Pith Number

pith:X4LLH2H4

pith:2009:X4LLH2H4V7QRRFACCGM6EP6KU7

not attested not anchored not stored refs pending

A glimpse of the end of the dark ages: the gamma-ray burst of 23 April 2009 at redshift 8.3

A. Allan, A. Cucchiara, A. de Ugarte Postigo, A. J. Adamson, A. J. Castro Tirado, A. J. Levan, A. M. Soderberg, A. S. Fruchter, A. S. Moskvitin, A. W. Stephens, B. Cavanagh, B. E. Penprase, B. P. Schmidt, C. Wolf, D. B. Fox, D. N. Burrows, D. Perley, D. Watson, E. Berger, E. Rol, E. Westra, F. Olivares, G. Stratta, H. A. Krimm, J. Duke, J. Farihi, J. Gorosabel, J. Greiner, J. Hjorth, J. Kennea, J. P. U. Fynbo, J. R. Maund, J. S. Bloom, J. Sollerman, K. Roth, K. Wiersema, M. A. Dopita, M. N. Bremer, M. Perri, N. Gehrels, N. R. Tanvir, P. Evans, P. Jakobsson, P. Podsiadlowski, P. Schady, R. A. M. J. Wijers, R. E. Rutledge, R. J. Foley, R. L. C. Starling, R. Willingale, S. B. Cenko, S. Klose, S. R. Kulkarni, S. T. Holland, T. A. Fatkhullin, T. Kerr, T. Kruehler, T. Naylor, T. N. Ukwatta, T. Sakamoto, T. Wold, V. N. Komarova

arxiv:0906.1577 v2 · 2009-06-08 · astro-ph.CO · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{X4LLH2H4V7QRRFACCGM6EP6KU7}

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

2 papers in Pith

Gamma-ray bursts reveal the history and faint contributors of cosmic reionization

Interstellar dust production, destruction and effects of dust depletion in galaxies

Receipt and verification

First computed	2026-07-04T17:16:50.629911Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bf16b3e8fcafe11894021199e23fcaa7c4a71744c0d6d862847302c01495ad13

Aliases

arxiv: 0906.1577 · arxiv_version: 0906.1577v2 · doi: 10.48550/arxiv.0906.1577 · pith_short_12: X4LLH2H4V7QR · pith_short_16: X4LLH2H4V7QRRFAC · pith_short_8: X4LLH2H4

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/X4LLH2H4V7QRRFACCGM6EP6KU7 \
  | 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: bf16b3e8fcafe11894021199e23fcaa7c4a71744c0d6d862847302c01495ad13

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "da452d9ed13029114d79e5af2631f777fbd5f1ec0c3b69da0f894faf1b187cb1",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-06-08T20:17:32Z",
    "title_canon_sha256": "62e2f3de4dadd30629baf85e49d8346d1c3a34c08dc3fb7c1ba1342d9fbaab04"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0906.1577",
    "kind": "arxiv",
    "version": 2
  }
}