Pith Number

pith:MGUGRH5Q

pith:2009:MGUGRH5QQ2ENXL7K5JNWZHFPMN

not attested not anchored not stored refs pending

Spectral analysis of YSOs and other emission-line stars in the North America and Pelican nebulae region

C. J. Corbally, V. Laugalys, V. Straizys

arxiv:0911.4287 v1 · 2009-11-23 · astro-ph.GA · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{MGUGRH5QQ2ENXL7K5JNWZHFPMN}

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	2026-05-18T02:34:04.088308Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

61a8689fb08688dbafeaea5b6c9caf6347d835b3d411b001bf7366f0a4c42c47

Aliases

arxiv: 0911.4287 · arxiv_version: 0911.4287v1 · doi: 10.48550/arxiv.0911.4287 · pith_short_12: MGUGRH5QQ2EN · pith_short_16: MGUGRH5QQ2ENXL7K · pith_short_8: MGUGRH5Q

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/MGUGRH5QQ2ENXL7K5JNWZHFPMN \
  | 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: 61a8689fb08688dbafeaea5b6c9caf6347d835b3d411b001bf7366f0a4c42c47

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f878cb0cf43e806b012c6deda7f39cca87bb3c44fe1a9667a6e40bb1c3a9a30a",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2009-11-23T11:44:20Z",
    "title_canon_sha256": "ac94a9fb7aadb55feddbef9538ea246611fa52566f77b8a98b809a830ca6b910"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0911.4287",
    "kind": "arxiv",
    "version": 1
  }
}