Pith Number

pith:RBBJQRUI

pith:2000:RBBJQRUI3DWXOMIZLXG37MTPNY

not attested not anchored not stored refs pending

Cosmology with Varying Constants

C. J. A. P. Martins (DAMTP, CMS, University of Cambridge)

arxiv:astro-ph/0008287 v1 · 2000-08-18 · 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{RBBJQRUI3DWXOMIZLXG37MTPNY}

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	2026-05-18T00:37:01.096608Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8842984688d8ed7731195dcdbfb26f6e2c0c14494e0f4cba4ad07b8b0ce2a0a4

Aliases

arxiv: astro-ph/0008287 · arxiv_version: astro-ph/0008287v1 · doi: 10.48550/arxiv.astro-ph/0008287 · pith_short_12: RBBJQRUI3DWX · pith_short_16: RBBJQRUI3DWXOMIZ · pith_short_8: RBBJQRUI

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/RBBJQRUI3DWXOMIZLXG37MTPNY \
  | 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: 8842984688d8ed7731195dcdbfb26f6e2c0c14494e0f4cba4ad07b8b0ce2a0a4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "83ecc1896408e71e4faad9ec636fb519bb46057e83ae819d4c77ebe33a9c49e2",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2000-08-18T09:16:19Z",
    "title_canon_sha256": "3b635ee2c056072ee87c541a5d6e42f95900b97d20c127455c59f424b4c8e771"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0008287",
    "kind": "arxiv",
    "version": 1
  }
}