Pith Number

pith:QVF6ZTXY

pith:2001:QVF6ZTXYEGIHFIYNNTQYRLGEZT

not attested not anchored not stored refs pending

Distance measurements as a probe of cosmic acceleration

Neil Trentham (Institute of Astronomy, University of Cambridge)

arxiv:astro-ph/0105404 v1 · 2001-05-23 · 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{QVF6ZTXYEGIHFIYNNTQYRLGEZT}

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	2026-05-18T01:22:59.036652Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

854beccef8219072a30d6ce188acc4ccc1a2a9709747afae849c1c06c38d5714

Aliases

arxiv: astro-ph/0105404 · arxiv_version: astro-ph/0105404v1 · doi: 10.48550/arxiv.astro-ph/0105404 · pith_short_12: QVF6ZTXYEGIH · pith_short_16: QVF6ZTXYEGIHFIYN · pith_short_8: QVF6ZTXY

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/QVF6ZTXYEGIHFIYNNTQYRLGEZT \
  | 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: 854beccef8219072a30d6ce188acc4ccc1a2a9709747afae849c1c06c38d5714

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "55ee44992b8f2e99ef4eeadedaf2da17933dcb0c285353d66a2a003b8ddf8ae4",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2001-05-23T07:54:16Z",
    "title_canon_sha256": "c2c9d439ac82a1f8ea0103b468fc7dc9410f2e57cc9e9594fb5eaadb01f90356"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0105404",
    "kind": "arxiv",
    "version": 1
  }
}