← Back to all solutions For Digital Artists

NFT Authenticity Certification — Post-AI Market Trust

The 2024 NFT market correction was driven by one trust failure: buyers could no longer tell human-made art from Midjourney or Stable Diffusion output minted by anonymous wallets. CHECKHC fixes that with AI-detection scoring, C2PA provenance reading, a Solana on-chain certificate and 200+ year Arweave storage — the four proofs collectors now demand before paying premium prices on OpenSea, Magic Eden, Rarible or Foundation.

Certify Your Art

10 free certifications included. Tradeable on major marketplaces.

Why Certification Matters

The NFT market has a trust problem. AI art, copies, and stolen work have eroded buyer confidence. Certification rebuilds that trust.

87% of NFT collectors say they would pay more for verified authentic human-created art. Certification isn't just protection—it's a premium feature that commands higher prices.

✨

Prove Human Creation

Our AI detection verifies your work is human-made, not AI-generated. Give collectors confidence they're buying authentic art.

🔗

Blockchain Proof

Your certification is recorded permanently on the blockchain, creating unforgeable proof of authenticity and creation date.

💎

Tradeable NFT

Your certification becomes a tradeable NFT in your wallet. Buy, sell, and transfer on major marketplaces like OpenSea and Magic Eden.

⏱️

200+ Year Storage

Your certification is stored permanently for centuries. Long after other proofs fade, yours will remain verifiable.

Trade on Major Marketplaces

Your certified NFTs are instantly recognized and tradeable across the ecosystem.

🌊
OpenSea
✨
Magic Eden
🎨
Rarible
💫
Foundation

Who Needs NFT Certification?

🎨

Digital Artists

Prove your creations are original and human-made. Stand out from AI-generated content flooding the market.

🖼️

Galleries

Offer verified authenticity guarantees to your collectors. Build trust and justify premium pricing.

💰

Collectors

Verify pieces before buying. Ensure you're investing in genuine human creativity, not AI copies.

📸

Photographers

Certify your photography as authentic captured moments. Protect against AI-generated claims.

How NFT Authenticity Certification Works in Detail

A four-layer pipeline designed for the post-AI NFT market, where "human-made" is the new premium.

When you upload a PNG, JPEG, TIFF, WebP or MP4 to your CHECKHC dashboard, the first layer reads every embedded metadata field — EXIF, XMP, IPTC, ICC profile, and any existing C2PA manifest written by Adobe Photoshop, Procreate, Affinity, Blender or native camera bodies (Leica M11-P, Sony α1 II, Nikon Z9/Z8, Canon EOS R5 Mark II, Fujifilm X-H2S). This creates a structured provenance sidecar that travels with the piece throughout the rest of the pipeline, preserving the tool chain, the layer count, the last-modified date and the software signature — the exact metadata that Magic Eden, OpenSea Studio and Foundation curators now look at before approving a drop.

Layer two runs the work through our multi-model AI detection panel: VAE decoder fingerprints for Stable Diffusion 1.5, SDXL and SD3; latent-noise residuals for Midjourney v5, v6 and v7; proprietary heuristics for DALL-E 3, Adobe Firefly, Google Imagen and Flux.1 (Schnell and Pro); and frequency-domain analysis for hybrid retouching. The meta-classifier returns a human-readable confidence score so collectors instantly understand whether the piece reads as 100% human, human-directed with AI assist, or fully generative. Sumsub's 2024 report on +550% synthetic-content fraud and Adobe's figure of 34 million AI images created per day explain why this layer has become indispensable — and why the Deloitte 2024 Digital Media Trends study found that 71% of buyers under 35 expect some form of provenance check before purchase.

Layer three anchors everything: a SHA-256 hash of the original file plus the verdict is written on Solana as a Memo instruction and mirrored to Arweave for 200+ year permanence. The certification itself takes the form of a transferable token in your Solana wallet — meaning it travels with the artwork at each resale, it appears in secondary-market listings, and it can be bundled alongside the actual NFT contract on OpenSea, Magic Eden, Rarible or Foundation. Layer four handles GDPR compatibility: because only the hash is on-chain, you retain your Article 17 right to erasure on the underlying file. See our multi-model AI detector, pre-publication proof workflow and GDPR-compliant storage pages for deeper dives.

Three Concrete Use Cases in Today's NFT Market

🎨

Scenario 1 — Generative Artist Clearing an OpenSea Drop

A generative artist using Procreate and custom brushes was accused of "AI slop" on Crypto Twitter ahead of a 500-piece OpenSea Studio drop. By certifying every piece through CHECKHC — with the Procreate timelapse video and layered PSD submitted alongside — the artist shipped the drop with a public verification URL on each listing page. Floor price held, zero refund requests, the collection sold out in under 48 hours.

🖼️

Scenario 2 — Gallery Curating a Physical + NFT Dual-Edition

A Paris gallery curating a mixed physical-print / NFT dual-edition needed to prove to buyers that the digital twin was the exact scan of the physical work, not a regenerated AI derivative. CHECKHC certified both the high-resolution scan and the OpenSea edition, linking them through a shared Arweave permanent URL — enabling the gallery to justify a 40% premium on the dual-edition over pure-digital editions of similar artists.

💎

Scenario 3 — Collector Verifying a Secondary-Market Purchase

A collector eyeing a 12 SOL piece on Magic Eden ran the CHECKHC verification URL before committing. The AI detection score and the original creator's Solana wallet signature matched the current seller's history, confirming the piece was the original 1/1 and not a resurfaced copy. The purchase closed; three weeks later the same piece resold for 18 SOL — the verification URL travelling with every transfer.

