Pith Number

pith:PMY2ZVJR

pith:2012:PMY2ZVJR4X2WAEJMMWISNEK6KI

not attested not anchored not stored refs pending

Cosmic histories of star formation and reionization: An analysis with a power-law approximation

K. S. Cheng, M. C. Chu, S. Yeung, Yun-Wei Yu

arxiv:1207.2526 v2 · 2012-07-11 · 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{PMY2ZVJR4X2WAEJMMWISNEK6KI}

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	2026-05-18T03:49:21.545734Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7b31acd531e5f560112c659126915e521a2a092a08164a7b155c3fab7932e4bf

Aliases

arxiv: 1207.2526 · arxiv_version: 1207.2526v2 · doi: 10.48550/arxiv.1207.2526 · pith_short_12: PMY2ZVJR4X2W · pith_short_16: PMY2ZVJR4X2WAEJM · pith_short_8: PMY2ZVJR

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/PMY2ZVJR4X2WAEJMMWISNEK6KI \
  | 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: 7b31acd531e5f560112c659126915e521a2a092a08164a7b155c3fab7932e4bf

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3d436ab6eb572be9e58d3a519c01f79969cb367c6776b3019034adae16f2b116",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2012-07-11T02:03:57Z",
    "title_canon_sha256": "c2c10e7da17eff8494764815686f4e172b73aa39c51af2858a49ab56def562e0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1207.2526",
    "kind": "arxiv",
    "version": 2
  }
}