Pith Number

pith:ZEBV2OON

pith:2021:ZEBV2OONWH7VH2LKAQZ6GOD2AL

not attested not anchored not stored refs pending

No Black Holes in NGC 6397

Carl L. Rodriguez, Claire S. Ye, Frederic A. Rasio, Giacomo Fragione, Kyle Kremer, Newlin Weatherford, Nicholas Z. Rui, Sourav Chatterjee

arxiv:2103.06273 v1 · 2021-03-10 · astro-ph.GA · 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{ZEBV2OONWH7VH2LKAQZ6GOD2AL}

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	2026-07-05T09:09:47.942981Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c9035d39cdb1ff53e96a0433e3387a02cde58d1bd59505806eefe8e554a49368

Aliases

arxiv: 2103.06273 · arxiv_version: 2103.06273v1 · doi: 10.48550/arxiv.2103.06273 · pith_short_12: ZEBV2OONWH7V · pith_short_16: ZEBV2OONWH7VH2LK · pith_short_8: ZEBV2OON

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/ZEBV2OONWH7VH2LKAQZ6GOD2AL \
  | 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: c9035d39cdb1ff53e96a0433e3387a02cde58d1bd59505806eefe8e554a49368

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e259cf7bbb08ac8c1aae22fb6f826c4451f33a9dba082d77684072b677140025",
    "cross_cats_sorted": [
      "astro-ph.HE",
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2021-03-10T19:00:00Z",
    "title_canon_sha256": "8cdd373cc097afbcc17736219a005146c5a01ead801e294d39f36c80eb0e78ee"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2103.06273",
    "kind": "arxiv",
    "version": 1
  }
}