Pith Number

pith:SAQ4CVLZ

pith:2013:SAQ4CVLZGIYCECVCQRRDB5XQGT

not attested not anchored not stored refs pending

Right about time?

Flavio Mercati, Sean Gryb

arxiv:1301.1538 v2 · 2013-01-08 · gr-qc · quant-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{SAQ4CVLZGIYCECVCQRRDB5XQGT}

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	2026-05-18T02:27:57.388138Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9021c155793230220aa2846230f6f034d49a9e1a4bf94d1e92a54302a740e83a

Aliases

arxiv: 1301.1538 · arxiv_version: 1301.1538v2 · doi: 10.48550/arxiv.1301.1538 · pith_short_12: SAQ4CVLZGIYC · pith_short_16: SAQ4CVLZGIYCECVC · pith_short_8: SAQ4CVLZ

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/SAQ4CVLZGIYCECVCQRRDB5XQGT \
  | 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: 9021c155793230220aa2846230f6f034d49a9e1a4bf94d1e92a54302a740e83a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1e31d3e2321c82f3d361f104cd38e0ec4fbd6c57446244272d13eb924bcc8681",
    "cross_cats_sorted": [
      "quant-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2013-01-08T14:07:24Z",
    "title_canon_sha256": "dd235febd14aeb2d6694d706242d293b3416374b604a71e738d1abc8e941a9e3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1301.1538",
    "kind": "arxiv",
    "version": 2
  }
}