Pith Number

pith:2K2HZIGQ

pith:2011:2K2HZIGQCO5QMKGWBRWMTLVCXW

not attested not anchored not stored refs pending

The current star formation rate of K+A galaxies

Danielle Nielsen (Wisconsin), Hawaii), Roberto De Propris (CTIO), Susan E. Ridgway (CTIO), Tomotsugu Goto (ifa

arxiv:1106.0757 v2 · 2011-06-03 · 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{2K2HZIGQCO5QMKGWBRWMTLVCXW}

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	2026-05-18T02:01:42.180001Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d2b47ca0d013bb0628d60c6cc9aea2bd9452178fb14760f75900ab0e4839de76

Aliases

arxiv: 1106.0757 · arxiv_version: 1106.0757v2 · doi: 10.48550/arxiv.1106.0757 · pith_short_12: 2K2HZIGQCO5Q · pith_short_16: 2K2HZIGQCO5QMKGW · pith_short_8: 2K2HZIGQ

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/2K2HZIGQCO5QMKGWBRWMTLVCXW \
  | 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: d2b47ca0d013bb0628d60c6cc9aea2bd9452178fb14760f75900ab0e4839de76

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "277b188e9c084be76c6eb49a1c010cf6e5404d484a94152d7be1dd8c67a83533",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2011-06-03T20:14:52Z",
    "title_canon_sha256": "920ae7297394bc8176a846881266efe542d57b4abcac6bc4b751175a0602709f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1106.0757",
    "kind": "arxiv",
    "version": 2
  }
}