Pith Number

pith:225MHKTL

pith:2019:225MHKTLGCZ7U3SJSDDACOBKXZ

not attested not anchored not stored refs pending

The Emergence of the First Star-free Atomic Cooling Haloes in the Universe

Brian W. O'Shea (Michigan State), John A. Regan (Dublin City University), John H. Wise (Georgia Tech), Michael L. Norman (UCSD)

arxiv:1908.02823 v2 · 2019-08-07 · 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{225MHKTLGCZ7U3SJSDDACOBKXZ}

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.

Cited by

1 paper in Pith

Direct Collapse Black Hole Candidates from Decaying Dark Matter

Receipt and verification

First computed	2026-07-05T00:33:14.940928Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d6bac3aa6b30b3fa6e4990c601382abe7c02844a7ee2a58901f8b045dc295da4

Aliases

arxiv: 1908.02823 · arxiv_version: 1908.02823v2 · doi: 10.48550/arxiv.1908.02823 · pith_short_12: 225MHKTLGCZ7 · pith_short_16: 225MHKTLGCZ7U3SJ · pith_short_8: 225MHKTL

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/225MHKTLGCZ7U3SJSDDACOBKXZ \
  | 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: d6bac3aa6b30b3fa6e4990c601382abe7c02844a7ee2a58901f8b045dc295da4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "742182eb1483bc2ed08b5a294ce2cab3a1c2e6859519273020de10bd1cdc5235",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2019-08-07T20:21:25Z",
    "title_canon_sha256": "a5f95914e873f660c1f3944e07be67a464cfeb5a7fc5c4ec868038cb338ab45f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.02823",
    "kind": "arxiv",
    "version": 2
  }
}