Pith Number

pith:FZXLXH7D

pith:2018:FZXLXH7DM75M2OPKPBRKT3DPUV

not attested not anchored not stored refs pending

J0023+0307: A mega metal-poor dwarf star from SDSS/BOSS

Carlos Allende Prieto, David S. Aguado, Jonay I. Gonz\'alez Hern\'andez, Rafael Rebolo

arxiv:1802.06240 v2 · 2018-02-17 · astro-ph.SR · 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{FZXLXH7DM75M2OPKPBRKT3DPUV}

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	2026-05-18T00:21:05.915447Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2e6ebb9fe367facd39ea7862a9ec6fa5532ac8d427385c4a341defc4ce5dbbe2

Aliases

arxiv: 1802.06240 · arxiv_version: 1802.06240v2 · doi: 10.48550/arxiv.1802.06240 · pith_short_12: FZXLXH7DM75M · pith_short_16: FZXLXH7DM75M2OPK · pith_short_8: FZXLXH7D

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/FZXLXH7DM75M2OPKPBRKT3DPUV \
  | 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: 2e6ebb9fe367facd39ea7862a9ec6fa5532ac8d427385c4a341defc4ce5dbbe2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "56f6752e8d241c666c92ddbb403df994a1ec2f41e57f4156082e0e527b324dac",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2018-02-17T14:11:54Z",
    "title_canon_sha256": "e6436e28f5a79f08b29d2215ed1c3315598c07440b93e311f4f909b1b273dd55"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1802.06240",
    "kind": "arxiv",
    "version": 2
  }
}