Pith Number

pith:MCNKRY2Y

pith:2010:MCNKRY2YFEEO6DW37R7VLO3XJS

not attested not anchored not stored refs pending

Star Formation Signatures in Optically Quiescent Early-type Galaxies

R. Michael Rich, Samir Salim

arxiv:1004.2041 v1 · 2010-04-12 · 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{MCNKRY2YFEEO6DW37R7VLO3XJS}

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	2026-05-18T03:58:49.183500Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

609aa8e3582908ef0edbfc7f55bb774c9a131f58b526f4c6ec11d649e5a3bb06

Aliases

arxiv: 1004.2041 · arxiv_version: 1004.2041v1 · doi: 10.48550/arxiv.1004.2041 · pith_short_12: MCNKRY2YFEEO · pith_short_16: MCNKRY2YFEEO6DW3 · pith_short_8: MCNKRY2Y

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/MCNKRY2YFEEO6DW37R7VLO3XJS \
  | 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: 609aa8e3582908ef0edbfc7f55bb774c9a131f58b526f4c6ec11d649e5a3bb06

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7f8db81d38de0f89e008994c921d558c3ca9d136fca1ab60c82371ef573bc277",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2010-04-12T20:00:04Z",
    "title_canon_sha256": "8ca0fbeff161e733c6fd840ade306224319f3dd629ca5078ec4c202b9aedcf07"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1004.2041",
    "kind": "arxiv",
    "version": 1
  }
}