Pith Number

pith:4NS3Z52X

pith:2015:4NS3Z52XWXWSNM6WJR44KZ2WO3

not attested not anchored not stored refs pending

It's Always Darkest Before the Cosmic Dawn: Early Results from Novel Tools and Telescopes for 21 cm Cosmology

Joshua S. Dillon

arxiv:1506.03024 v1 · 2015-06-09 · 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{4NS3Z52XWXWSNM6WJR44KZ2WO3}

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	2026-05-18T01:55:40.214417Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e365bcf757b5ed26b3d64c79c5675676f6c82044ccc43fbedff13394d68bf5d2

Aliases

arxiv: 1506.03024 · arxiv_version: 1506.03024v1 · doi: 10.48550/arxiv.1506.03024 · pith_short_12: 4NS3Z52XWXWS · pith_short_16: 4NS3Z52XWXWSNM6W · pith_short_8: 4NS3Z52X

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/4NS3Z52XWXWSNM6WJR44KZ2WO3 \
  | 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: e365bcf757b5ed26b3d64c79c5675676f6c82044ccc43fbedff13394d68bf5d2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7946cae172c634c6a81552fe230cd7e78220816bdc4cd1b0ed7107e9bd1a2138",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2015-06-09T18:04:27Z",
    "title_canon_sha256": "cd820c42bdf934f0f1a459508abf6dcae06216f82ad5203495211f087c7f1749"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1506.03024",
    "kind": "arxiv",
    "version": 1
  }
}