Pith Number

pith:ECQRFQMX

pith:2011:ECQRFQMXMPDFUGSJ32N77QLVXC

not attested not anchored not stored refs pending

One fewer solution to the cosmological lithium problem

Barry Davids, Oliver S. Kirsebom

arxiv:1109.4690 v2 · 2011-09-22 · astro-ph.CO · nucl-th

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ECQRFQMXMPDFUGSJ32N77QLVXC}

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	2026-05-18T02:00:26.826579Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

20a112c19763c65a1a49de9bffc175b8a1859fc1beb841683c00696638695f75

Aliases

arxiv: 1109.4690 · arxiv_version: 1109.4690v2 · doi: 10.48550/arxiv.1109.4690 · pith_short_12: ECQRFQMXMPDF · pith_short_16: ECQRFQMXMPDFUGSJ · pith_short_8: ECQRFQMX

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/ECQRFQMXMPDFUGSJ32N77QLVXC \
  | 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: 20a112c19763c65a1a49de9bffc175b8a1859fc1beb841683c00696638695f75

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f8b5da998dce6c9138dc00c94e7305b28c6086efb98722c4d2d8f9f4924ce867",
    "cross_cats_sorted": [
      "nucl-th"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2011-09-22T02:26:30Z",
    "title_canon_sha256": "51edd1a390b1c3bbf72fa9fe3f9ca82c8596a0899e075e18c0fb478ea064bd00"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1109.4690",
    "kind": "arxiv",
    "version": 2
  }
}