Pith Number

pith:42P5UOJ5

pith:2017:42P5UOJ5TNP2RUE5WK74LD2LJA

not attested not anchored not stored refs pending

The average structural evolution of massive galaxies can be reliably estimated using cumulative galaxy number densities

Allison Hill, Bart Clauwens, Joop Schaye, Marijn Franx

arxiv:1703.02568 v2 · 2017-03-07 · 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{42P5UOJ5TNP2RUE5WK74LD2LJA}

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	2026-05-18T00:43:26.401237Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e69fda393d9b5fa8d09db2bfc58f4b481b4b55df177e6b7b3907130b93e6110c

Aliases

arxiv: 1703.02568 · arxiv_version: 1703.02568v2 · doi: 10.48550/arxiv.1703.02568 · pith_short_12: 42P5UOJ5TNP2 · pith_short_16: 42P5UOJ5TNP2RUE5 · pith_short_8: 42P5UOJ5

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/42P5UOJ5TNP2RUE5WK74LD2LJA \
  | 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: e69fda393d9b5fa8d09db2bfc58f4b481b4b55df177e6b7b3907130b93e6110c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0295c3475b9dee619ce90cf7b18a352db0349a3f9d49493f8a1dea68f9c6d9c1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2017-03-07T19:37:50Z",
    "title_canon_sha256": "ef5b88ea60d1bce677e1e736fcf38f1a203aadab8e012691dcd8e272de59f154"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1703.02568",
    "kind": "arxiv",
    "version": 2
  }
}