Pith Number

pith:J52C7N7D

pith:2008:J52C7N7DOCY6HBGP4O23MQIRF2

not attested not anchored not stored refs pending

Head-Tail Galaxies: Beacons of High-Density Regions in Clusters

Australia), Hobart, Jamie B. Stevens (1), Melanie Johnston-Hollitt (1), Minnie Y. Mao (1), Physics, Simon J. Wotherspoon (1) ((1) School of Mathematics, University of Tasmania

arxiv:0810.4739 v1 · 2008-10-27 · astro-ph

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{J52C7N7DOCY6HBGP4O23MQIRF2}

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	2026-07-04T17:13:20.622365Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4f742fb7e370b1e384cfe3b5b641112e9f81be1059768753a5f4c496cfc8ee05

Aliases

arxiv: 0810.4739 · arxiv_version: 0810.4739v1 · doi: 10.48550/arxiv.0810.4739 · pith_short_12: J52C7N7DOCY6 · pith_short_16: J52C7N7DOCY6HBGP · pith_short_8: J52C7N7D

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/J52C7N7DOCY6HBGP4O23MQIRF2 \
  | 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: 4f742fb7e370b1e384cfe3b5b641112e9f81be1059768753a5f4c496cfc8ee05

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "336cbe3f38237f588cab8085931351ed343538414ad451118ba864ce1693ed2b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph",
    "submitted_at": "2008-10-27T04:39:21Z",
    "title_canon_sha256": "1df43e6ff0c54c48dd9ae24275122daaddbca43d88214e399d873628e3076344"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0810.4739",
    "kind": "arxiv",
    "version": 1
  }
}