Pith Number

pith:ZSIPGA6O

pith:2016:ZSIPGA6OFT6LZ2PRYVBO7WFKWZ

not attested not anchored not stored refs pending

Massive relic galaxies prefer dense environments

Ignacio Trujillo, Luis Peralta de Arriba, Marc Balcells, Mar\'ia Cebri\'an, Vicent Quilis

arxiv:1605.06503 v2 · 2016-05-20 · astro-ph.GA · 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{ZSIPGA6OFT6LZ2PRYVBO7WFKWZ}

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	2026-05-18T00:55:13.728441Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cc90f303ce2cfcbce9f1c542efd8aab6726754b8a8bd9427ba6fdae0c317f8d8

Aliases

arxiv: 1605.06503 · arxiv_version: 1605.06503v2 · doi: 10.48550/arxiv.1605.06503 · pith_short_12: ZSIPGA6OFT6L · pith_short_16: ZSIPGA6OFT6LZ2PR · pith_short_8: ZSIPGA6O

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/ZSIPGA6OFT6LZ2PRYVBO7WFKWZ \
  | 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: cc90f303ce2cfcbce9f1c542efd8aab6726754b8a8bd9427ba6fdae0c317f8d8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "78f8083cff378cde3cd753b7ed869488993ea30e20ac643321546e71881a3e5b",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2016-05-20T20:00:03Z",
    "title_canon_sha256": "76e6e5d817222891dc7b9fccd955c17c0a9a7a3ee8c33a3e9c96f68f2124272d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1605.06503",
    "kind": "arxiv",
    "version": 2
  }
}