Global Translation RegistryIndependent verification network

Institutional sandbox

Non-production. Use synthetic records and a sandbox credential issued by GTR. Nothing here reflects a real record or institutional acceptance.

Institutional sandbox

Test GTR verification without sending document bytes

Non-production

Use a sandbox institution ID and sandbox GTR-Institution token. If you select a file, its SHA-256 is calculated in this browser and only the digest is sent to the API.

Sandbox results are synthetic and non-production. They do not mean that any named institution accepts, endorses or requires GTR.

Optional fallback. Maximum 25 MiB. When used, bytes are sent to the authenticated sandbox hashing endpoint, hashed in memory and not persisted.

Signed webhook simulator

Generate a signed synthetic lifecycle envelope without contacting any institution endpoint or relay.