Pith Number

pith:4Y7R4BCH

pith:2019:4Y7R4BCHLTGU4VMXGEY4G33OET

not attested not anchored not stored refs pending

The K2-HERMES Survey: Age and Metallicity of the Thick Disc

Boquan Chen, Daniel B. Zucker, Daniel Huber, David M. Nataf, Dennis Stello, Duncan Wright, Gayandhi M. De Silva, Geraint F. Lewis, Gregor Traven, Hafiz Saddon, James Esdaile, Jane Lin, Janez Kos, Jeffrey D. Simpson, Joel C. Zinn, Jonathan Horner, Joss Bland-Hawthorn, Karin Lind, Ken Freeman, Klemen Cotar, Marc Hon, Martin Asplund, Michael R. Hayden, Prajwal R. Kafle, Rob A. Wittenmyer, Rosemary F. G. Wyse, Sanjib Sharma, Sarah Martell, Shourya Khanna, Sven Buder, Tanda Li, Thomas Kallinger, Thomas Nordlander, Timothy R. Bedding, Tomaz Zwitter, Valentina D'Orazi, Yuan-Sen Ting

arxiv:1904.12444 v1 · 2019-04-29 · astro-ph.GA · astro-ph.SR

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4Y7R4BCHLTGU4VMXGEY4G33OET}

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	2026-07-05T00:13:45.537442Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e63f1e04475ccd4e55973131c36f6e24ee4f9f205350c248982095cc5d684a08

Aliases

arxiv: 1904.12444 · arxiv_version: 1904.12444v1 · doi: 10.48550/arxiv.1904.12444 · pith_short_12: 4Y7R4BCHLTGU · pith_short_16: 4Y7R4BCHLTGU4VMX · pith_short_8: 4Y7R4BCH

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/4Y7R4BCHLTGU4VMXGEY4G33OET \
  | 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: e63f1e04475ccd4e55973131c36f6e24ee4f9f205350c248982095cc5d684a08

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c99d5ba5d5c241fd9317f2d83c0a77390a5ebcb320bee72a270a363e0f98a2c7",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2019-04-29T04:35:08Z",
    "title_canon_sha256": "727f18942bcb7f87f74d2f2aa61db95926cf401f29d26e916badc8d58ecf3270"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.12444",
    "kind": "arxiv",
    "version": 1
  }
}