"chainscorelabs","name":"Ethereum blobs","domain":"chainscorelabs.com","resolved_by":"domain","topics":["storage"],"n_records":2,"best_vorder":5,"review":null,"aliases":["Ethereum blobs","Ethereum blobs (EIP-4844) as a storage layer","chainscorelabs.com","ethstorage / evmfs / on-chain calldata file systems"],"records":[{"rid":"storage/ethereum-blobs-as-a-storage-layer","card":{"rid":"storage/ethereum-blobs-as-a-storage-layer","eid":"chainscorelabs","topic":"storage","slug":"ethereum-blobs-as-a-storage-layer","provider":"Ethereum blobs (EIP-4844) as a storage layer","url":"https://chainscorelabs.com/da","domain":"chainscorelabs.com","category":"blockchain","tier":null,"verdict":"fails-egress","vorder":5,"grp":"rejected","confidence":"reported","binding":"per-object-cap","identity_kind":"card","identity_basis":"stated","needs_card":1,"needs_phone":0,"needs_id":0,"needs_institution":0,"country":null,"crypto":null,"interfaces":"rest","egress_metered":0,"per_object_bytes":128000,"retention_days":18,"verified_at":"2026-10-21T00:00:00.000Z","verified_basis":"inherited","checked_on":"2026-10-21","stale_on":"2026-11-04","n_evidence":2,"usd_month":null,"usd_per_tb_month":null,"summary":"No free tier. Live cost at time of check: $0.012 per MB as blobs (vs $11.01/MB as calldata). 128 KB per blob package, separate blob fee market.","duplicate_of":null,"n_unknown":4},"record":{"topic":"storage","slug":"ethereum-blobs-as-a-storage-layer","provider":"Ethereum blobs (EIP-4844) as a storage layer","url":"https://chainscorelabs.com/da","category":"blockchain","free_tier":{"stated":"No free tier. Live cost at time of check: $0.012 per MB as blobs (vs $11.01/MB as calldata). 128 KB per blob package, separate blob fee market.","unit":"MB","metered_on":"unstated","source_url":"https://chainscorelabs.com/da","read_on":"2026-10-21","notes":null},"per_object_cap":{"stated":"128 KB per blob","bytes":128000,"source_url":"https://chainscorelabs.com/da","notes":"not stated"},"retention":{"stated":"~18-day retention; per-block blob count cap; cost floats with the blob fee market.","days":18,"source_url":"https://chainscorelabs.com/da","notes":"not stated"},"egress":{"terms":"Free to read while data exists, but data is pruned by consensus nodes after ~18 days. Retrieval after that depends on third-party archival indexers (Blobscan etc.), not on Ethereum.","metered":false},"interface":["rest"],"interface_detail":"rest","tooling":"blobkit.org (TypeScript SDK for blob transactions), Blobscan API, standard Ethereum JSON-RPC.","chaining":"Multiply cost, not capacity: 10 TiB/month = 10,485,760 MB x $0.012 = ~$125,800/month, and the data expires in 18 days regardless of payment.","limits":[{"kind":"per-object-cap","value":"128 KB per blob","source":"https://chainscorelabs.com/da"}],"limits_note":"~18-day retention; per-block blob count cap; cost floats with the blob fee market.","identity_cost":{"kind":"card","detail":"derived from the record's prose, not from an identity field, and no signup was executed: No free tier. Live cost at time of check: $0.012 per MB as blobs (vs $11.01/MB as calldata). 128 KB per blob package, separate blob fee market. Data is intention","country":null},"reliability_note":"Data is intentionally ephemeral by protocol design — the network is built to forget it after the DA window.","confidence":"reported","confidence_note":"One page read moves it to documented.","evidence":[{"url":"https://chainscorelabs.com/da","date":"2026-10-21","proved":"'At 14:49 UTC, posting 1 MB costs ... $0.012 on Ethereum blobs'; 'kept for about 18 days'; 'About 887 times cheaper ... than calldata'"},{"url":"https://ethereum.org/developers/docs/data-availability/","date":"2026-10-21","proved":"DA machinery description confirming blobs are sampled/expired, not archived"}],"verdict":"fails-egress","verified_at":"2026-10-21T00:00:00.000Z","notes":"No free tier. Live cost at time of check: $0.012 per MB as blobs (vs $11.01/MB as calldata). 128 KB per blob package, separate blob fee market.","extras":{"dead_end":{"failure_class":"paid","why":"No free tier. Live cost at time of check: $0.012 per MB as blobs (vs $11.01/MB as calldata). 