Pith Number

pith:D2XN4XEF

pith:2009:D2XN4XEF4JJM3JKXGS6ENLLHAQ

not attested not anchored not stored refs pending

Distance to U Pegasi by the DDE Algorithm

Dirk Terrell, R. E. Wilson, T. R. Vaccaro

arxiv:0908.2137 v1 · 2009-08-15 · 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{D2XN4XEF4JJM3JKXGS6ENLLHAQ}

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	2026-07-04T15:48:00.836401Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1eaede5c85e252cda55734bc46ad670401a22d4ad3634c2a683f2400704a8837

Aliases

arxiv: 0908.2137 · arxiv_version: 0908.2137v1 · doi: 10.48550/arxiv.0908.2137 · pith_short_12: D2XN4XEF4JJM · pith_short_16: D2XN4XEF4JJM3JKX · pith_short_8: D2XN4XEF

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/D2XN4XEF4JJM3JKXGS6ENLLHAQ \
  | 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: 1eaede5c85e252cda55734bc46ad670401a22d4ad3634c2a683f2400704a8837

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "859bed23b92536faff763e1876a64e58fc549abc9205601ceb052b5f52f821c5",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2009-08-15T18:43:21Z",
    "title_canon_sha256": "9cc27ce4956941f51e57fca3edbaaf3ef1d4fe17b68c2669eb433bc8503aba14"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0908.2137",
    "kind": "arxiv",
    "version": 1
  }
}