Blockchain Credential Verification Cost: 50,000 Credentials for $3,000 a Year

How much does it cost to verify credentials on blockchain, without issuing an NFT? Here's how POK's Blockchain Verify plans work, what each one costs, and when to choose them.

Direct answer: Blockchain Verify is POK's mid-tier credential model that registers and cryptographically verifies each credential on public blockchain using the open Blockcerts standard, without minting an NFT. It comes in two plans. Blockchain Verify Basic costs $3,000 per year for up to 50,000 credentials (as little as $0.06 each) and Blockchain Verify Premium costs $0.30 per credential with no minimum and no setup fee. Both sit between POK's free web-based credentials and full NFT Ownership.

Key takeaways

• Blockchain Verify adds real, tamper-evident blockchain verification (a Blockcerts hash) without the cost or complexity of NFTs.
• Two plans: Blockchain Verify Basic at $3,000/year for up to 50,000 credentials (as little as $0.06 each), and Blockchain Verify Premium at $0.30 per credential with no minimum. No setup fee, no variable gas fees.
• Credentials are batched into a Merkle tree: only the root is anchored on-chain and each credential carries a Merkle proof tying it to that root, so a single transaction certifies thousands. Recipients can download the Blockcerts JSON and validate it independently.
• Credentials are registered on-chain in periodic batches, and they're viewable and shareable immediately, even before the hash is confirmed.
• Basic includes everything in POK's free plan, and Premium adds the NFT premium features (all except employability). Both comply with Open Badges 3.0 and W3C Verifiable Credentials. POK serves 1,100+ institutions across 19 countries with 1.5M+ credentials issued.

For years, organizations had two options: free digital credentials with no blockchain proof, or premium NFT credentials with full ownership and white-label branding. POK - Proof of Knowledge closes the gap in between with Blockchain Verify, genuine blockchain verification at an accessible, predictable price. This guide explains what it is, what each of its two plans costs, how it works, and when it's the right choice.

What Is Blockchain Verify?

Blockchain Verify is a credential model that anchors a unique cryptographic hash of each digital credential on public blockchain using the Blockcerts open standard, instead of issuing the credential as an NFT. The result is a credential whose authenticity can be verified cryptographically by anyone, at any time, without contacting the issuer, and without the recipient needing a crypto wallet.

It's the middle of POK's credential models, available in two plans: Blockchain Verify Basic and Blockchain Verify Premium. Both add real blockchain registration and cryptographic proof of authenticity. The institution chooses the credential type at the start of the issuance flow.

How Much Does Blockchain Verify Cost?

Blockchain Verify is priced for predictability, with no variable gas fees passed on to the issuer. There are two plans:

Plan	Price	What it includes
Blockchain Verify Basic	$3,000 / year, up to 50,000 credentials per year	Everything in the free web plan, plus blockchain registration and verification
Blockchain Verify Premium	$0.30 / credential, no minimum, no setup fee	Blockchain registration plus all the NFT premium features except employability

Basic is the annual license. At $3,000 a year for up to 50,000 credentials, it works out to as little as $0.06 per credential at full use, and it keeps the free plan's experience with POK's standard branding and emails.

Premium is the pay-per-credential plan. On top of blockchain registration it unlocks the premium features that used to come only with NFTs: custom domain, branding, your own email provider, email templates and reports, the LinkedIn message, credential and page analytics, learning path metrics, lead pages and Google Ads retargeting. Only individual NFT ownership and the employability index stay exclusive to NFT Ownership.

Because POK absorbs and optimizes the on-chain registration cost (see batch minting below), issuers pay a flat, known amount, not a fluctuating blockchain transaction fee. You can see current pricing on the POK pricing page.

How Does Blockchain Verify Work?

Blockchain Verify follows the Blockcerts standard, which uses a Merkle tree to register many credentials in a single blockchain transaction. When a batch is issued, POK hashes each credential, builds a Merkle tree from those hashes, and anchors only the Merkle root on public blockchain (Ethereum). Each credential's Blockcerts file then carries a Merkle proof, the cryptographic path that ties that specific credential to the on-chain root. There is no NFT.

This is exactly why credentials are registered in periodic batches rather than one by one: a single on-chain transaction can certify thousands of credentials at once. Each Blockchain Verify credential moves through four states:

1. Issued: the credential is created and is immediately visible and shareable in the recipient's viewer.
2. Pending: it waits to be included in the next on-chain batch.
3. Batch-minted: POK registers the accumulated batch on blockchain (about once a week per issuing wallet).
4. Verifiable: the hash is confirmed on-chain and the credential's Blockcerts file can be downloaded and validated.

A key advantage: the credential is viewable and shareable from the moment it's issued, even while the on-chain hash is still pending. Recipients never wait to receive or share their credential.

Blockchain Verify credits are tracked separately from NFT credits in your POK account, with their own counter across the dashboard, issuance, and settings, so the two models can coexist in the same organization.

How Do You Verify a Blockchain Verify Credential?

Anyone can verify a Blockchain Verify credential in two complementary ways:

• In the POK viewer: the public credential page shows that the recipient is verified, the issuer is verified (domain and KYC), and that the credential is registered on blockchain, with a direct link to view the transaction on Ethereum.
• Independently, via Blockcerts: the recipient downloads the credential's Blockcerts JSON file (which contains the Merkle proof) from the viewer's download menu and validates it in any Blockcerts-compatible validator. The validator recomputes the credential's hash, follows the proof up to the Merkle root, and checks that root against the on-chain transaction. Because the standard is open, anyone holding the downloaded Blockcerts file can validate it in a third-party validator without POK's involvement. The cryptographic proof doesn't rely on POK's servers (the recipient just needs to keep, or re-download, the file). That's a core trust advantage over database-only credentials.

