Pith Number

pith:66F2G6CM

pith:2019:66F2G6CM6NBSA2Q2OGEKUDHH43

not attested not anchored not stored refs pending

The post-common-envelope binary nucleus of the planetary nebula IC~4776: Neither an anomalously long orbital period nor a Wolf-Rayet binary

B. Miszalski, H. Van Winckel, J. Miko{\l}ajewska, R. Manick

arxiv:1905.03714 v1 · 2019-05-09 · 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{66F2G6CM6NBSA2Q2OGEKUDHH43}

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	2026-05-17T23:45:26.491186Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f78ba3784cf343206a1a7188aa0ce7e6dd3d7c7dbd6c9e1e6f36f90b51a9507d

Aliases

arxiv: 1905.03714 · arxiv_version: 1905.03714v1 · doi: 10.48550/arxiv.1905.03714 · pith_short_12: 66F2G6CM6NBS · pith_short_16: 66F2G6CM6NBSA2Q2 · pith_short_8: 66F2G6CM

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/66F2G6CM6NBSA2Q2OGEKUDHH43 \
  | 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: f78ba3784cf343206a1a7188aa0ce7e6dd3d7c7dbd6c9e1e6f36f90b51a9507d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5e877dbe7d1fdaa5f6643d6c20426077c2a23a3fb3c7266d699a3ca1eb56998e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2019-05-09T15:52:28Z",
    "title_canon_sha256": "7e8fb72560c1265ba31608c112958c7b118b4a4c91b8e9c8253bccdc66aa8d14"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1905.03714",
    "kind": "arxiv",
    "version": 1
  }
}