Pith Number

pith:UGD5HDWP

pith:2015:UGD5HDWPB6ZT5GQITXYYHTC75S

not attested not anchored not stored refs pending

Clues to the formation of the Milky Way's thick disk

M. Haywood, M. Lehnert, O. Snaith, P. Di Matteo

arxiv:1504.02019 v2 · 2015-04-08 · 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{UGD5HDWPB6ZT5GQITXYYHTC75S}

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	2026-05-18T02:19:07.607218Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a187d38ecf0fb33e9a089df183cc5fec9dcb5789e38b8c9bae14a551f052d6c7

Aliases

arxiv: 1504.02019 · arxiv_version: 1504.02019v2 · doi: 10.48550/arxiv.1504.02019 · pith_short_12: UGD5HDWPB6ZT · pith_short_16: UGD5HDWPB6ZT5GQI · pith_short_8: UGD5HDWP

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/UGD5HDWPB6ZT5GQITXYYHTC75S \
  | 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: a187d38ecf0fb33e9a089df183cc5fec9dcb5789e38b8c9bae14a551f052d6c7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "753e448dd3d208d01f882d7551fc4e9ab3419d92a97116589d320cb9921a1de3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2015-04-08T16:09:44Z",
    "title_canon_sha256": "f68f9f6de6b713b882d3e923f29110e5b8d9e736d569b18d642ba2af2d08eeec"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1504.02019",
    "kind": "arxiv",
    "version": 2
  }
}