Pith Number

pith:DTPXFG7F

pith:2015:DTPXFG7FPBIMFMQRPFVN3CFESW

not attested not anchored not stored refs pending

Comparison of Hipparcos Trigonometric and Mount Wilson Spectroscopic Parallaxes for 90 Subgiants that Defined the Class in 1935

Allan Sandage, Rachael L. Beaton, Steven R. Majewski

arxiv:1511.05930 v1 · 2015-11-18 · astro-ph.GA · 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{DTPXFG7FPBIMFMQRPFVN3CFESW}

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	2026-05-18T01:14:02.362334Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1cdf729be57850c2b211796add88a495901f29a6c59efe9d9e52bfb00554a8df

Aliases

arxiv: 1511.05930 · arxiv_version: 1511.05930v1 · doi: 10.48550/arxiv.1511.05930 · pith_short_12: DTPXFG7FPBIM · pith_short_16: DTPXFG7FPBIMFMQR · pith_short_8: DTPXFG7F

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/DTPXFG7FPBIMFMQRPFVN3CFESW \
  | 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: 1cdf729be57850c2b211796add88a495901f29a6c59efe9d9e52bfb00554a8df

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b1560ebb49272a2b6d7190cb67ac7c5ecd2320b6488baea14f45e3f73af2a970",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2015-11-18T20:20:40Z",
    "title_canon_sha256": "1739b11c484fdd32487fa0b87b058a0c07397b3a215869f07304b7705650a774"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1511.05930",
    "kind": "arxiv",
    "version": 1
  }
}