Pith Number

pith:XZ7MISX2

pith:2011:XZ7MISX2FHMOGWLXDEZYYAZVH6

not attested not anchored not stored refs pending

A Spectroscopic and Photometric Survey of Novae in M31

A. V. Filippenko, A. W. Shafter, K. A. Misselt, K. Hornoch, M. F. Bode, M. J. Darnley, R. A. Hounsell, R. Chornock, R. Ciardullo, T. Matheson

arxiv:1104.0222 v1 · 2011-04-01 · 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{XZ7MISX2FHMOGWLXDEZYYAZVH6}

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.

Cited by

1 paper in Pith

The Recurrent Nova Population in M31

Receipt and verification

First computed	2026-05-18T02:02:41.390739Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

be7ec44afa29d8e3597719338c03353fa252b24c5ab41bba20693d1a606b71ab

Aliases

arxiv: 1104.0222 · arxiv_version: 1104.0222v1 · doi: 10.48550/arxiv.1104.0222 · pith_short_12: XZ7MISX2FHMO · pith_short_16: XZ7MISX2FHMOGWLX · pith_short_8: XZ7MISX2

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/XZ7MISX2FHMOGWLXDEZYYAZVH6 \
  | 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: be7ec44afa29d8e3597719338c03353fa252b24c5ab41bba20693d1a606b71ab

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "418d1e44b01797c999201be3387649dbe1b39d4931b719b3fa9a3ffe73322086",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2011-04-01T17:21:41Z",
    "title_canon_sha256": "35811c92d76f34a74ed89cbcc3f387bd612fa0172229348150bcce0b311616ce"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1104.0222",
    "kind": "arxiv",
    "version": 1
  }
}