Pith Number

pith:IRI6L75I

pith:2002:IRI6L75IIYGEKUUMLLXNU3ZPLN

not attested not anchored not stored refs pending

Chandra Observations of the Luminous, O-Rich SNR in the Irregular Galaxy NGC 4449

D. J. Patnaude, R. A. Fesen

arxiv:astro-ph/0212409 v1 · 2002-12-18 · 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{IRI6L75IIYGEKUUMLLXNU3ZPLN}

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	2026-07-04T16:31:26.268772Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4451e5ffa8460c45528c5aeeda6f2f5b4dbed7927abbd3c458fdc9cd73f6c3e9

Aliases

arxiv: astro-ph/0212409 · arxiv_version: astro-ph/0212409v1 · doi: 10.48550/arxiv.astro-ph/0212409 · pith_short_12: IRI6L75IIYGE · pith_short_16: IRI6L75IIYGEKUUM · pith_short_8: IRI6L75I

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/IRI6L75IIYGEKUUMLLXNU3ZPLN \
  | 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: 4451e5ffa8460c45528c5aeeda6f2f5b4dbed7927abbd3c458fdc9cd73f6c3e9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f11ce7318cfe07c2ed24ccbd76d3e114e1e621725dfd64ad01fc6d8a6a7097ad",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2002-12-18T16:00:43Z",
    "title_canon_sha256": "6c6b0f484857841ffe48c7bd202e7b0dfb9c2ee6c873b0ac266a55906dd21b1d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0212409",
    "kind": "arxiv",
    "version": 1
  }
}