Pith Number

pith:U6NDMB6L

pith:2018:U6NDMB6LPLNLQ4VKO5ZTIEZWP7

not attested not anchored not stored refs pending

The observable 21cm signal from reionization may be perturbative

Anson D'Aloisio, Matthew McQuinn

arxiv:1806.08372 v3 · 2018-06-21 · astro-ph.CO · astro-ph.GA

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{U6NDMB6LPLNLQ4VKO5ZTIEZWP7}

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	2026-05-18T00:00:30.139849Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a79a3607cb7adab872aa77733413367fc5ca891ad94559d9e4f1fe5effdab625

Aliases

arxiv: 1806.08372 · arxiv_version: 1806.08372v3 · doi: 10.48550/arxiv.1806.08372 · pith_short_12: U6NDMB6LPLNL · pith_short_16: U6NDMB6LPLNLQ4VK · pith_short_8: U6NDMB6L

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/U6NDMB6LPLNLQ4VKO5ZTIEZWP7 \
  | 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: a79a3607cb7adab872aa77733413367fc5ca891ad94559d9e4f1fe5effdab625

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "494e161b2a3474d4c561a51bf91f5810989bd425e442455f4ae861f53fd4c68b",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2018-06-21T18:05:28Z",
    "title_canon_sha256": "c5bbf12e422b81e1d29167fba5e9ead0f780a50ead80cebd01976aae06e1e207"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1806.08372",
    "kind": "arxiv",
    "version": 3
  }
}