Pith Number

pith:VXSQG7WP

pith:2021:VXSQG7WPVCYT4A6R3UIWKXLBSD

not attested not anchored not stored refs pending

A black hole detected in the young massive LMC cluster NGC 1850

C. Usher, G. S. Da Costa, I. Cabrera-Ziri, M. G. Guarcello, M. Gieles, N. Bastian, S. Dreizler, S. Kamann, S. Saracino, T.-O. Husser, V. H\'enault-Brunet

arxiv:2111.06506 v1 · 2021-11-12 · astro-ph.GA · 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{VXSQG7WPVCYT4A6R3UIWKXLBSD}

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	2026-07-05T03:36:18.233818Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ade5037ecfa8b13e03d1dd11655d6190d39c6ba4080965056a349a7dfbe8328e

Aliases

arxiv: 2111.06506 · arxiv_version: 2111.06506v1 · doi: 10.48550/arxiv.2111.06506 · pith_short_12: VXSQG7WPVCYT · pith_short_16: VXSQG7WPVCYT4A6R · pith_short_8: VXSQG7WP

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/VXSQG7WPVCYT4A6R3UIWKXLBSD \
  | 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: ade5037ecfa8b13e03d1dd11655d6190d39c6ba4080965056a349a7dfbe8328e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a2d3a79e75b3fd65a3c7c9550ee7c5edad242ee2f70fe9713b86cdcd63263c7c",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2021-11-12T00:15:13Z",
    "title_canon_sha256": "137fe6ac659113d81a8890336a048e28ad02ac8e6c497ae914060fb914473ca2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2111.06506",
    "kind": "arxiv",
    "version": 1
  }
}