Pith Number

pith:IZPTLUJJ

pith:2018:IZPTLUJJCWNXRIXZGD5JEPQ4PI

not attested not anchored not stored refs pending

Sparsely-Observed Pulsating Red Giants in the AAVSO Observing Program

John R. Percy

arxiv:1804.08578 v1 · 2018-04-23 · 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{IZPTLUJJCWNXRIXZGD5JEPQ4PI}

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	2026-05-18T00:17:47.824685Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

465f35d129159b78a2f930fa923e1c7a374332543b8bc8c8342380b377b69e52

Aliases

arxiv: 1804.08578 · arxiv_version: 1804.08578v1 · doi: 10.48550/arxiv.1804.08578 · pith_short_12: IZPTLUJJCWNX · pith_short_16: IZPTLUJJCWNXRIXZ · pith_short_8: IZPTLUJJ

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/IZPTLUJJCWNXRIXZGD5JEPQ4PI \
  | 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: 465f35d129159b78a2f930fa923e1c7a374332543b8bc8c8342380b377b69e52

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d4b59dd133358c9a452ba0ac64058f9039c2c00e553269f8364072c6d74e8241",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2018-04-23T17:17:33Z",
    "title_canon_sha256": "3b8e38016f3a1e59bcefa08e426675639da28b5603754052021ab08304cccca0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1804.08578",
    "kind": "arxiv",
    "version": 1
  }
}