Pith Number

pith:ECTRLVGY

pith:2011:ECTRLVGYOXJRS7FWWNMQNUNXY7

not attested not anchored not stored refs pending

Red Dwarf Stars: Ages, Rotation, Magnetic Dynamo Activity and the Habitability of Hosted Planets

Edward F. Guinan, Scott G. Engle

arxiv:1111.2872 v2 · 2011-11-11 · astro-ph.SR · astro-ph.EP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ECTRLVGYOXJRS7FWWNMQNUNXY7}

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	2026-05-18T02:21:34.745670Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

20a715d4d875d3197cb6b35906d1b7c7d35b32e43617318313d117752d7eebc9

Aliases

arxiv: 1111.2872 · arxiv_version: 1111.2872v2 · doi: 10.48550/arxiv.1111.2872 · pith_short_12: ECTRLVGYOXJR · pith_short_16: ECTRLVGYOXJRS7FW · pith_short_8: ECTRLVGY

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/ECTRLVGYOXJRS7FWWNMQNUNXY7 \
  | 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: 20a715d4d875d3197cb6b35906d1b7c7d35b32e43617318313d117752d7eebc9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5379aefd9998de862a44e114397416507eae84bd1b0ad684639c1aaf8da6293e",
    "cross_cats_sorted": [
      "astro-ph.EP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2011-11-11T21:36:22Z",
    "title_canon_sha256": "205925f93c301673e4e22d7c2900e8de19408a5c3fc5b64bd073447def5148ce"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1111.2872",
    "kind": "arxiv",
    "version": 2
  }
}