Pith Number

pith:DVSKMAIY

pith:2015:DVSKMAIY27LJ3VEMTQCB6KLVB2

not attested not anchored not stored refs pending

The Local Group as a time machine: studying the high-redshift Universe with nearby galaxies

Alex Fitts, Benjamin D. Johnson, Charlie Conroy, Daniel R. Weisz, James S. Bullock, Michael Boylan-Kolchin

arxiv:1504.06621 v2 · 2015-04-24 · astro-ph.CO · 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{DVSKMAIY27LJ3VEMTQCB6KLVB2}

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	2026-05-18T01:34:41.867813Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1d64a60118d7d69dd48c9c041f29750eb0d8913c82f4ffb119ca7ffaf27583a0

Aliases

arxiv: 1504.06621 · arxiv_version: 1504.06621v2 · doi: 10.48550/arxiv.1504.06621 · pith_short_12: DVSKMAIY27LJ · pith_short_16: DVSKMAIY27LJ3VEM · pith_short_8: DVSKMAIY

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/DVSKMAIY27LJ3VEMTQCB6KLVB2 \
  | 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: 1d64a60118d7d69dd48c9c041f29750eb0d8913c82f4ffb119ca7ffaf27583a0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5c8dc1cc01613d0cb6eee69737ce5402265ab331acedad939b063daa65fe1702",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2015-04-24T20:00:33Z",
    "title_canon_sha256": "97cb3aa8312d6d18c46b7748d32fc78f2734d0d5106de9f3325ad16cb9ce67fe"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1504.06621",
    "kind": "arxiv",
    "version": 2
  }
}