Pith Number

pith:QZA7M4P6

pith:2009:QZA7M4P6L4P7HPUUV5DBXLQON7

not attested not anchored not stored refs pending

Observational signatures for depletion in the Spite plateau: solving the cosmological Li discrepancy?

I. Ramirez, J. Melendez, L. Casagrande, M. Asplund, W. J. Schuster

arxiv:0912.2949 v1 · 2009-12-15 · astro-ph.SR · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QZA7M4P6L4P7HPUUV5DBXLQON7}

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	2026-05-18T02:10:23.386895Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8641f671fe5f1ff3be94af461bae0e6ffee97f99ae76cd4232d39e3e326b6088

Aliases

arxiv: 0912.2949 · arxiv_version: 0912.2949v1 · doi: 10.48550/arxiv.0912.2949 · pith_short_12: QZA7M4P6L4P7 · pith_short_16: QZA7M4P6L4P7HPUU · pith_short_8: QZA7M4P6

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/QZA7M4P6L4P7HPUUV5DBXLQON7 \
  | 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: 8641f671fe5f1ff3be94af461bae0e6ffee97f99ae76cd4232d39e3e326b6088

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c521043e835f27644e94849f54df734952a8d814dcd9694ccf81d48912d43712",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2009-12-15T16:53:56Z",
    "title_canon_sha256": "350bab41058e0d8df77b244b0b6896e198dcffbc9ee0c0f5d54d6d829b49db3a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0912.2949",
    "kind": "arxiv",
    "version": 1
  }
}