Pith Number

pith:2IRQJHNR

pith:2012:2IRQJHNRVY3I32HVWECI4DKEIP

not attested not anchored not stored refs pending

Planetary nebulae : getting closer to an unbiased binary fraction

D. Douchin, D. J. Frew, G. H. Jacoby, G. Jasniewicz, I. Bojicic, O. De Marco, Q. A. Parker, T. C. Hillwig

arxiv:1210.6865 v1 · 2012-10-25 · 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{2IRQJHNRVY3I32HVWECI4DKEIP}

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	2026-05-18T03:42:22.951600Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d223049db1ae368de8f5b1048e0d4443f8e601f55c021b7df22935588e5345c1

Aliases

arxiv: 1210.6865 · arxiv_version: 1210.6865v1 · doi: 10.48550/arxiv.1210.6865 · pith_short_12: 2IRQJHNRVY3I · pith_short_16: 2IRQJHNRVY3I32HV · pith_short_8: 2IRQJHNR

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/2IRQJHNRVY3I32HVWECI4DKEIP \
  | 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: d223049db1ae368de8f5b1048e0d4443f8e601f55c021b7df22935588e5345c1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "90df0c54e4365dea60acbfd100398daedb543c44a0731bd905f4795951e27e1d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2012-10-25T14:59:47Z",
    "title_canon_sha256": "20813e251aa23c61df7b3d4e35e711f8c8ee1fa77de2211d954ce4f6f5e04658"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1210.6865",
    "kind": "arxiv",
    "version": 1
  }
}