🔑KYI
Overview of the Know Your Issuer credential.
Know Your Issuer (KYI)
Know Your Issuer is Bluprynt's foundational credential. It cryptographically proves that a token was issued by a verified legal entity and that the controlling wallet holds legitimate minting authority.
KYI is free for all qualifying assets.
KYI eliminates one of the most common fraud vectors in crypto: the ease with which bad actors can deploy copycat tokens that mimic legitimate projects. It also reduces listing and compliance risk for exchanges, dApps, and DeFi protocols by linking each token to a verified, onchain identity.
What KYI Produces
When an asset issuer completes KYI, three things happen:
Onchain identity created — The asset receives a W3C DID and ONCHAINID-compatible identity, linked to the issuer's verified legal entity.
KYI attestation published — An attestation linking the issuer's onchain identity, the asset's onchain identity, and the verified wallet is published to the asset's blockchain network.
Registry listing — The asset appears on the Bluprynt Registry with an "Authenticated" status, queryable via the KYI API.
What Gets Verified
Legal entity
KYB check against company registries and sanctions lists
Wallet ownership
Cryptographic challenge — issuer signs a Bluprynt-generated message to prove control
Mint authority
On-chain verification that the signed wallet holds mint authority for the token contract
Business identity
Company documents (certificate of incorporation, registration excerpts)
The KYI Process
Step 1: Open the KYI Application
From the Bluprynt dashboard home page, click "Authenticate Asset" on the Know Your Issuer card. You'll need an organization set up first — KYI is an organization-level attestation.
Step 2: Fill Out Token Details
Provide the basic information about your asset:
Token address — the contract address or on-chain identifier
Token name and ticker symbol
White paper URL — optional, but links to your Smart Disclosures document if you have one
Website URL
These details will be publicly visible on the Bluprynt authenticated asset dashboard.
Step 3: Verify the Issuing Wallet
Prove control over the wallet(s) with mint authority. Bluprynt supports three verification methods:
Wallet extension — Sign via MetaMask, Phantom, or other browser wallets. This is a non-transactional signature — no assets are moved or at risk.
Command line — Sign with CLI from a wallet that holds mint authority. Also non-transactional.
HSM — Send a no-op transaction using a hardware security module with a Bluprynt ID-linked signature. Designed for institutional issuers with HSM-based key management.
The system verifies both mint authority and freeze authority, where applicable, for the connected wallets.
Step 4: Complete Business Verification
If your organization hasn't already completed KYB when creating your Bluprynt account, you'll do it here. Required information:
Company data: company name, country, registration number, location of registration, website, legal address. Optionally, a Legal Entity Identifier (LEI).
Company documents (any one of the following): certificate of incorporation or registration, memorandum or articles of incorporation, association, or registration, or a recent excerpt from a state company registry.
Email verification: Bluprynt sends a confirmation email with a code to verify your contact on the platform.
Once submitted, the information is reviewed against company registries and internationally accredited sanctions lists before the business entity status is marked as "Verified."
Step 5: Submit the Asset
With all sections complete, click "Submit" to finalize the KYI process. The asset goes into "Pending" status and is typically approved within one business day. Bluprynt will reach out if additional information is needed.
You'll need to accept that your data will be published to the relevant blockchain attestation service and will be publicly visible.
Step 6: Attestation Generated
Once approved:
The asset receives its own W3C DID and ONCHAINID-compatible identity
A KYI attestation linking the issuer's identity to the asset's identity is created and published onchain
The asset appears on the Bluprynt Registry with a dedicated profile page
The KYI attestation and asset identity are accessible via the KYI API
What a KYI Attestation Contains
The KYI attestation creates the foundational link between three entities:
The off-chain entity — the asset issuer and its legal status
The on-chain asset — the token contract and issuing wallet
The asset's disclosures and licenses — connected via Smart Disclosures attestations
This three-way link is what makes all other Bluprynt credentials possible. Proof of Collateral, Proof of Insurance, and Proof of Integrity all build on the identity foundation that KYI establishes.
Supported Chains
KYI attestations can be published on:
Solana — via the Solana Attestation Service (SAS)
Ethereum and EVM-compatible chains — via the Ethereum Attestation Service (EAS)
Stellar
Avalanche
Aptos
Additional chain support is added based on demand and attestation service availability.
KYI API
The KYI API enables partners to programmatically verify whether assets are KYI-authenticated. See the full API Reference for endpoints, authentication, and response schemas.
Integration Options
KYI attestations are designed to be integrated by platforms that need to verify token legitimacy and issuer identity:
Block explorers — display which tokens are KYI-verified
Token listing services — prevent copycat or fraudulent submissions
Wallets and dApps — warn users or restrict interaction with unauthenticated tokens
DeFi protocols — require KYI as a prerequisite for protocol participation
Attestations can be queried via the API or linked to token metadata, and are compatible with EVM, Solana, and ACE-enabled environments.
Partner With Us
If you operate a block explorer, listing platform, or wallet and are interested in surfacing KYI verifications for your users, reach out to our integrations team at team@bluprynt.com.
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