Pith Number

pith:3Z3KJ5DN

pith:2010:3Z3KJ5DNC3VYRDHJWF2I3CSSXN

not attested not anchored not stored refs pending

First star formation with dark matter annihilation

2), (2) Universita` dell'Insubria, (3) Institut d'Astrophysique de Paris, (4) Scuola Normale Superiore, (5) INAF/Osservatorio Astrofisico di Arcetri, (6) SISSA/ISAS, 7, (7) INAF/Osservatorio Astronomico di Padova, 8), (8) INAOE, (9) Universita` di Padova), A. Bressan (6, A. Ferrara (4), Como, E. Ripamonti (1, F. Iocco (3), Pisa, P. Marigo (9) ((1) Universita` di Milano-Bicocca, R. Schneider (5), Tonantzintla, Trieste

arxiv:1003.0676 v2 · 2010-03-02 · 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{3Z3KJ5DNC3VYRDHJWF2I3CSSXN}

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	2026-05-18T02:08:47.349046Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

de76a4f46d16eb888ce9b1748d8a52bb4577eb0a0ece37c5fc393db33d3f8586

Aliases

arxiv: 1003.0676 · arxiv_version: 1003.0676v2 · doi: 10.48550/arxiv.1003.0676 · pith_short_12: 3Z3KJ5DNC3VY · pith_short_16: 3Z3KJ5DNC3VYRDHJ · pith_short_8: 3Z3KJ5DN

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/3Z3KJ5DNC3VYRDHJWF2I3CSSXN \
  | 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: de76a4f46d16eb888ce9b1748d8a52bb4577eb0a0ece37c5fc393db33d3f8586

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7556366ef09da1125bd4cf5e12eeb1d8a4fc9d9eeb6602f194d1afd3b1cf55b8",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2010-03-02T21:02:17Z",
    "title_canon_sha256": "ac709c44d0acb048dce758cc5af3f9c68b257fc3b2c44aac001b8c10106b7f00"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1003.0676",
    "kind": "arxiv",
    "version": 2
  }
}