Pith Number

pith:A7MYE5N6

pith:2012:A7MYE5N6UUELNFMYQMTXZNLWVU

not attested not anchored not stored refs pending

On the Origin of the Balmer and Lyman Emission Lines

E. Wiehr, G. Stellmacher

arxiv:1209.6264 v2 · 2012-09-27 · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{A7MYE5N6UUELNFMYQMTXZNLWVU}

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	2026-05-18T03:44:14.973909Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

07d98275bea508b6959883277cb576ad0d674865c17853c03c4806c5df7c9410

Aliases

arxiv: 1209.6264 · arxiv_version: 1209.6264v2 · doi: 10.48550/arxiv.1209.6264 · pith_short_12: A7MYE5N6UUEL · pith_short_16: A7MYE5N6UUELNFMY · pith_short_8: A7MYE5N6

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/A7MYE5N6UUELNFMYQMTXZNLWVU \
  | 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: 07d98275bea508b6959883277cb576ad0d674865c17853c03c4806c5df7c9410

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8fc3de38382e55b94459918d3139b75249fd08e6af595a30e108c22ef0d27534",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2012-09-27T16:07:11Z",
    "title_canon_sha256": "9d670e1e351a1d61505e4873f5caabab35fc6006b6069e0b75d2b91a5bea83d4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1209.6264",
    "kind": "arxiv",
    "version": 2
  }
}