Pith Number

pith:D7PNMMAC

pith:2019:D7PNMMACASYZLLAUBKGCRAMRWJ

not attested not anchored not stored refs pending

Quark Novae: An Alternative Channel For the Formation of Isolated Millisecond Pulsars

Chunhua Zhu, Guoliang L\"u, Helei Liu, Lin Li, Nurimangul Nurmamat, Zhaojun Wang

arxiv:1906.09939 v1 · 2019-06-20 · astro-ph.HE · 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{D7PNMMACASYZLLAUBKGCRAMRWJ}

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	2026-07-04T23:58:52.088854Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1fded6300204b195ac140a8c288191b2420fe494d949315f11f23cafaecafe7c

Aliases

arxiv: 1906.09939 · arxiv_version: 1906.09939v1 · doi: 10.48550/arxiv.1906.09939 · pith_short_12: D7PNMMACASYZ · pith_short_16: D7PNMMACASYZLLAU · pith_short_8: D7PNMMAC

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/D7PNMMACASYZLLAUBKGCRAMRWJ \
  | 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: 1fded6300204b195ac140a8c288191b2420fe494d949315f11f23cafaecafe7c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4a6d6989d8236b3dcd689fb3ffc816311915ae07975c12015aad08dcbaf216c7",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2019-06-20T00:19:57Z",
    "title_canon_sha256": "29fefabe941c16f3e47f348c2217bb3b99c412c112d99d554b0001bba363ccc2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1906.09939",
    "kind": "arxiv",
    "version": 1
  }
}