Pith Number

pith:USB7I3SR

pith:1999:USB7I3SRNJJWMFQ27OO2BXX333

not attested not anchored not stored refs pending

An Observational Test of Quantum Cosmology

Neil Turok, Steven Gratton, Thomas Hertog

arxiv:astro-ph/9907212 v2 · 1999-07-15 · 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{USB7I3SRNJJWMFQ27OO2BXX333}

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	2026-07-04T17:18:22.071137Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a483f46e516a5366161afb9da0defbdef252de45a78a1c54c9f4bfabca472136

Aliases

arxiv: astro-ph/9907212 · arxiv_version: astro-ph/9907212v2 · doi: 10.48550/arxiv.astro-ph/9907212 · pith_short_12: USB7I3SRNJJW · pith_short_16: USB7I3SRNJJWMFQ2 · pith_short_8: USB7I3SR

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/USB7I3SRNJJWMFQ27OO2BXX333 \
  | 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: a483f46e516a5366161afb9da0defbdef252de45a78a1c54c9f4bfabca472136

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7b731086ea0d15ce1555aec2bd794b268461a06bb4df588bd916b5d3a4683189",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1999-07-15T20:57:08Z",
    "title_canon_sha256": "c2708cf2d4c8cc6e555005303f0cfb77fde5616c71be69e4ecb3aa30adfca9e0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9907212",
    "kind": "arxiv",
    "version": 2
  }
}