128 KB per blob package, separate blob fee market.","retry_when":null,"first_recorded":"2026-10-21"}},"binding":"per-object-cap","binding_note":"the per-object cap sets the shard size and therefore the object count; it bounds the total more tightly than any headline quota"},"claims":[{"path":"$.free_tier.stated","kind":"free-quota","num":128.0,"unit":"KB","per":null,"currency":null,"usd":null,"fx_date":null,"parse":"ok"},{"path":"$.limits[0].value","kind":"limit:per-object-cap","num":128.0,"unit":"KB","per":null,"currency":null,"usd":null,"fx_date":null,"parse":"ok"}],"unknown":[["$.extras.dead_end.retry_when","process"],["$.free_tier.notes","process"],["$.per_object_cap.notes","not-extracted"],["$.retention.notes","not-extracted"]],"history":[],"drift":[]},{"rid":"storage/ethstorage-evmfs-on-chain-calldata-file-systems","card":{"rid":"storage/ethstorage-evmfs-on-chain-calldata-file-systems","eid":"chainscorelabs","topic":"storage","slug":"ethstorage-evmfs-on-chain-calldata-file-systems","provider":"ethstorage / evmfs / on-chain calldata file systems","url":"https://chainscorelabs.com/da","domain":"chainscorelabs.com","category":"rejected-provider","tier":null,"verdict":"fails-quota","vorder":6,"grp":"rejected","confidence":"reported","binding":"none","identity_kind":"email","identity_basis":"defaulted","needs_card":null,"needs_phone":null,"needs_id":null,"needs_institution":null,"country":null,"crypto":null,"interfaces":null,"egress_metered":0,"per_object_bytes":null,"retention_days":null,"verified_at":"2026-10-21T00:00:00.000Z","verified_basis":"inherited","checked_on":"2026-10-21","stale_on":"2026-11-04","n_evidence":3,"usd_month":null,"usd_per_tb_month":null,"summary":"Real systems (EthStorage mainnet chain 333, FlatDirectory contracts; EVMFS 20 KB chunks per call) but pricing is per-calldata-byte. Calldata is $11.01/MB liv...","duplicate_of":null,"n_unknown":15},"record":{"topic":"storage","slug":"ethstorage-evmfs-on-chain-calldata-file-systems","provider":"ethstorage / evmfs / on-chain calldata file systems","url":"https://chainscorelabs.com/da","category":"rejected-provider","free_tier":{"stated":"Real systems (EthStorage mainnet chain 333, FlatDirectory contracts; EVMFS 20 KB chunks per call) but pricing is per-calldata-byte. Calldata is $11.01/MB live — 10 TiB would be ~$115 million","unit":"none","metered_on":"none","source_url":"https://chainscorelabs.com/da","read_on":"2026-10-21","notes":null},"per_object_cap":{"stated":"not recorded","bytes":null,"source_url":"https://chainscorelabs.com/da","notes":"not recorded"},"retention":{"stated":"not recorded","days":null,"source_url":"https://chainscorelabs.com/da","notes":null},"egress":{"terms":"not recorded","metered":false},"interface":["unknown"],"interface_detail":null,"tooling":"not recorded","chaining":"not recorded","limits":[],"limits_note":null,"identity_cost":{"kind":"email","detail":null,"country":null},"reliability_note":"Real systems (EthStorage mainnet chain 333, FlatDirectory contracts; EVMFS 20 KB chunks per call) but pricing is per-calldata-byte. Calldata is $11.01/MB live — 10 TiB would be ~$115 million","confidence":"reported","confidence_note":null,"evidence":[{"url":"https://chainscorelabs.com/da","date":"2026-10-21","proved":"Real systems (EthStorage mainnet chain 333, FlatDirectory contracts EVMFS 20 KB chunks per call) but pricing is per-calldata-byte. Calldata is $11.01/MB live — 10 TiB would be ~$115 million"},{"url":"https://docs.ethstorage.io/dapp-developer-guide/tutorials/upload-your-file-folder-with-ethfs-cli","date":"2026-10-21","proved":"cited as the basis of the rejection: Real systems (EthStorage mainnet chain 333, FlatDirectory contracts; EVMFS 20 KB chunks per call) but pricing is per-calldata-byte. Calldata is $11.01/MB live — 10 TiB would be ~$115 million"},{"url":"https://evmfs.app/","date":"2026-10-21","proved":"cited as the basis of the rejection: Real systems (EthStorage mainnet chain 333, FlatDirectory contracts; EVMFS 20 KB chunks per call) but pricing is per-calldata-byte. Calldata is $11.01/MB live — 10 TiB would be ~$115 million"}],"verdict":"fails-quota","verified_at":"2026-10-21T00:00:00.000Z","notes":"Real systems (EthStorage mainnet chain 333, FlatDirectory contracts; EVMFS 20 KB chunks per call) but pricing is per-calldata-byte. Calldata is $11.01/MB live — 10 TiB would be ~$115 million","extras":{"dead_end":{"failure_class":"quota","why":"Real systems (EthStorage mainnet chain 333, FlatDirectory contracts; EVMFS 20 KB chunks per call) but pricing is per-calldata-byte. Calldata is $11.01/MB live — 10 TiB would be ~$115 million","retry_when":null,"first_recorded":"2026-10-21"}},"binding":"none","binding_note":"no constraint of a named kind was recorded; the verdict rests on the quota sentence rather than on a named limit"},"claims":[{"path":"$.free_tier.stated","kind":"free-quota","num":20.0,"unit":"KB","per":null,"currency":null,"usd":null,"fx_date":null,"parse":"ok"}],"unknown":[["$.chaining","not-recorded"],["$.confidence_note","withheld"],["$.egress.terms","not-recorded"],["$.extras.dead_end.retry_when","process"],["$.free_tier.notes","process"],["$.identity_cost.detail","defaulted"],["$.identity_cost.kind","identity-defaulted"],["$.interface","interface-unknown"],["$.interface_detail","withheld"],["$.limits_note","process"],["$.per_object_cap.notes","not-recorded"],["$.per_object_cap.stated","not-recorded"],["$.retention.notes","process"],["$.retention.stated","not-recorded"],["$.tooling","not-recorded"]],"history":[],"drift":[]}]}