Pith Number

pith:4ILRUKT7

pith:2012:4ILRUKT7VI6V6ZSBXGYGV4UBYM

not attested not anchored not stored refs pending

The R{\o}mer Delay and Mass Ratio of the sdB+dM Binary 2M 1938+4603 from Kepler Eclipse Timings

Brad N. Barlow, Richard A. Wade, Sandra E. Liss

arxiv:1204.3321 v2 · 2012-04-15 · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4ILRUKT7VI6V6ZSBXGYGV4UBYM}

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	2026-05-18T01:57:52.359014Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e2171a2a7faa3d5f6641b9b06af281c319e17a6304469ee05764c7a67f1439f0

Aliases

arxiv: 1204.3321 · arxiv_version: 1204.3321v2 · doi: 10.48550/arxiv.1204.3321 · pith_short_12: 4ILRUKT7VI6V · pith_short_16: 4ILRUKT7VI6V6ZSB · pith_short_8: 4ILRUKT7

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/4ILRUKT7VI6V6ZSBXGYGV4UBYM \
  | 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: e2171a2a7faa3d5f6641b9b06af281c319e17a6304469ee05764c7a67f1439f0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3be0fae09e2eebf9ff19d5c11a81b6583c1f80819051ad774fd5a5657b123c62",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2012-04-15T20:22:06Z",
    "title_canon_sha256": "7adf85009d211a0aea7da9ee064308779b27df28f4884ea80bec103eb75e93a7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1204.3321",
    "kind": "arxiv",
    "version": 2
  }
}