Pith Number

pith:GHDQXFSR

pith:2011:GHDQXFSRUM6ADG7B3VBD5UQFIR

not attested not anchored not stored refs pending

Crazy heart: kinematics of the "star pile" in Abell 545

Aaron J. Romanowsky, Ed Lloyd-Davies, Michael J. West, Ricardo Salinas, Tom Richtler, Ylva Schuberth

arxiv:1102.0038 v1 · 2011-01-31 · 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{GHDQXFSRUM6ADG7B3VBD5UQFIR}

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	2026-05-18T02:03:19.803387Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

31c70b9651a33c019be1dd423ed205447fd18480c3a41484413b0ad453142587

Aliases

arxiv: 1102.0038 · arxiv_version: 1102.0038v1 · doi: 10.48550/arxiv.1102.0038 · pith_short_12: GHDQXFSRUM6A · pith_short_16: GHDQXFSRUM6ADG7B · pith_short_8: GHDQXFSR

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/GHDQXFSRUM6ADG7B3VBD5UQFIR \
  | 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: 31c70b9651a33c019be1dd423ed205447fd18480c3a41484413b0ad453142587

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2bda32702ad3c630bf72a62f4baf9fd1d3dc6b3dd0b1cbdd3ce7f3d67a7a4f80",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2011-01-31T23:31:45Z",
    "title_canon_sha256": "05259f7d83b98f381a99762f4671538f8e891167e79d3f90aba70bc6fc504be8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1102.0038",
    "kind": "arxiv",
    "version": 1
  }
}