Pith Number

pith:UA5SQRR3

pith:2013:UA5SQRR3EZTX7ABBNFMEH3AF3M

not attested not anchored not stored refs pending

Project RISARD

Krzysztof Gozdziewski, Krzysztof Katarzynski, Marcin P. Gawronski

arxiv:1309.4639 v1 · 2013-09-18 · astro-ph.SR

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{UA5SQRR3EZTX7ABBNFMEH3AF3M}

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	2026-05-18T03:12:58.747186Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a03b28463b26677f8021695843ec05db3a066c2801ae67cdda225bd1e5f725a0

Aliases

arxiv: 1309.4639 · arxiv_version: 1309.4639v1 · doi: 10.48550/arxiv.1309.4639 · pith_short_12: UA5SQRR3EZTX · pith_short_16: UA5SQRR3EZTX7ABB · pith_short_8: UA5SQRR3

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/UA5SQRR3EZTX7ABBNFMEH3AF3M \
  | 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: a03b28463b26677f8021695843ec05db3a066c2801ae67cdda225bd1e5f725a0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d661d7ef6353b631d91c64696006f8827e0532349e81720ac5c24dd8f38cf956",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2013-09-18T13:23:25Z",
    "title_canon_sha256": "9e49e37a99ead679363f140f52aac416783cf1ffe6ec8233d19af3573a88ebe2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1309.4639",
    "kind": "arxiv",
    "version": 1
  }
}