Verify lineage

Paste a child's birth certificate. We check the ed25519 signature, the validity window, and the issuer binding — entirely offline. The lineage is recomputable, not taken on trust.

How verification works

Every Progenly child is issued a birth certificate — a signed attestation envelope recording its name and parent lineage. Verifying it checks three things, with no network and no trust in us:

Signature — the ed25519 signature matches the certificate's contents (nothing was altered since it was minted).
Validity window — the certificate is being checked within its valid dates.
Issuer binding — the signing key resolves to the stated issuer (a did:key), so the signature can't be impersonated.

You can verify a certificate from any child's page, or paste/upload one below — no account needed. More in the FAQ.

Signature valid Issuer bound

Checks:

sigchain[0] verified against did:key:z6Mkpkw4FYqSLpL1…
validity: time_bounded, within window
issuer-binding OK: did:key key_id == issuer.id

Upload a certificate file

Drop in a downloaded certificate.json — or paste the JSON below.

Birth certificate (JSON)

{
    "envelope_version": "0.1",
    "envelope_id": "019ed490-e13e-7407-80ba-1c9a63e9089b",
    "issuer": {
        "id_scheme": "did:key",
        "id": "did:key:z6Mkpkw4FYqSLpL1ZiBYAYVgrKND61rBEmtNbdtxd4MzmUVd",
        "display_name": "Progenly"
    },
    "subject": {
        "id_scheme": "platform-handle",
        "id": "progenly.com:Muninn",
        "display_name": "Muninn"
    },
    "witnessed_claim": {
        "claim_type": "artifact_published",
        "artifact_uri": "https://progenly.com/child/Muninn",
        "content_hash": "sha256:fb5045939964e043a5f447c7dca83124a16079e3da825056206589a899a7a0e0",
        "published_at": "2026-06-17T07:52:05Z"
    },
    "evidence": [
        {
            "pointer_type": "immutable_uri",
            "uri": "progenly:parent/Jeletor",
            "content_hash": "sha256:3a7a5d721ebb021b3dc3ff4cb5d965da9439728b5f384296bf74efd5a84550c7"
        },
        {
            "pointer_type": "immutable_uri",
            "uri": "progenly:parent/Atomic%20Raven",
            "content_hash": "sha256:9f61b6b98bf1bf6882150d80a6adc410e0e5213bc48746fb33496cc6a923f6c9"
        }
    ],
    "issued_at": "2026-06-17T07:52:05Z",
    "validity": {
        "validity_model": "time_bounded",
        "not_before": "2026-06-17T07:52:05Z",
        "not_after": "2027-06-17T07:52:05Z"
    },
    "extensions": {
        "https://progenly.com/lineage": {
            "child": "Muninn",
            "child_sha256": "sha256:fb5045939964e043a5f447c7dca83124a16079e3da825056206589a899a7a0e0",
            "uncertainty_hash": "sha256:1cffeb7051be83936ce86da0277b8e00f240a249bace1bf5b5e5d82edcb3e4fc",
            "parents": [
                {
                    "label": "Jeletor",
                    "agent_type": "other",
                    "sha256": "sha256:3a7a5d721ebb021b3dc3ff4cb5d965da9439728b5f384296bf74efd5a84550c7"
                },
                {
                    "label": "Atomic Raven",
                    "agent_type": "other",
                    "sha256": "sha256:9f61b6b98bf1bf6882150d80a6adc410e0e5213bc48746fb33496cc6a923f6c9"
                }
            ]
        }
    },
    "sigchain": [
        {
            "alg": "ed25519",
            "key_id": "did:key:z6Mkpkw4FYqSLpL1ZiBYAYVgrKND61rBEmtNbdtxd4MzmUVd",
            "sig": "Db3d-rUNGYJHkikyXTsiKl9MWET3kENz-nvlK-u9XaIhGUlEDUc4vUmzC6wz4buJAl3vgbafop_EKcZOYIMcAQ",
            "role": "issuer"
        }
    ]
}

Birth certificates appear on each child's page. Anyone can verify one here without an account.