Pith Number

pith:BCLMQAYA

pith:2012:BCLMQAYAZ3KTFFSVL4A55RK5VZ

not attested not anchored not stored refs pending

The faint young Sun problem

Georg Feulner

arxiv:1204.4449 v1 · 2012-04-19 · astro-ph.EP · physics.ao-ph · physics.geo-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{BCLMQAYAZ3KTFFSVL4A55RK5VZ}

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	2026-05-18T03:54:59.957726Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0896c80300ced53296555f01dec55dae7ca00d66797d14d3a356ef25b6e952c4

Aliases

arxiv: 1204.4449 · arxiv_version: 1204.4449v1 · doi: 10.48550/arxiv.1204.4449 · pith_short_12: BCLMQAYAZ3KT · pith_short_16: BCLMQAYAZ3KTFFSV · pith_short_8: BCLMQAYA

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/BCLMQAYAZ3KTFFSVL4A55RK5VZ \
  | 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: 0896c80300ced53296555f01dec55dae7ca00d66797d14d3a356ef25b6e952c4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "59d762ef1c422924c0ebb42af0709ad556701701e9daefb5ed77974c1756a50c",
    "cross_cats_sorted": [
      "physics.ao-ph",
      "physics.geo-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2012-04-19T20:00:01Z",
    "title_canon_sha256": "c91d53a380852dbad34a2dc1c6bf989d4812b93b10f1d932b515eb1857287fcb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1204.4449",
    "kind": "arxiv",
    "version": 1
  }
}