Trust anchored by issuers. Open to everyone.
chainBreed is a layer that makes existing breed credentials permanently verifiable. The registries you already trust become unforgeable; the verification becomes free for anyone.
Three principles, no surprises.
chainBreed is intentionally narrow. It does one thing well: it takes a credential etched by a recognized authority and makes the authority's signature on it impossible to fake or alter, forever.
The issuer is the anchor
Trust starts with the issuing body — a breed registry, a kennel club, a brand inspector, a health-testing lab. chainBreed doesn't replace them; we give them a tamper-proof way to publish what they already certify.
Polygon makes the proof permanent
Each credential's cryptographic hash, issuer address, and metadata are written to the BreedRegistry contract on Polygon mainnet. The proof outlives the company that put it there.
Anyone can verify, without an account
Every credential has a public verifier URL and a QR code. Any phone camera reads it. No login. No paywall. Verification is a public utility.
The blockchain stores the proof. The database stores the file.
Putting every byte of a credential on-chain would be slow, expensive, and a privacy problem. Instead, the cryptographic hash goes on-chain — that's what makes tampering detectable — and the full record stays in our hardened backend, accessible to anyone with the verifier URL.
On Polygon
- Credential hash (keccak256 of canonical payload)
- Issuer wallet address
- Species and credential type
- DNA verification flag
- Etch timestamp
- Revocation status
In our backend
- The credential payload itself (human-readable details)
- Animal photographs and documents
- Issuer organization profile
- Pedigree relationship graph
- Audit logs of every dashboard action
- Email and billing records
Mature, EVM-compatible, fractions of a cent per credential.
We evaluated Ethereum mainnet (too expensive), Solana (different toolchain, lower long-term liquidity guarantees), and a handful of L2s before settling on Polygon PoS.
Etching gas runs a fraction of a cent. We absorb gas via the breedRelay wallet — issuers never touch POL.
Fully EVM-compatible. Auditable in Solidity. PolygonScan gives anyone a public block explorer for free.
Polygon has cleared more than 5 billion transactions since 2020 and is the largest production-deployed EVM L2. Credentials anchored today will still be verifiable when chainBreed is no longer in business.
Scan, see, decide — in under five seconds.
- Step 1
Scan
A buyer points their phone camera at the QR code on the registration paper, kennel card, or sales catalog page.
- Step 2
Open
The phone resolves the chainBreed verifier URL — either in the free verifier app, or in any browser.
- Step 3
Re-check on-chain
The app calls BreedRegistry.isValidCredential() against Polygon and re-hashes the canonical payload. If anything has been tampered with, the check fails.
- Step 4
See the truth
Issuer, credential type, etch date, DNA status, and revocation status — displayed in plain English with a one-tap link to the on-chain transaction.
Every animal is a node. Every credential is a link.
A registration credential links to its sire and dam credentials, which link to theirs. The full pedigree tree is a navigable graph of on-chain anchors — a buyer can walk back four generations and confirm every link was etched by the right authority. DNA confirmations flagged on individual links upgrade the entire branch from claimed to proven.
Ready to dig deeper?
The security page lists the contract addresses, network details, and how anyone can verify a credential without a chainBreed account.