Pith Number

pith:K57YDIIQ

pith:2015:K57YDIIQPPIBSQ32CKSU2OSW2V

not attested not anchored not stored refs pending

Evidence for a [WR] or WEL-type binary nucleus in the bipolar planetary nebula Vy 1-2

D. R. Gon\c{c}alves, J. Alikakos, J. A. L\'opez, J. Meaburn, P. Boumis, S. Akras

arxiv:1507.00055 v1 · 2015-06-30 · 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{K57YDIIQPPIBSQ32CKSU2OSW2V}

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	2026-05-18T01:09:46.497271Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

577f81a1107bd019437a12a54d3a56d544ba7af4027d076e9a64d9ab7b83e6da

Aliases

arxiv: 1507.00055 · arxiv_version: 1507.00055v1 · doi: 10.48550/arxiv.1507.00055 · pith_short_12: K57YDIIQPPIB · pith_short_16: K57YDIIQPPIBSQ32 · pith_short_8: K57YDIIQ

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/K57YDIIQPPIBSQ32CKSU2OSW2V \
  | 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: 577f81a1107bd019437a12a54d3a56d544ba7af4027d076e9a64d9ab7b83e6da

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8eade359c560a46367773ca9929d4d1b4452d6fc0ecd02f76f9bffc96cf77aa9",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2015-06-30T22:34:04Z",
    "title_canon_sha256": "5d6174fb961733faa42cb1c505fc8c928da39dc6d0781c6753b905655445561e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1507.00055",
    "kind": "arxiv",
    "version": 1
  }
}