Pith Number

pith:LCXG5AZL

pith:2020:LCXG5AZLAPBCK3QYI5DX2SPVY6

not attested not anchored not stored refs pending

On The Red Supergiant Problem

C. S. Kochanek (1) ((1) Dept. of Astronomy, The Ohio State University)

arxiv:2001.07216 v1 · 2020-01-20 · astro-ph.SR · astro-ph.GA

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{LCXG5AZLAPBCK3QYI5DX2SPVY6}

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	2026-07-05T00:50:12.970197Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

58ae6e832b03c2256e1847477d49f5c7af3814cfd4d7ec58676047a5e6aca7d7

Aliases

arxiv: 2001.07216 · arxiv_version: 2001.07216v1 · doi: 10.48550/arxiv.2001.07216 · pith_short_12: LCXG5AZLAPBC · pith_short_16: LCXG5AZLAPBCK3QY · pith_short_8: LCXG5AZL

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/LCXG5AZLAPBCK3QYI5DX2SPVY6 \
  | 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: 58ae6e832b03c2256e1847477d49f5c7af3814cfd4d7ec58676047a5e6aca7d7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "321f25fb7ec8b38e27070e2728a90cdc2249a15af46f58bb72ed6876807bd401",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2020-01-20T19:00:02Z",
    "title_canon_sha256": "11aadc13150ab3ca39802421b63f772ed525eaee2c953479fb15f7134235e063"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2001.07216",
    "kind": "arxiv",
    "version": 1
  }
}