Pith Number

pith:NP6XPKSQ

pith:2021:NP6XPKSQG3TOP66FVB3DTESWFS

not attested not anchored not stored refs pending

No Detectable Kilonova Counterpart is Expected for O3 Neutron Star-Black Hole Candidates

Bing Zhang, He Gao, Jin-Ping Zhu, Liang-Duan Liu, Shichao Wu, Yuan-Pei Yang, Yun-Wei Yu, Zhoujian Cao

arxiv:2106.15781 v2 · 2021-06-30 · astro-ph.HE · astro-ph.SR · gr-qc

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NP6XPKSQG3TOP66FVB3DTESWFS}

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	2026-07-05T03:30:52.731953Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6bfd77aa5036e6e7fbc5a8763992562cba8862714519722014a48d248cca46b4

Aliases

arxiv: 2106.15781 · arxiv_version: 2106.15781v2 · doi: 10.48550/arxiv.2106.15781 · pith_short_12: NP6XPKSQG3TO · pith_short_16: NP6XPKSQG3TOP66F · pith_short_8: NP6XPKSQ

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/NP6XPKSQG3TOP66FVB3DTESWFS \
  | 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: 6bfd77aa5036e6e7fbc5a8763992562cba8862714519722014a48d248cca46b4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "da104d4f3041aec288847774cba580fa951f3287fde24f1bcc72328e146aa451",
    "cross_cats_sorted": [
      "astro-ph.SR",
      "gr-qc"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2021-06-30T02:24:33Z",
    "title_canon_sha256": "78692d5b17433639b67942087f53296e26c332e676e65e928dc2a6f963c55086"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2106.15781",
    "kind": "arxiv",
    "version": 2
  }
}