Pith Number

pith:TDWNQKUH

pith:2018:TDWNQKUHPA4CATOCARBLIVQC4U

not attested not anchored not stored refs pending

Direct Detection of Ultralight Dark Matter via Astronomical Ephemeris

Hajime Fukuda, Shigeki Matsumoto, Tsutomu T. Yanagida

arxiv:1801.02807 v1 · 2018-01-09 · hep-ph · astro-ph.CO · astro-ph.EP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{TDWNQKUHPA4CATOCARBLIVQC4U}

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	2026-05-17T23:58:05.227707Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

98ecd82a877838204dc20442b45602e520ca2bca76833457eb7a0087f3b33925

Aliases

arxiv: 1801.02807 · arxiv_version: 1801.02807v1 · doi: 10.48550/arxiv.1801.02807 · pith_short_12: TDWNQKUHPA4C · pith_short_16: TDWNQKUHPA4CATOC · pith_short_8: TDWNQKUH

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/TDWNQKUHPA4CATOCARBLIVQC4U \
  | 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: 98ecd82a877838204dc20442b45602e520ca2bca76833457eb7a0087f3b33925

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d3128600216178ced15cfd46b3902cb14c276d144ce83bea423d933682e07d09",
    "cross_cats_sorted": [
      "astro-ph.CO",
      "astro-ph.EP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "hep-ph",
    "submitted_at": "2018-01-09T06:08:30Z",
    "title_canon_sha256": "5687d1d9bfd08dd219cc7d6b271a853882153876232875a422c770cdb7f9ebb3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1801.02807",
    "kind": "arxiv",
    "version": 1
  }
}