Pith Number

pith:2SZJZ3S6

pith:2017:2SZJZ3S67SBSOVKNL2KBD62BGP

not attested not anchored not stored refs pending

The binary fraction of planetary nebula central stars: the promise of VPHAS+

Albert Zijlstra, David J. Frew, Helen Barker, J. E. Drew, Jochen Eisl\"offel, Orsola De Marco, Quentin A. Parker, R. L. M. Corradi

arxiv:1712.03194 v1 · 2017-12-08 · 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{2SZJZ3S67SBSOVKNL2KBD62BGP}

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	2026-05-18T00:00:35.379854Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d4b29cee5efc8327554d5e9411fb4133f38c3aa5e18178f9bbf02e07041ad45a

Aliases

arxiv: 1712.03194 · arxiv_version: 1712.03194v1 · doi: 10.48550/arxiv.1712.03194 · pith_short_12: 2SZJZ3S67SBS · pith_short_16: 2SZJZ3S67SBSOVKN · pith_short_8: 2SZJZ3S6

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/2SZJZ3S67SBSOVKNL2KBD62BGP \
  | 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: d4b29cee5efc8327554d5e9411fb4133f38c3aa5e18178f9bbf02e07041ad45a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c5e4821c4b1bf2a9291613166868aeefce6ec81b1d1246e883867ab51435b5a7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2017-12-08T17:38:07Z",
    "title_canon_sha256": "9c53c130996262d7057b9789d3353d36ff6d08dcaf2e3cac6b0d2d7907a54615"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1712.03194",
    "kind": "arxiv",
    "version": 1
  }
}