Certify Your Art Today

Join thousands of artists who've protected their work with blockchain certification.

Start Certification

10 free certifications • Instant blockchain proof

View NFT Plans → View Individual Plans →

Frequently Asked Questions

How does CHECKHC certification actually prove an NFT is human-created and authentic? +
Proof is built on four independent layers. First, we read every embedded metadata field (EXIF, XMP, IPTC, C2PA manifest) so the creative tool chain — Procreate, Photoshop, Affinity, Blender, native camera C2PA — is preserved and signed. Second, a multi-model detection panel scores the pixel data against Midjourney v5/v6/v7, DALL-E 3, Stable Diffusion 1.5/SDXL/SD3, Flux.1 Schnell/Pro, Adobe Firefly and Google Imagen fingerprints. Third, a SHA-256 hash plus the verdict is anchored on Solana and mirrored to Arweave. Fourth, a transferable token in your wallet carries the certification through every resale. Any third party can re-hash the file and verify the match on-chain — no trust in CHECKHC required.
Can I trade the certification as an NFT, or is it separate from the artwork contract? +
The certification is minted as a Solana-compatible transferable token that lives alongside — not inside — your existing NFT contract. This matters because it means you can mint your art on OpenSea (Ethereum), Magic Eden (Solana or Ethereum), Rarible or Foundation using whatever standard your collector base prefers, and attach the CHECKHC certification as a separate verifiable link in the listing metadata. On secondary-market resale, the verification URL remains public on checkhc.net so every future buyer can re-run the proof check. The certification token itself can also be bundled, transferred to a gallery wallet, or escrowed in a physical-plus-NFT dual-edition contract.
What happens if I used Midjourney, Firefly or Photoshop AI as part of my creative process? +
CHECKHC doesn't force a binary human/AI verdict. The multi-model detector returns a confidence score plus a per-model breakdown, and the certificate records the C2PA provenance chain if your editing software wrote one (Adobe Photoshop, Firefly, Lightroom and Premiere all now write C2PA manifests on export). This allows you to mint pieces as "human-directed with AI assist" and be transparent with collectors — which is the position taken by many blue-chip generative artists post-2024. The disclosure itself becomes a selling point, not a liability, because buyers can verify the exact tool mix rather than guessing.
How long does certification take and what do collectors see on the verification page? +
AI analysis and metadata extraction complete in under two minutes. Solana confirmation typically lands in the next block (~400ms) and Arweave permanent anchoring finalizes within a few minutes. The verification page at checkhc.net/v/{token} displays the original filename hash, the Solana transaction signature (clickable to a public explorer), the Arweave permanent URL, the per-model detection scores, the extracted EXIF/C2PA provenance chain and an RFC 3161 timestamp. It's a single URL you can paste into your OpenSea description, your Magic Eden item page or your Foundation drop — or embed as an iframe on your gallery website.
Do CHECKHC certifications hold value on OpenSea, Magic Eden, Rarible and Foundation? +
Yes. The underlying artwork is minted wherever you choose — CHECKHC is marketplace-agnostic — and the certification is surfaced as a public verification URL that any marketplace allows in the description, external_url or attributes fields of the NFT metadata. Several Paris and New York galleries already include CHECKHC verification URLs as default in their OpenSea Studio drops. Because the proof lives on Solana and Arweave rather than on a proprietary server, it remains valid even if a marketplace shuts down — unlike centralized "verified" badges which disappear when the platform changes its rules.
Does CHECKHC work with C2PA Content Credentials written by Adobe Photoshop or native cameras? +
Yes — and they complement each other. Adobe Photoshop, Lightroom, Firefly and Premiere now write signed C2PA manifests on export, and Leica M11-P, Sony α1 II, Nikon Z9/Z8, Canon EOS R5 Mark II and Fujifilm X-H2S write them at capture time. CHECKHC reads these manifests, validates the signing certificate against the Coalition for Content Provenance and Authenticity trust list, and then adds a second independent layer: blockchain anchoring plus multi-model AI detection. This dual-layer approach protects against the most common attack — a social platform or marketplace re-encoder that strips the C2PA manifest during upload — because the Solana hash cannot be stripped once it is written.
How does this stay GDPR-compliant if Solana and Arweave are immutable? +
CHECKHC only writes a SHA-256 hash — a 64-character fingerprint — to Solana and Arweave. The artwork file itself stays on our GDPR-compliant servers or, if you use the API, on your own infrastructure with local hashing. If you invoke your right to erasure under Article 17, we delete the image and all personal data from our systems. The on-chain hash remains mathematically bound to a file no one can reproduce without the original, which — according to CNIL's 2018 guidance on blockchain and GDPR — means it contains zero personal data. The CHECKHC platform is operated by a French SAS (SIREN 994 183 275) under French law, which is the European jurisdiction with the clearest blockchain-GDPR legal doctrine.
What does a realistic certification volume cost for an active NFT artist or gallery? +
New accounts receive 10 free certifications to test the full pipeline. Individual plans start at a few euros per month for dozens of certifications and scale to several hundred monthly certifications. Business plans include API access, bulk-upload CSV, WordPress/Ghost/Contentful connectors and a 99€/month tier with 300 monthly certifications — which is the sweet spot for a gallery running a mixed physical + NFT program or a generative artist shipping weekly 1/1 drops. See individual plans and business plans for detailed pricing, and prove-photo-is-real for the pre-publication workflow used by many NFT photographers.