Pith Number

pith:H5IOLRBD

pith:2018:H5IOLRBD2REEFRPM3JGLRA5XRN

not attested not anchored not stored refs pending

Homing in on Polaris: A 7 M$_\odot$ first-overtone Cepheid entering the instability strip for the first time

Richard I. Anderson

arxiv:1803.07413 v1 · 2018-03-20 · 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{H5IOLRBD2REEFRPM3JGLRA5XRN}

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	2026-05-18T00:18:51.407020Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3f50e5c423d44842c5ecda4cb883b78b500cfdbb8d01d356d7223ed705fee1d8

Aliases

arxiv: 1803.07413 · arxiv_version: 1803.07413v1 · doi: 10.48550/arxiv.1803.07413 · pith_short_12: H5IOLRBD2REE · pith_short_16: H5IOLRBD2REEFRPM · pith_short_8: H5IOLRBD

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/H5IOLRBD2REEFRPM3JGLRA5XRN \
  | 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: 3f50e5c423d44842c5ecda4cb883b78b500cfdbb8d01d356d7223ed705fee1d8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1ef18cabfc7bbcc501d7d87ba31d09606227ec78028351db97fd2b724e0fb70c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2018-03-20T13:25:27Z",
    "title_canon_sha256": "ed6c429e41d31e337e3104155c989efd2333d2f174a7ce92fc1ba8a94bb40339"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1803.07413",
    "kind": "arxiv",
    "version": 1
  }
}