This is the difference between saying a credential is on blockchain and proving it: a Blockchain Verify credential carries an open, independently checkable cryptographic proof.

Free vs Blockchain Verify Basic vs Premium vs NFT Ownership

POK offers four levels so each organization can match cost to need. All of them issue verifiable digital credentials under Open Badges 3.0 and W3C Verifiable Credentials.

Feature	Web Based Free	Blockchain Verify Basic	Blockchain Verify Premium	NFT Ownership
Price	$0, unlimited	$3,000/yr (up to 50,000)	$0.30/credential	From $0.80/credential
Open Badges 3.0 & W3C VC	✅	✅	✅	✅
Blockchain registration	No	✅ Blockcerts hash	✅ Blockcerts hash	✅ NFT
Cryptographic verification	No	✅	✅	✅
Downloadable Blockcerts JSON	No	✅	✅	No
NFT owned by the recipient	No	No	No	✅
Permanence independent of POK	No	Partial	Partial	✅
Branding	POK standard	POK standard	White-label	White-label
Custom pages & email templates	No	No	✅	✅
Analytics & premium features	No	No	✅ (except employability)	✅
Employability index	No	No	No	✅

In Blockchain Verify Basic (and the free plan), custom landing pages and custom email templates are not included; credentials are delivered with POK's standard page and emails. Blockchain Verify Premium unlocks them, along with the rest of the premium features except employability. Individual NFT ownership and the employability index remain exclusive to NFT Ownership.

When Should You Choose Blockchain Verify vs NFT Ownership?

Choose Blockchain Verify Basic when you need real, independently verifiable blockchain proof at scale and at a predictable annual cost, for example course completions, participation certificates, and high-volume microcredentials where verifiability matters more than recipient-owned NFTs or custom branding.

Choose Blockchain Verify Premium when you want that same blockchain proof plus your own domain, branding, email templates and analytics, paying per credential with no minimum.

Choose NFT Ownership when each credential should be a unique asset owned by the recipient for life, with maximum traceability and the employability index, ideal for flagship degrees, professional certifications, and brand-critical employability programs.

Many institutions combine them: Blockchain Verify for volume, NFT Ownership for flagship credentials, and the free plan for everything else.

Get Started With Blockchain Verify

POK is ISO 27001 and SOC 2 certified and a 1EdTech-certified Open Badges 3.0 issuer, trusted by 1,100+ institutions across 19 countries. Start free, add Blockchain Verify Basic or Premium when you need on-chain proof, and upgrade specific credentials to NFT Ownership when ownership matters.

Explore POK pricing or schedule a demo to see Blockchain Verify in action.

Frequently Asked Questions

What is Blockchain Verify?

Blockchain Verify is POK's mid-tier credential model that anchors each credential on public blockchain using the open Blockcerts standard (it batches credentials into a Merkle tree and registers the root on-chain), without issuing an NFT. It comes in two plans, Basic and Premium, and adds real, tamper-evident blockchain verification on top of POK's free web-based credentials.

How much does blockchain credential verification cost with POK?

Blockchain Verify has two plans. Blockchain Verify Basic costs $3,000 per year for up to 50,000 credentials (as little as $0.06 each) and includes everything in the free web plan plus blockchain registration. Blockchain Verify Premium costs $0.30 per credential with no minimum and no setup fee, and adds all the NFT premium features except employability. Pricing is flat and predictable, with no variable blockchain gas fees passed on to the issuer.

Does Blockchain Verify use NFTs?

No. Blockchain Verify registers a cryptographic hash of each credential on public blockchain using the Blockcerts standard, but it does not mint an NFT. NFT-based credentials, where each credential is a unique asset owned by the recipient, are part of POK's NFT Ownership model.

What is the Blockcerts standard?

Blockcerts is an open standard for creating, issuing, and verifying blockchain-based credentials. A batch of credentials is hashed into a Merkle tree and only the root is anchored on a public blockchain; each credential's downloadable JSON file carries a Merkle proof that anyone can validate independently, without relying on the issuing platform staying online.

How is a Blockchain Verify credential validated?

A Blockchain Verify credential can be validated in POK's viewer, which shows the verified recipient, the verified issuer, and a link to the on-chain transaction. It can also be validated independently: the recipient downloads the Blockcerts JSON file and checks it in any Blockcerts-compatible validator.

What is the difference between Blockchain Verify and NFT Ownership?

Blockchain Verify provides cryptographic blockchain verification via a Blockcerts hash. Basic ($3,000/year for up to 50,000 credentials) keeps POK's standard branding, while Premium ($0.30 per credential) adds the premium features except employability. NFT Ownership issues each credential as an NFT owned by the recipient for life, and it is the only level with individual NFT ownership and the employability index.

Related Reading

• Open Badges 3.0: The Complete Guide to Digital Credentials
• NFT Digital Credentials: Verification, Ownership and Trust
• POK vs Credly, Accredible, Acreditta & Certifier: Pricing 2026
• What Are Digital Credentials, NFTs and Blockchain? The Future with POK

For more on digital credentials, microcredentials, and blockchain certification, visit our blog.

Last updated: November 3, 2026.