Pith Number

pith:DJL4Q4LJ

pith:2015:DJL4Q4LJ4DUVHVRPOUBNJTASPI

not attested not anchored not stored refs pending

Probing First Galaxies and Their Impact on the Intergalactic Medium through the 21-cm Observation of the Cosmic Dawn with the SKA

Andrei Mesinger, Kyungjin Ahn, Marcelo A. Alvarez, Xuelei Chen

arxiv:1501.04141 v2 · 2015-01-17 · astro-ph.GA · 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{DJL4Q4LJ4DUVHVRPOUBNJTASPI}

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	2026-05-18T02:29:01.051684Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1a57c87169e0e953d62f7502d4cc127a3a72cbade38b31a4409fe7add02b277a

Aliases

arxiv: 1501.04141 · arxiv_version: 1501.04141v2 · doi: 10.48550/arxiv.1501.04141 · pith_short_12: DJL4Q4LJ4DUV · pith_short_16: DJL4Q4LJ4DUVHVRP · pith_short_8: DJL4Q4LJ

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/DJL4Q4LJ4DUVHVRPOUBNJTASPI \
  | 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: 1a57c87169e0e953d62f7502d4cc127a3a72cbade38b31a4409fe7add02b277a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "84e54ba1b8aa964ac9552d594a7437b215295475d11c9f606333153b18d28310",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2015-01-17T01:40:40Z",
    "title_canon_sha256": "887e2a7cd43a2d4a2e8401cf144eeef5be10f8f8896731118124e4478d7e4fe0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1501.04141",
    "kind": "arxiv",
    "version": 2
  }
}