Pith Number

pith:MWAPDKPI

pith:2007:MWAPDKPIO7TLKIAHOOCRY26FJI

not attested not anchored not stored refs pending

Variation of the Fine-Structure Constant from the de Sitter Invariant Special Relativity

Mu-Lin Yan, Neng-Chao Xiao, Shao-Xia Chen

arxiv:astro-ph/0703110 v1 · 2007-03-06 · astro-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{MWAPDKPIO7TLKIAHOOCRY26FJI}

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	2026-05-18T01:40:26.896780Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6580f1a9e877e6b5200773851c6bc54a2932deae906f0270ea5c2cce668b7713

Aliases

arxiv: astro-ph/0703110 · arxiv_version: astro-ph/0703110v1 · doi: 10.48550/arxiv.astro-ph/0703110 · pith_short_12: MWAPDKPIO7TL · pith_short_16: MWAPDKPIO7TLKIAH · pith_short_8: MWAPDKPI

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/MWAPDKPIO7TLKIAHOOCRY26FJI \
  | 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: 6580f1a9e877e6b5200773851c6bc54a2932deae906f0270ea5c2cce668b7713

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "db3adca055834eb8c50c248f3e7ac5f2d74fee90e705a6b3e56da6f7f1164a7d",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2007-03-06T09:50:35Z",
    "title_canon_sha256": "23f0b57a52fe0777a0809457c43256504176a99aa2bc0699d7a608ff701302e6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0703110",
    "kind": "arxiv",
    "version": 1
  }
}