Pith Number

pith:VBR5Y7P3

pith:2020:VBR5Y7P36IORWV32JLGBSD5VMX

not attested not anchored not stored refs pending

Edges and Endpoints in 21-cm Observations from Resonant Photon Production

Alfredo Urbano, Andrea Caputo, Hongwan Liu, Joshua T. Ruderman, Maxim Pospelov, Siddharth Mishra-Sharma

arxiv:2009.03899 v1 · 2020-09-08 · astro-ph.CO · hep-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{VBR5Y7P36IORWV32JLGBSD5VMX}

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	2026-07-05T02:55:32.257281Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a863dc7dfbf21d1b577a4acc190fb565cc9c776b1724cb33f66244b6fa56d501

Aliases

arxiv: 2009.03899 · arxiv_version: 2009.03899v1 · doi: 10.48550/arxiv.2009.03899 · pith_short_12: VBR5Y7P36IOR · pith_short_16: VBR5Y7P36IORWV32 · pith_short_8: VBR5Y7P3

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/VBR5Y7P36IORWV32JLGBSD5VMX \
  | 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: a863dc7dfbf21d1b577a4acc190fb565cc9c776b1724cb33f66244b6fa56d501

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "14318279f1d72f80b4c13461554753872370a7eee9d932431594170f57eeafff",
    "cross_cats_sorted": [
      "hep-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2020-09-08T18:00:00Z",
    "title_canon_sha256": "a95f67c47e3f355d14113c7eb5738b4f6eecebd9395581a175714d25b4408adb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2009.03899",
    "kind": "arxiv",
    "version": 1
  }
}