Pith Number

pith:MZSR7M4G

pith:2015:MZSR7M4G6ZYVO7BOQQP3UZB4UN

not attested not anchored not stored refs pending

A remarkable recurrent nova in M 31: The predicted 2014 outburst in X-rays with Swift

A. W. Shafter, G. Sala, I. Hachisu, J.-U. Ness, M. F. Bode, M. Henze, M. Hernanz, M. J. Darnley, M. Kato, S. C. Williams

arxiv:1504.06237 v1 · 2015-04-23 · astro-ph.HE · 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{MZSR7M4G6ZYVO7BOQQP3UZB4UN}

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	2026-05-18T01:36:13.108977Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

66651fb386f671577c2e841fba643ca3408aed087653aa9042dcb5881bdc06bb

Aliases

arxiv: 1504.06237 · arxiv_version: 1504.06237v1 · doi: 10.48550/arxiv.1504.06237 · pith_short_12: MZSR7M4G6ZYV · pith_short_16: MZSR7M4G6ZYVO7BO · pith_short_8: MZSR7M4G

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/MZSR7M4G6ZYVO7BOQQP3UZB4UN \
  | 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: 66651fb386f671577c2e841fba643ca3408aed087653aa9042dcb5881bdc06bb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "edb290c28fa2f3b916013461048fcbe71b70c1ac04a23c72353d83d88363cafc",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2015-04-23T16:03:40Z",
    "title_canon_sha256": "cf9159504636e1caf2eef75bbbfcac16cd7bf27d18ba9ac78b13c8c458d358a0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1504.06237",
    "kind": "arxiv",
    "version": 1
  }
}