Pith Number

pith:NGF7PXT6

pith:1999:NGF7PXT6DMGR6QSJDC234Q6RPZ

not attested not anchored not stored refs pending

Detection of hard X-rays from a Class I protostar in the HH24-26 region in the Orion Molecular Cloud

Astronautical Science), F. Nagase, H. Ozawa, M. Ishida (The Institute of Space, T. Dotani, Y. Ueda

arxiv:astro-ph/9907277 v1 · 1999-07-20 · 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{NGF7PXT6DMGR6QSJDC234Q6RPZ}

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	2026-05-18T01:07:36.281005Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

698bf7de7e1b0d1f424918b5be43d17e484c171320bfc88eacc39b818311ad86

Aliases

arxiv: astro-ph/9907277 · arxiv_version: astro-ph/9907277v1 · doi: 10.48550/arxiv.astro-ph/9907277 · pith_short_12: NGF7PXT6DMGR · pith_short_16: NGF7PXT6DMGR6QSJ · pith_short_8: NGF7PXT6

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/NGF7PXT6DMGR6QSJDC234Q6RPZ \
  | 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: 698bf7de7e1b0d1f424918b5be43d17e484c171320bfc88eacc39b818311ad86

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "71b7f672978e885dd6101b9ca58acc97e33d5ac44604d98f5416a77fca73e22b",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1999-07-20T18:29:12Z",
    "title_canon_sha256": "59a45ff45ea2f8bd532ee13868ec4cde97b7b03a95d3e8444ab0daa1af33499a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9907277",
    "kind": "arxiv",
    "version": 1
  }
}