Pith Number

pith:F22SHHWA

pith:2011:F22SHHWAEJTGLDLZZG7EGIOWM5

not attested not anchored not stored refs pending

Evidence for dark matter contraction and a Salpeter IMF in a massive early-type galaxy

Adam S. Bolton, Alessandro Sonnenfeld, Leon V. E. Koopmans, Matthew W. Auger, Philip J. Marshall, Raphael Gavazzi, Sherry H. Suyu, Tommaso Treu

arxiv:1111.4215 v3 · 2011-11-17 · 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{F22SHHWAEJTGLDLZZG7EGIOWM5}

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	2026-05-18T01:59:31.444819Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2eb5239ec02266658d79c9be4321d6676f66d1939d1b42039be0d666ea240fdc

Aliases

arxiv: 1111.4215 · arxiv_version: 1111.4215v3 · doi: 10.48550/arxiv.1111.4215 · pith_short_12: F22SHHWAEJTG · pith_short_16: F22SHHWAEJTGLDLZ · pith_short_8: F22SHHWA

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/F22SHHWAEJTGLDLZZG7EGIOWM5 \
  | 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: 2eb5239ec02266658d79c9be4321d6676f66d1939d1b42039be0d666ea240fdc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f4f11c5a80025d7cfb158563100390984ac8ba9e8e6ebe16b736cee21357ebd3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2011-11-17T21:01:45Z",
    "title_canon_sha256": "d3215d222a6dd0f09e253c3028bd720f53942c22e927b653745b2a67b505acc5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1111.4215",
    "kind": "arxiv",
    "version": 3
  }
}