Pith Number

pith:FVLEQHZN

pith:2026:FVLEQHZNVDNWWKMRJOPWTFPOPI

not attested not anchored not stored refs pending

Pebbles to Gems: Intermediate-mass black holes in the first star clusters

Alessandro Lupi, Benedetta Mestichelli, Boyuan Liu, Manuel Arca Sedda, Marica Branchesi, Marta Volonteri, Michela Mapelli, Ralf S. Klessen, Shingo Hirano, Stefano Torniamenti, Tomoaki Ishiyama, Veronika Lipatova

arxiv:2607.03536 v1 · 2026-07-03 · astro-ph.GA · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FVLEQHZNVDNWWKMRJOPWTFPOPI}

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	2026-07-07T02:17:52.400794Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2d56481f2da8db6b29914b9f6995ee7a2a05a5eb34d7549b0b0e50102a9f2a79

Aliases

arxiv: 2607.03536 · arxiv_version: 2607.03536v1 · doi: 10.48550/arxiv.2607.03536 · pith_short_12: FVLEQHZNVDNW · pith_short_16: FVLEQHZNVDNWWKMR · pith_short_8: FVLEQHZN

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/FVLEQHZNVDNWWKMRJOPWTFPOPI \
  | 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: 2d56481f2da8db6b29914b9f6995ee7a2a05a5eb34d7549b0b0e50102a9f2a79

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b94ec26a937307126a932a04e4c688dc685fe3b06ec28971f23ca9bf43ece771",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2026-07-03T18:00:02Z",
    "title_canon_sha256": "e19dbed9aa572c03e11a901139c8ab86f92f82c8366f19d8553fa16fda5c3fe2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2607.03536",
    "kind": "arxiv",
    "version": 1
  }
}