Pith Number

pith:D7QZAL3B

pith:2011:D7QZAL3BNNDZUDYD3MEGNKVSYJ

not attested not anchored not stored refs pending

Evolutionary Constraints on the Planet-Hosting Subgiant Epsilon Reticulum from its White Dwarf Companion

J. B. Holberg, J. Farihi, M. A. Barstow, M. R. Burleigh, S. L. Casewell

arxiv:1104.0925 v3 · 2011-04-05 · astro-ph.SR · 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{D7QZAL3BNNDZUDYD3MEGNKVSYJ}

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	2026-05-18T03:54:16.757063Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1fe1902f616b479a0f03db0866aab2c27d6d59417e023abcfc32328d1a60175c

Aliases

arxiv: 1104.0925 · arxiv_version: 1104.0925v3 · doi: 10.48550/arxiv.1104.0925 · pith_short_12: D7QZAL3BNNDZ · pith_short_16: D7QZAL3BNNDZUDYD · pith_short_8: D7QZAL3B

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/D7QZAL3BNNDZUDYD3MEGNKVSYJ \
  | 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: 1fe1902f616b479a0f03db0866aab2c27d6d59417e023abcfc32328d1a60175c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f40d320f28bedb7d6fd8b225becc73765d35133eb7d54dd36b8a395a55736dee",
    "cross_cats_sorted": [
      "astro-ph.EP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2011-04-05T20:00:00Z",
    "title_canon_sha256": "6a68f84cc5d1b3d59f98a9e86130c76a59ff720a64094d99a3c426fe4e743e4a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1104.0925",
    "kind": "arxiv",
    "version": 3
  }
}