Pith Number

pith:3JQ2VDTH

pith:2014:3JQ2VDTH74LYI27TZSNJYFCDH7

not attested not anchored not stored refs pending

The First Billion Years project: birthplaces of direct collapse black holes

Bhaskar Agarwal, Claudio Dalla Vecchia, Jan-Pieter Paardekooper, Jarrett L. Johnson, Sadegh Khochfar

arxiv:1403.5267 v2 · 2014-03-20 · 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{3JQ2VDTH74LYI27TZSNJYFCDH7}

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	2026-05-18T00:45:54.732960Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

da61aa8e67ff17846bf3cc9a9c14433fc210ee91ddccfedd0d07d26b9104e686

Aliases

arxiv: 1403.5267 · arxiv_version: 1403.5267v2 · doi: 10.48550/arxiv.1403.5267 · pith_short_12: 3JQ2VDTH74LY · pith_short_16: 3JQ2VDTH74LYI27T · pith_short_8: 3JQ2VDTH

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/3JQ2VDTH74LYI27TZSNJYFCDH7 \
  | 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: da61aa8e67ff17846bf3cc9a9c14433fc210ee91ddccfedd0d07d26b9104e686

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2122e790d578e57ab7ad39b516ce575e08cc98ecfb37771a2a13b0db71b2ff3d",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2014-03-20T20:00:33Z",
    "title_canon_sha256": "b6bba679be4da5dc7f94733a8f8b697e44b3279afd7df950d229d978c91d715b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1403.5267",
    "kind": "arxiv",
    "version": 2
  }
}