Pith Number

pith:BA4KYCCU

pith:2000:BA4KYCCUVT2GLHDXMQDRS6PPMD

not attested not anchored not stored refs pending

Evolutionary Timescale of the DAV G117-B15A: The Most Stable Optical Clock Known

Anjum Mukadam, D. E. Winget, M. D. Reed, Paul A. Bradley, R. E. Nather, S. D. Kawaler, S. O.Kepler, T. S. Metcalfe

arxiv:astro-ph/0003478 v1 · 2000-03-31 · astro-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{BA4KYCCUVT2GLHDXMQDRS6PPMD}

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	2026-07-04T16:16:14.887165Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0838ac0854acf4659c7764071979ef60f501cf25ef3437a7f6459b6ce24e478b

Aliases

arxiv: astro-ph/0003478 · arxiv_version: astro-ph/0003478v1 · doi: 10.48550/arxiv.astro-ph/0003478 · pith_short_12: BA4KYCCUVT2G · pith_short_16: BA4KYCCUVT2GLHDX · pith_short_8: BA4KYCCU

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/BA4KYCCUVT2GLHDXMQDRS6PPMD \
  | 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: 0838ac0854acf4659c7764071979ef60f501cf25ef3437a7f6459b6ce24e478b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a9f94e06dd54fce3a39144134394f0ed203aa6c2e44513b7f912b8d58be93c9e",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2000-03-31T16:40:29Z",
    "title_canon_sha256": "cfc13da718fbe74d39f60006cb77504cdedc9e25710f3945c056409792f6748f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0003478",
    "kind": "arxiv",
    "version": 1
  }
}