Pith Number

pith:DUQNQNFA

pith:2016:DUQNQNFANFYAPYMJ5U4P6UFT5Q

not attested not anchored not stored refs pending

G345.45+1.50: An expanding ring-like structure with massive star formation

Cristian Lopez-Calderon, Guido Garay, Itziar de Gregorio-Monsalvo, Lars-Ake Nyman, Leonardo Bronfman, Per Bergman

arxiv:1609.00449 v1 · 2016-09-02 · 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{DUQNQNFANFYAPYMJ5U4P6UFT5Q}

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	2026-05-18T01:00:25.214409Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1d20d834a0697007e189ed38ff50b3ec1f39ca3fb1d528a7501ee05da1fc1b30

Aliases

arxiv: 1609.00449 · arxiv_version: 1609.00449v1 · doi: 10.48550/arxiv.1609.00449 · pith_short_12: DUQNQNFANFYA · pith_short_16: DUQNQNFANFYAPYMJ · pith_short_8: DUQNQNFA

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/DUQNQNFANFYAPYMJ5U4P6UFT5Q \
  | 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: 1d20d834a0697007e189ed38ff50b3ec1f39ca3fb1d528a7501ee05da1fc1b30

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "61a18b95f6e0570020ae4725ef61a0ebb9ab02c6005d0f1e5d682f973541494a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2016-09-02T02:35:16Z",
    "title_canon_sha256": "df9f9f8e8383146b8c4821b06b9bf4514bd6a028f65627ff092613dc1a4963d3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1609.00449",
    "kind": "arxiv",
    "version": 1
  }
}