Pith Number

pith:EOQ7DIOG

pith:2009:EOQ7DIOGGDGZKFOF3PBMRRN7CZ

not attested not anchored not stored refs pending

Evidence for mass ejection associated with long secondary periods in red giants

C. P. Nicholls, P. R. Wood

arxiv:0910.4418 v1 · 2009-10-23 · 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{EOQ7DIOGGDGZKFOF3PBMRRN7CZ}

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	2026-05-18T02:34:13.066223Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

23a1f1a1c630cd9515c5dbc2c8c5bf16615bd46a125b170600ac60eed712389b

Aliases

arxiv: 0910.4418 · arxiv_version: 0910.4418v1 · doi: 10.48550/arxiv.0910.4418 · pith_short_12: EOQ7DIOGGDGZ · pith_short_16: EOQ7DIOGGDGZKFOF · pith_short_8: EOQ7DIOG

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/EOQ7DIOGGDGZKFOF3PBMRRN7CZ \
  | 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: 23a1f1a1c630cd9515c5dbc2c8c5bf16615bd46a125b170600ac60eed712389b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2d4b1d865837b23b952896d320ce337b176cbb28c3c0627cedc5666391d632e1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2009-10-23T01:46:05Z",
    "title_canon_sha256": "4fd141d1fc8724fa93f6371ff7df0961c9a08df4f5b2a9c80465e3eed4ff939d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0910.4418",
    "kind": "arxiv",
    "version": 1
  }
}