Pith Number

pith:BHBBVQ2I

pith:2023:BHBBVQ2IV74332JK5SFUYZP6KG

not attested not anchored not stored refs pending

Fine structure constant measurements in quasar absorption systems

Dinko Milakovi\'c

arxiv:2310.01071 v1 · 2023-10-02 · astro-ph.CO · astro-ph.IM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{BHBBVQ2IV74332JK5SFUYZP6KG}

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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.

Cited by

1 paper in Pith

The fine structure constant: a review of measurement results and possible space-time variations

Receipt and verification

First computed	2026-07-05T06:56:14.036399Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

09c21ac348aff9bde92aec8b4c65fe51a4ff37d845da439d581e1b29e95b7d06

Aliases

arxiv: 2310.01071 · arxiv_version: 2310.01071v1 · doi: 10.48550/arxiv.2310.01071 · pith_short_12: BHBBVQ2IV743 · pith_short_16: BHBBVQ2IV74332JK · pith_short_8: BHBBVQ2I

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/BHBBVQ2IV74332JK5SFUYZP6KG \
  | 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: 09c21ac348aff9bde92aec8b4c65fe51a4ff37d845da439d581e1b29e95b7d06

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d897eaa6bf032774d1ca2778f1e044f2e552ab8dc17f19aa0eecef8760c2c30c",
    "cross_cats_sorted": [
      "astro-ph.IM"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-sa/4.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2023-10-02T10:30:16Z",
    "title_canon_sha256": "916b6bb97815ef89ceeb0fd655e044b5567b573fcb079534ac11107c6ed46d90"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2310.01071",
    "kind": "arxiv",
    "version": 1
  }
}