Pith Number

pith:KUUQ2WRM

pith:2023:KUUQ2WRME2SGDMYNOUYXEECFE5

not attested not anchored not stored refs pending

The extremely sharp transition between molecular and ionized gas in the Horsehead nebula

A. Abergel, C. Hern\'andez-Vera, E. Bron, E. Roueff, F. Le Petit, J. Carpenter, J. Pety, J. R. Goicoechea, K. Gordon, K. Misselt, M. Gerin, P. Gratier, T. Schirmer, V. Maillard, V. V. Guzm\'an

arxiv:2307.09540 v1 · 2023-07-18 · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{KUUQ2WRME2SGDMYNOUYXEECFE5}

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	2026-07-05T06:54:20.619565Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

55290d5a2c26a461b30d7531721045275241c54de43d797da192cf5f4d6785d9

Aliases

arxiv: 2307.09540 · arxiv_version: 2307.09540v1 · doi: 10.48550/arxiv.2307.09540 · pith_short_12: KUUQ2WRME2SG · pith_short_16: KUUQ2WRME2SGDMYN · pith_short_8: KUUQ2WRM

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/KUUQ2WRME2SGDMYNOUYXEECFE5 \
  | 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: 55290d5a2c26a461b30d7531721045275241c54de43d797da192cf5f4d6785d9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ab675ac21a1123dc9919f27502c69528e3b6016cfe0c0a4f4ad889b5acb9abe2",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2023-07-18T18:34:18Z",
    "title_canon_sha256": "00621ff8b71756f6fad5fd95676a76f486be09e9eacd38cbc1d0b1f1fb3d2268"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2307.09540",
    "kind": "arxiv",
    "version": 1
  }
}