Pith Number

pith:AN44LE6J

pith:2014:AN44LE6JWLOA4FW6SU5XUSVLBL

not attested not anchored not stored refs pending

Detecting the First Stars and Black Holes with 21-cm Cosmology

Rennan Barkana (Tel Aviv University)

arxiv:1401.7935 v2 · 2014-01-30 · 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{AN44LE6JWLOA4FW6SU5XUSVLBL}

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	2026-05-18T02:56:43.526289Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0379c593c9b2dc0e16de953b7a4aab0aeabfb1c5e1c3269c7b28cf030b947395

Aliases

arxiv: 1401.7935 · arxiv_version: 1401.7935v2 · doi: 10.48550/arxiv.1401.7935 · pith_short_12: AN44LE6JWLOA · pith_short_16: AN44LE6JWLOA4FW6 · pith_short_8: AN44LE6J

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/AN44LE6JWLOA4FW6SU5XUSVLBL \
  | 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: 0379c593c9b2dc0e16de953b7a4aab0aeabfb1c5e1c3269c7b28cf030b947395

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "840abbfd0f2a0ea696e70f1fd097c246e6cb3cec7eabd5634804cb64ba3ff1b7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2014-01-30T17:51:55Z",
    "title_canon_sha256": "9714e36592ebd4a4c3ce50ef142f2583849a1489e3787c050057b0fbb8df1f2a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1401.7935",
    "kind": "arxiv",
    "version": 2
  }
}