Pith Number

pith:6EVD6Y6Y

pith:2017:6EVD6Y6YHZMM5NQA6ASX6D5GKM

not attested not anchored not stored refs pending

The Shape of Bouncing Universes

Chandrima Ganguly, John D. Barrow

arxiv:1705.06647 v1 · 2017-05-18 · gr-qc · astro-ph.CO · hep-th · physics.pop-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{6EVD6Y6YHZMM5NQA6ASX6D5GKM}

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	2026-05-18T00:26:46.212550Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f12a3f63d83e58ceb600f0257f0fa65323da30d9d4910b43427a5f07544219d6

Aliases

arxiv: 1705.06647 · arxiv_version: 1705.06647v1 · doi: 10.48550/arxiv.1705.06647 · pith_short_12: 6EVD6Y6YHZMM · pith_short_16: 6EVD6Y6YHZMM5NQA · pith_short_8: 6EVD6Y6Y

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/6EVD6Y6YHZMM5NQA6ASX6D5GKM \
  | 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: f12a3f63d83e58ceb600f0257f0fa65323da30d9d4910b43427a5f07544219d6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fe32d8743bf987554561998b4d9439d29748aa07e8bf9ace5d83246fc840e692",
    "cross_cats_sorted": [
      "astro-ph.CO",
      "hep-th",
      "physics.pop-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2017-05-18T15:21:53Z",
    "title_canon_sha256": "19312e4cc9834d07b498cd4c586b8cb6ddfdf7f534bf3762295e79e2cd05567b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1705.06647",
    "kind": "arxiv",
    "version": 1
  }
}