Inmetro Combination Beacon

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Combining beacons using Verifiable Delay Functions(VDF).

PLEASE, DO NOT USE THE BEACON GENERATED VALUES AS CRYPTOGRAPHIC KEYS.

Inmetro's Combination Beacon was designed to provide a safe combination of beacons using a Verifiable Delay Function(VDF). This prototype has been built based on Lenstra and Wesoloski’ proposal, described in this paper.

• Every 10 minutes, the prototype concatenates the latest pre-commitment published by the Nist, Chile and Inmetro
• Results are signed, stored and published together with all parameters used to execute the algorithm
• Prototype also allows a verification of the generated numbers via public API route

The service is available via a public REST API. Consumers need to provide a pulse generation time in POSIX format. See http://en.wikipedia.org/wiki/Unix_time for more information and http://www.epochconverter.com for an online timestamp converter.

Previous Pulse:
beacon.inmetro.gov.br/combination/beacon/2.0/previous/<timestamp>
Example: beacon.inmetro.gov.br/combination/beacon/2.0/previous/1712406910000

Next Pulse:
beacon.inmetro.gov.br/combination/beacon/2.0/next/<timestamp>
Example: beacon.inmetro.gov.br/combination/beacon/2.0/next/1712406910000

Last Available Pulse:
beacon.inmetro.gov.br/combination/beacon/2.0/last
Example: beacon.inmetro.gov.br/combination/beacon/2.0/last

First Pulse:
beacon.inmetro.gov.br/combination/beacon/2.0/first
Example: beacon.inmetro.gov.br/combination/beacon/2.0/first



If a request for a Pulse results in no Pulse found, a 404 response is returned.

Contact us

Inmetro Technology Lab.

Instituto Nacional de Metrologia e qualidade INMETRO