Pith Number

pith:M5MUR3RZ

pith:2016:M5MUR3RZDNWPBLKLEQVYIJFCKP

not attested not anchored not stored refs pending

Resolved Companions of Cepheids: Testing the Candidates with X-Ray Observations

Brian D. Mason, Edward Guinan, Evan Tingle, Gail H. Schaefer, Howard E. Bond, Ignazio Pillitteri, Margarita Karovska, Nancy Remage Evans, Scott Engle, Scott Wolk

arxiv:1602.01797 v1 · 2016-02-04 · 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{M5MUR3RZDNWPBLKLEQVYIJFCKP}

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	2026-05-18T01:16:42.669519Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

675948ee391b6cf0ad4b242b8424a253ca763e9a009a4a80fedd94bdfd29d99b

Aliases

arxiv: 1602.01797 · arxiv_version: 1602.01797v1 · doi: 10.48550/arxiv.1602.01797 · pith_short_12: M5MUR3RZDNWP · pith_short_16: M5MUR3RZDNWPBLKL · pith_short_8: M5MUR3RZ

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/M5MUR3RZDNWPBLKLEQVYIJFCKP \
  | 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: 675948ee391b6cf0ad4b242b8424a253ca763e9a009a4a80fedd94bdfd29d99b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "735edf04da05eed9cc040ba7488a6ebd7f12883866650b621c3cd75a450cf896",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2016-02-04T19:17:57Z",
    "title_canon_sha256": "74dc4f895e83e888978d26c7ed9414c9dd122128ae67e625ec7ee31859b89861"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1602.01797",
    "kind": "arxiv",
    "version": 1
  }
}