Pith Number

pith:UP4WLQCS

pith:2015:UP4WLQCSTOFS2TBJ6Z2LWUUAZD

not attested not anchored not stored refs pending

On the Metallicity and Origin of the Smith High-Velocity Cloud

Alex S. Hill, Andrew J. Fox, Bart P. Wakker, David V. Stark, Fabian Heitsch, Felix J. Lockman, Kathleen A. Barger, Kenneth R. Sembach, Mubdi Rahman, Nicolas Lehner

arxiv:1512.04957 v1 · 2015-12-15 · 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{UP4WLQCSTOFS2TBJ6Z2LWUUAZD}

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	2026-05-18T01:23:02.228092Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a3f965c0529b8b2d4c29f674bb5280c8f7298e8f6039f00eb86d737388cdd0d8

Aliases

arxiv: 1512.04957 · arxiv_version: 1512.04957v1 · doi: 10.48550/arxiv.1512.04957 · pith_short_12: UP4WLQCSTOFS · pith_short_16: UP4WLQCSTOFS2TBJ · pith_short_8: UP4WLQCS

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/UP4WLQCSTOFS2TBJ6Z2LWUUAZD \
  | 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: a3f965c0529b8b2d4c29f674bb5280c8f7298e8f6039f00eb86d737388cdd0d8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4934253d2a2e4c426f6faf1ee30ad9c9a0a518aade45eb9c68c2f257915efaeb",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2015-12-15T21:01:12Z",
    "title_canon_sha256": "b865b16a88cccbcc698070149876ab33dca2bac829eb15f1f8f89ee879bc2c6b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1512.04957",
    "kind": "arxiv",
    "version": 1
  }
}