Pith Number

pith:ZGYQTMFC

pith:2019:ZGYQTMFC7GP6SSLIHNIH62ZILB

not attested not anchored not stored refs pending

Ruling out $\sim 100-300$ GeV thermal relic annihilating dark matter by radio observation of the Andromeda galaxy

Chun Sing Leung, Jun Liu, Lang Cui, Man Ho Chan

arxiv:1901.04638 v1 · 2019-01-15 · astro-ph.GA · 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{ZGYQTMFC7GP6SSLIHNIH62ZILB}

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	2026-05-17T23:48:50.233665Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c9b109b0a2f99fe949683b507f6b285871a75acbcd92cea8830f1ee43d815317

Aliases

arxiv: 1901.04638 · arxiv_version: 1901.04638v1 · doi: 10.48550/arxiv.1901.04638 · pith_short_12: ZGYQTMFC7GP6 · pith_short_16: ZGYQTMFC7GP6SSLI · pith_short_8: ZGYQTMFC

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/ZGYQTMFC7GP6SSLIHNIH62ZILB \
  | 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: c9b109b0a2f99fe949683b507f6b285871a75acbcd92cea8830f1ee43d815317

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "86bb55c3a527fa5772fb3f2981f5525ebff6bba8008bea9045c747a98245b59f",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2019-01-15T02:18:22Z",
    "title_canon_sha256": "1fa71b64f19b7eb25d12a3bc43b30c646d83f5b22632ee684e911717e74024a9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1901.04638",
    "kind": "arxiv",
    "version": 1
  }
}