Pith Number

pith:63GUZPSQ

pith:2021:63GUZPSQ6PAMC5T7RY4KWQWK64

not attested not anchored not stored refs pending

Colour remote sensing of the impact of artificial light at night (II): Calibration of DSLR-based images from the International Space Station

Alejandro S\'anchez de Miguel, Donald R.Pettit, Francisco Oca\~na, Jaime Zamorano, Jes\'us Gallego, Jonathan Bennie, Kevin J.Gaston, Martin Aub\'e, William L.Stefanov

arxiv:2108.07050 v1 · 2021-08-16 · astro-ph.IM · physics.app-ph · physics.ins-det · physics.optics

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{63GUZPSQ6PAMC5T7RY4KWQWK64}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-07-05T03:06:00.544224Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f6cd4cbe50f3c0c1767f8e38ab42caf705e47b951706d7aceb0090b2eb2eac19

Aliases

arxiv: 2108.07050 · arxiv_version: 2108.07050v1 · doi: 10.48550/arxiv.2108.07050 · pith_short_12: 63GUZPSQ6PAM · pith_short_16: 63GUZPSQ6PAMC5T7 · pith_short_8: 63GUZPSQ

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/63GUZPSQ6PAMC5T7RY4KWQWK64 \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: f6cd4cbe50f3c0c1767f8e38ab42caf705e47b951706d7aceb0090b2eb2eac19

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "95eb5be2b389814b28748589e86b389a3802bae26537fc629c1a6adfa29b062a",
    "cross_cats_sorted": [
      "physics.app-ph",
      "physics.ins-det",
      "physics.optics"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2021-08-16T12:41:16Z",
    "title_canon_sha256": "64b7c7d9168720194287405f2c1ceae9c18f08780d88f0b3cafc445717a68cd6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2108.07050",
    "kind": "arxiv",
    "version": 1
  }
}