Pith Number

pith:EB2RMK4G

pith:2019:EB2RMK4GZFLH7GHH2NT4T7IRCP

not attested not anchored not stored refs pending

Fine-structure constant constraints on late-time dark energy transitions

C. J. A. P. Martins, M. Prat Colomer

arxiv:1903.04310 v1 · 2019-03-08 · astro-ph.CO · gr-qc · hep-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{EB2RMK4GZFLH7GHH2NT4T7IRCP}

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	2026-05-17T23:51:35.831046Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2075162b86c9567f98e7d367c9fd1113fd32494fb39a102c2cda1c9df8c6eefb

Aliases

arxiv: 1903.04310 · arxiv_version: 1903.04310v1 · doi: 10.48550/arxiv.1903.04310 · pith_short_12: EB2RMK4GZFLH · pith_short_16: EB2RMK4GZFLH7GHH · pith_short_8: EB2RMK4G

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/EB2RMK4GZFLH7GHH2NT4T7IRCP \
  | 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: 2075162b86c9567f98e7d367c9fd1113fd32494fb39a102c2cda1c9df8c6eefb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d8a2cad505ed15780c910d838d2aad41d2b21e6804148bf3c9b2c252d52bd9e8",
    "cross_cats_sorted": [
      "gr-qc",
      "hep-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2019-03-08T16:45:40Z",
    "title_canon_sha256": "5dc52cecb6876fafb3fc79abb88546cf03d063ca794253464e017910a6f63213"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1903.04310",
    "kind": "arxiv",
    "version": 1
  }
}