Pith Number

pith:2556E4KZ

pith:2015:2556E4KZZAFVG4XQWLUGUAAQFE

not attested not anchored not stored refs pending

Simulating the 21cm forest detectable with LOFAR and SKA in the spectra of high-z GRBs

10), (10) Rudjer Boskovic Institute, (11) Stockholm University, (12) ASTRON & IBM Center for Exascale technology, (13) Universitat de Barcelona, (14) Leiden University, (2) University of Tokyo, (3) University College London, 4), (4) Rhodes University, (5) Kapteyn Astronomical Institute, (6) SKA SA, (7) The University of Nottingham, 8, 8), (8) ASTRON, (9) University of Sussex, A.G. de Bruyn (5, A. Ghosh (5), A. Maselli (13), A.R. Offringa (5, B. Ciardi (1), Croatia, E. Chapman (3), E.R. Fernandez (5), F.B. Abdalla (3, G. Bernardi (6), Germany, G.J.A. Harker (3), G. Mellema (11), H. Jensen (11), H. Vedantham (5), I.T. Iliev (9), Japan, J.S. Bolton (7), J. Schaye (14), K. Asad (5), L. Graziani (1), L.V.E. Koopmans (5), M. Brentjens (8), O. Martinez (5), R. Thomas (5), S. Daiboo (5), S. Inoue (2), S. Kazemi (12), South Africa, Spain, Sweden, S. Yatawatta (8), S. Zaroubi (5) ((1) MPA, the Netherlands), The Netherlands, UK, V. Jelic (5, V.N. Pandey (5)

arxiv:1504.07448 v2 · 2015-04-28 · 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{2556E4KZZAFVG4XQWLUGUAAQFE}

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	2026-05-18T01:35:10.241365Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d77be27159c80b5372f0b2e86a00102912e871f6d4ac642472058a4da1370dbc

Aliases

arxiv: 1504.07448 · arxiv_version: 1504.07448v2 · doi: 10.48550/arxiv.1504.07448 · pith_short_12: 2556E4KZZAFV · pith_short_16: 2556E4KZZAFVG4XQ · pith_short_8: 2556E4KZ

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/2556E4KZZAFVG4XQWLUGUAAQFE \
  | 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: d77be27159c80b5372f0b2e86a00102912e871f6d4ac642472058a4da1370dbc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "366994f316c2f425e0c6c6f0eede3524800b354d73c13b6db152d35348eb7f93",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2015-04-28T12:34:12Z",
    "title_canon_sha256": "5e5514633c58a0080b1a339eee4f7de8aef021829f75ef65f8620f2a6fc6eeb7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1504.07448",
    "kind": "arxiv",
    "version": 2
  }
}