Pith Number

pith:XVTWMS7K

pith:2012:XVTWMS7KRKXZPBROBVW6B7GEVH

not attested not anchored not stored refs pending

Monitoring the Crab Nebula with Chandra:A Search for the Location of the gamma-ray Flares

Martin C. Weisskopf

arxiv:1211.7109 v2 · 2012-11-29 · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{XVTWMS7KRKXZPBROBVW6B7GEVH}

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	2026-05-18T03:37:52.210536Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bd67664bea8aaf97862e0d6de0fcc4a9d5ccee109199292602b3d01f82351f85

Aliases

arxiv: 1211.7109 · arxiv_version: 1211.7109v2 · doi: 10.48550/arxiv.1211.7109 · pith_short_12: XVTWMS7KRKXZ · pith_short_16: XVTWMS7KRKXZPBRO · pith_short_8: XVTWMS7K

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/XVTWMS7KRKXZPBROBVW6B7GEVH \
  | 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: bd67664bea8aaf97862e0d6de0fcc4a9d5ccee109199292602b3d01f82351f85

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9722b3ef08b0a97ce55862295eb15814be47786c3271539f280c42da47d7ab23",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/publicdomain/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2012-11-29T22:34:52Z",
    "title_canon_sha256": "aea24bffd20d5842dd2b08eee39ad064041b2bae5ba5e961ebf0a5eeb5ba45b5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1211.7109",
    "kind": "arxiv",
    "version": 2
  }
}