Pith Number

pith:PHORNRME

pith:2009:PHORNRMEAR2SC66WYTUFVHBZYH

not attested not anchored not stored refs pending

The accretion of galaxies into groups and clusters

(2) Durham University, (3) University of Cambridge), Andreea S. Font (2), Ian G. McCarthy (3) ((1)University of Waterloo, Michael L. Balogh (1), Richard G. Bower (2), Sean L. McGee (1)

arxiv:0908.0750 v1 · 2009-08-05 · 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{PHORNRMEAR2SC66WYTUFVHBZYH}

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	2026-05-18T02:12:44.178413Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

79dd16c5840475217bd6c4e85a9c39c1eb6d00a80324f06841e47463aa78193b

Aliases

arxiv: 0908.0750 · arxiv_version: 0908.0750v1 · doi: 10.48550/arxiv.0908.0750 · pith_short_12: PHORNRMEAR2S · pith_short_16: PHORNRMEAR2SC66W · pith_short_8: PHORNRME

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/PHORNRMEAR2SC66WYTUFVHBZYH \
  | 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: 79dd16c5840475217bd6c4e85a9c39c1eb6d00a80324f06841e47463aa78193b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "62877fc716ccc6c91541df5127bfd1ddf23e835ab393bcc64120c6b54ba82ee7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-08-05T20:23:26Z",
    "title_canon_sha256": "7c97c6542f22ceaba11e7895995180394acfb388a1c1d8c4bf8889bc78e29688"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0908.0750",
    "kind": "arxiv",
    "version": 1
  }
}