Pith Number

pith:ZUSCI75Q

pith:2015:ZUSCI75QDC7ZZGY7JSGWVWCUCW

not attested not anchored not stored refs pending

Cold galaxies

David L. Clements (Imperial College London), Michael Rowan-Robinson (Imperial College London)

arxiv:1507.08778 v1 · 2015-07-31 · 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{ZUSCI75QDC7ZZGY7JSGWVWCUCW}

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	2026-05-18T01:14:45.164771Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cd24247fb018bf9c9b1f4c8d6ad85415a0ec4d7bbce8019f10b26df2c867c90d

Aliases

arxiv: 1507.08778 · arxiv_version: 1507.08778v1 · doi: 10.48550/arxiv.1507.08778 · pith_short_12: ZUSCI75QDC7Z · pith_short_16: ZUSCI75QDC7ZZGY7 · pith_short_8: ZUSCI75Q

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/ZUSCI75QDC7ZZGY7JSGWVWCUCW \
  | 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: cd24247fb018bf9c9b1f4c8d6ad85415a0ec4d7bbce8019f10b26df2c867c90d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "54294e13da81e5a88777ff8877534f1b64ef8ba5dcee2bb1724670a78dc85306",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2015-07-31T07:33:18Z",
    "title_canon_sha256": "2e1e74baae0ff6a9c2740cb41d4ba750f8af770285498c02cbae5e0497c23e96"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1507.08778",
    "kind": "arxiv",
    "version": 1
  }
}