Pith Number

pith:XREP7H6I

pith:2017:XREP7H6ILASHWIO4JEXAOCTD5K

not attested not anchored not stored refs pending

First star formation in ultra-light particle dark matter cosmology

James M. Sullivan, Shingo Hirano, Volker Bromm

arxiv:1706.00435 v2 · 2017-06-01 · 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{XREP7H6ILASHWIO4JEXAOCTD5K}

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	2026-05-18T00:34:29.111222Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bc48ff9fc858247b21dc492e070a63ea834cc9842337e3c44ef91f4470301e47

Aliases

arxiv: 1706.00435 · arxiv_version: 1706.00435v2 · doi: 10.48550/arxiv.1706.00435 · pith_short_12: XREP7H6ILASH · pith_short_16: XREP7H6ILASHWIO4 · pith_short_8: XREP7H6I

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/XREP7H6ILASHWIO4JEXAOCTD5K \
  | 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: bc48ff9fc858247b21dc492e070a63ea834cc9842337e3c44ef91f4470301e47

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7ede64ed61b762b6866438f5578b7b2d105cb89c1ecb99a4a2d9e088075aed77",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2017-06-01T18:00:04Z",
    "title_canon_sha256": "9eb7278c6b5684efc4ef0e5c257e05e7f091ab04576780aa680f765bb031ef29"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1706.00435",
    "kind": "arxiv",
    "version": 2
  }
}