Pith Number

pith:JGPCUEAH

pith:2012:JGPCUEAHHHFGT2DOU65PTGQSY7

not attested not anchored not stored refs pending

Future constraints on variations of the fine structure constant from combined CMB and weak lensing measurements

Alessandro Melchiorri, Eloisa Menegoni, Matteo Martinelli

arxiv:1202.4373 v3 · 2012-02-20 · 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{JGPCUEAHHHFGT2DOU65PTGQSY7}

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	2026-05-18T01:58:23.477027Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

499e2a100739ca69e86ea7baf99a12c7df143ca04f96526040128761370c1a5c

Aliases

arxiv: 1202.4373 · arxiv_version: 1202.4373v3 · doi: 10.48550/arxiv.1202.4373 · pith_short_12: JGPCUEAHHHFG · pith_short_16: JGPCUEAHHHFGT2DO · pith_short_8: JGPCUEAH

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/JGPCUEAHHHFGT2DOU65PTGQSY7 \
  | 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: 499e2a100739ca69e86ea7baf99a12c7df143ca04f96526040128761370c1a5c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a7a837ec4a4507dd9ebacb214cd812e201d41485653b3e53bf7808a32c873d9a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2012-02-20T16:44:31Z",
    "title_canon_sha256": "b7ffd4a083684713fedd1dec081a5ef8407bb54fe3534ae9ffd66c5f2c54e14c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1202.4373",
    "kind": "arxiv",
    "version": 3
  }
}