Chunkcore — public file endpoint
cdn16.chunkcore.dev

Reference objects for transfer validation and storage checks.
Files contain deterministic synthetic data; they are not executable applications.
This endpoint is read-only. Uploads and user accounts are not provided.
1 MiB = 1,048,576 bytes.

Objects:
volume-1m-943b26e7b807.bin: 1048576 bytes; SHA-256 a13ee7434ba2b90a5ded764e41bd406ac4b6da895aad939daf299273923f3943
parcel-16m-943b26e7b807.bin: 16777216 bytes; SHA-256 dbf5df4ff5c0d3b775af0853aacb7df39008dcee1d5417f9dd90823213ffc2f7
object-64m-943b26e7b807.bin: 67108864 bytes; SHA-256 b74ea4514a491706c4f2436009cf5d3344dd2a05f39530af00ede0bd8e432594
block-256m-943b26e7b807.bin: 268435456 bytes; SHA-256 791923360070fac45ac3305a5938b9554130a8902efeebeb8998f9e1bbd4c3c3

Download one object:
curl --fail --location --output volume-1m-943b26e7b807.bin https://cdn16.chunkcore.dev/files/v2/943b26e7b807/volume-1m-943b26e7b807.bin

Resume an interrupted download:
curl --fail --location --continue-at - --output block-256m-943b26e7b807.bin https://cdn16.chunkcore.dev/files/v2/943b26e7b807/block-256m-943b26e7b807.bin

Verify a downloaded object:
printf '%s  %s\n' 'a13ee7434ba2b90a5ded764e41bd406ac4b6da895aad939daf299273923f3943' 'volume-1m-943b26e7b807.bin' | sha256sum --check

Verify against the manifest:
curl --fail --location --output SHA256SUMS https://cdn16.chunkcore.dev/integrity/943b26e7b807/SHA256SUMS
sha256sum --check --ignore-missing SHA256SUMS

HEAD returns metadata without a body. Range requests return HTTP 206.
Requests beyond the end of an object return HTTP 416.
Use If-None-Match with the current ETag for HTTP 304 without a body.
The optional browser connection check receives one 8 MiB sample per click.
The result includes request latency and does not describe a bandwidth guarantee.