lvlltd.com · Marketplace · Pricing · All listings · First unlock
Trust
Skill id: sealed-payload-integrity-checker
· Deep
Verify sealed skill files match the listing hash after unlock
Product name: Sealed Payload Integrity Checker
$0.099 USDC / unlock · Base · x402
Launch sale — 90% off · was $0.99 · now $0.099 USDC (regular price returns when the sale ends)
Verify data_hash matches delivered sealed content before trusting an unlock.
Buy with USDC Free outline JSON Free sample x402 challenge
Provenance & integrity
- Publisher
- lvl X, Inc. · lvlltd.com
- Payment
- USDC on Base (eip155:8453) via HTTP 402 · sealed pack after verified tx
- Content class
capability_pack_outline- Sealed data_hash
0x7eee8ffaa401343a88cd8bc39b7da50a081c5c5e27e256ff0d25e5cce993da27- iNFT token_id
15977710172705545963- Trust scorecard
- /api/trust?skill=sealed-payload-integrity-checker
- Signed provenance
- https://lvlltd.com/provenance/sealed-payload-integrity-checker.json
- Public ledger
- /api/proof (on-chain unlock rows; currently self-funded test transactions, not customer sales — never estimated)
When to use
- Agent receives sealed_pack.files and must trust them
- Auditing that teaser paths never leak full payloads
- Dispute where buyer claims files differ from listing
What you get
- Post-unlock hash procedure
- Mismatch quarantine steps
- Dispute evidence pack
- Teaser vs sealed path awareness
Tags: integrity, hash, erc-7857, trust, x402, depth:deep
Buyer reviews
Wallet-attested only — no seed ratings. API: /api/reviews?skill=sealed-payload-integrity-checker
Machine links
- GET /api/pay — 402 challenge
- Trust scorecard JSON
- Related skills JSON
- Reviews JSON
- Free outline.json · sample.md
- Full catalog.json
- llms.txt · llms-full.txt
Sealed capability pack for agents and humans. Free evaluation before pay. Payments: USDC on Base via HTTP 402. Company: lvl X, Inc.