Pith Number

pith:4CE7IROD

pith:2017:4CE7IRODZ3NOQ7Y6SI3QLMPKWP

not attested not anchored not stored refs pending

Extragalactic Background Light: a measurement at 400 nm using dark cloud shadow I. Low surface brightness spectrophotometry in the area of Lynds 1642

(2) South African Astronomical Observatory, 3), (3) Southern African Large Telescope, (4) Astronomisches Institut, Cape Town, Ch. Leinert (5) ((1) Department of Physics, Finland, Germany), Germany (5) Max-Planck-Institut f\"ur Astronomie, G. von Appen-Schnur (4), Heidelberg, K. Lehtinen (1), K. Mattila (1), P. V\"ais\"anen (2, Ruhr-Universit\"at Bochum, South Africa, University of Helsinki

arxiv:1705.10681 v1 · 2017-05-30 · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4CE7IRODZ3NOQ7Y6SI3QLMPKWP}

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	2026-05-18T00:39:34.594181Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e089f445c3cedae87f1e923705b1eab3e567b50a022d841c8e75fd8b6188c026

Aliases

arxiv: 1705.10681 · arxiv_version: 1705.10681v1 · doi: 10.48550/arxiv.1705.10681 · pith_short_12: 4CE7IRODZ3NO · pith_short_16: 4CE7IRODZ3NOQ7Y6 · pith_short_8: 4CE7IROD

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/4CE7IRODZ3NOQ7Y6SI3QLMPKWP \
  | 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: e089f445c3cedae87f1e923705b1eab3e567b50a022d841c8e75fd8b6188c026

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5e523c2904e193e587ae0a8093049e3121ac99c39294891c92def8f8e52eee9c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2017-05-30T14:55:38Z",
    "title_canon_sha256": "29e08d6e0807026aa358e72eea78ee1444a16b9bcfe5536b96ec5a684e034ff6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1705.10681",
    "kind": "arxiv",
    "version": 1
  }
}