Pith Number

pith:I7LAPHGM

pith:2015:I7LAPHGMBBTKGMY4RM2ARXJHAH

not attested not anchored not stored refs pending

Local associations and the barium puzzle

Arumalla B. S. Reddy (1), David L. Lambert (1) ((1) W.J. McDonald Observatory, Department of Astronomy, The University of Texas at Austin)

arxiv:1508.02815 v1 · 2015-08-12 · 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{I7LAPHGMBBTKGMY4RM2ARXJHAH}

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	2026-05-18T01:29:45.056503Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

47d6079ccc0866a3331c8b3408dd2701f6b42697bbbefc70cd064970790b8671

Aliases

arxiv: 1508.02815 · arxiv_version: 1508.02815v1 · doi: 10.48550/arxiv.1508.02815 · pith_short_12: I7LAPHGMBBTK · pith_short_16: I7LAPHGMBBTKGMY4 · pith_short_8: I7LAPHGM

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/I7LAPHGMBBTKGMY4RM2ARXJHAH \
  | 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: 47d6079ccc0866a3331c8b3408dd2701f6b42697bbbefc70cd064970790b8671

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e588dac68a09cdd19739e91bae5512225b5afd91262eac79e9c40be12c77b1f9",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2015-08-12T05:10:05Z",
    "title_canon_sha256": "d5b1dfab1bc7065fdad3d090414965c7e38c2323dc94f33945c3b7e4e23ce8e0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1508.02815",
    "kind": "arxiv",
    "version": 1
  }
}