Pith Number

pith:4SMCNY5N

pith:2009:4SMCNY5NES6VAVYDW3HIAQAEAA

not attested not anchored not stored refs pending

The age dependence of the size-stellar mass relation and some implications

2-UPENN), Francesco Shankar (1), Mariangela Bernardi (2) (1-MPA

arxiv:0903.3964 v1 · 2009-03-23 · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4SMCNY5NES6VAVYDW3HIAQAEAA}

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	2026-05-18T02:14:26.389581Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e49826e3ad24bd505703b6ce804004003161bcc1313ad36cf3275e34a78c1cf5

Aliases

arxiv: 0903.3964 · arxiv_version: 0903.3964v1 · doi: 10.48550/arxiv.0903.3964 · pith_short_12: 4SMCNY5NES6V · pith_short_16: 4SMCNY5NES6VAVYD · pith_short_8: 4SMCNY5N

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/4SMCNY5NES6VAVYDW3HIAQAEAA \
  | 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: e49826e3ad24bd505703b6ce804004003161bcc1313ad36cf3275e34a78c1cf5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "82c48e6751952a29f6b16fb355c4b5baf3963d38d5f1f724396adf8869486c13",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-03-23T21:26:34Z",
    "title_canon_sha256": "0bed9abcc8ea088bf6324b496edf180ea2109096abfa85b3c65436817fe6e6ce"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0903.3964",
    "kind": "arxiv",
    "version": 1
  }
}