Pith Number

pith:T5AMJATD

pith:2004:T5AMJATDEYTWEHO7G2TWAIV4QP

not attested not anchored not stored refs pending

Mc Neil's Nebula in Orion: The Outburst History

A.K. Vivas, C.Briceno, J. Hernandez (Centro de Investigaciones de Astronomia, L. Hartmann, M. Calkins (Smithsonian Astrophysical Observatory, Merida, N. Calvet, P. Berlind, S. Hoyer (Universidad Catolica de Chile), T. Megeath, USA), Venezuela)

arxiv:astro-ph/0404012 v1 · 2004-04-01 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{T5AMJATDEYTWEHO7G2TWAIV4QP}

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	2026-07-04T16:43:30.322697Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9f40c482632627621ddf36a76022bc83f839a2564238ea4a8be8e0d7048ceba2

Aliases

arxiv: astro-ph/0404012 · arxiv_version: astro-ph/0404012v1 · doi: 10.48550/arxiv.astro-ph/0404012 · pith_short_12: T5AMJATDEYTW · pith_short_16: T5AMJATDEYTWEHO7 · pith_short_8: T5AMJATD

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/T5AMJATDEYTWEHO7G2TWAIV4QP \
  | 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: 9f40c482632627621ddf36a76022bc83f839a2564238ea4a8be8e0d7048ceba2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cf775900819f1134445ede3597afe85cc0d5b6d902fa9b077d9d9c6544a9c563",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2004-04-01T04:49:12Z",
    "title_canon_sha256": "911e17a86df5a2a7448fedd1db71fe935bdb48f3c800cd5aabade07f27e9e47e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0404012",
    "kind": "arxiv",
    "version": 1
  }
}