Pith Number

pith:LXMPGVJY

pith:2016:LXMPGVJYQNRCIXURDBXIVX4HNS

not attested not anchored not stored refs pending

Light or heavy supermassive black hole seeds: the role of internal rotation in the fate of supermassive stars

(2) Leiden Observatory, Davide Fiacconi (1), Elena M. Rossi (2) ((1) ICS, University of Leiden), University of Zurich

arxiv:1604.03936 v2 · 2016-04-13 · astro-ph.HE · astro-ph.CO · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{LXMPGVJYQNRCIXURDBXIVX4HNS}

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	2026-05-18T01:02:44.545386Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5dd8f355388362245e91186e8adf876cb4ba742381d9c7ca9342a68e3378ed65

Aliases

arxiv: 1604.03936 · arxiv_version: 1604.03936v2 · doi: 10.48550/arxiv.1604.03936 · pith_short_12: LXMPGVJYQNRC · pith_short_16: LXMPGVJYQNRCIXUR · pith_short_8: LXMPGVJY

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/LXMPGVJYQNRCIXURDBXIVX4HNS \
  | 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: 5dd8f355388362245e91186e8adf876cb4ba742381d9c7ca9342a68e3378ed65

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b8c618bbf5b3096834f92f70e9ebc707c718d5ee12536644c19509464d77e004",
    "cross_cats_sorted": [
      "astro-ph.CO",
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2016-04-13T20:00:00Z",
    "title_canon_sha256": "581f76fae86d90a88f4831ff10de7b9c932751491f12cb9b8da14becc5bd9d3a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1604.03936",
    "kind": "arxiv",
    "version": 2
  }
}