Pith Number

pith:NPQBMNOX

pith:2012:NPQBMNOXLJWS7TODSTGSA3VLD4

not attested not anchored not stored refs pending

Light Echoes of Transients and Variables in the Local Universe

A. Rest, B. Sinnott, D. L. Welch

arxiv:1204.1341 v1 · 2012-04-05 · 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{NPQBMNOXLJWS7TODSTGSA3VLD4}

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	2026-05-18T01:57:56.469485Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6be01635d75a6d2fcdc394cd206eab1f05b03bed7b0c7f2a370aa8c05d9734da

Aliases

arxiv: 1204.1341 · arxiv_version: 1204.1341v1 · doi: 10.48550/arxiv.1204.1341 · pith_short_12: NPQBMNOXLJWS · pith_short_16: NPQBMNOXLJWS7TOD · pith_short_8: NPQBMNOX

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/NPQBMNOXLJWS7TODSTGSA3VLD4 \
  | 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: 6be01635d75a6d2fcdc394cd206eab1f05b03bed7b0c7f2a370aa8c05d9734da

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f5a133bdce433a9182c24e0cc9114e0c7ec04845add885c1cbc85cc7e43ecffe",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2012-04-05T20:00:02Z",
    "title_canon_sha256": "34a735094b3991af698c26b3d31b25c9c3ec844f31b6978a4fa2e12608539dd4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1204.1341",
    "kind": "arxiv",
    "version": 1
  }
}