Pith Number

pith:PLKOFPEY

pith:2013:PLKOFPEYVHVOL5WANZ26XSUP7H

not attested not anchored not stored refs pending

Does Information Have Mass?

Claes-Goran Granqvist, Laszlo B. Kish

arxiv:1309.7889 v1 · 2013-09-14 · physics.class-ph · 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{PLKOFPEYVHVOL5WANZ26XSUP7H}

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	2026-05-18T03:11:47.917910Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7ad4e2bc98a9eae5f6c06e75ebca8ff9f8f420eaea9eea231f788d13ac3a54d6

Aliases

arxiv: 1309.7889 · arxiv_version: 1309.7889v1 · doi: 10.48550/arxiv.1309.7889 · pith_short_12: PLKOFPEYVHVO · pith_short_16: PLKOFPEYVHVOL5WA · pith_short_8: PLKOFPEY

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/PLKOFPEYVHVOL5WANZ26XSUP7H \
  | 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: 7ad4e2bc98a9eae5f6c06e75ebca8ff9f8f420eaea9eea231f788d13ac3a54d6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d27a09d4fc85b01684bea4586156f81cc750eddcc5bd6051c8db216c7e362bbe",
    "cross_cats_sorted": [
      "quant-ph"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-sa/3.0/",
    "primary_cat": "physics.class-ph",
    "submitted_at": "2013-09-14T23:41:31Z",
    "title_canon_sha256": "ec03f739d75ed25a22a8aceaf72a5cfe9c17a5be362beb5f6c986489b8575fd2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1309.7889",
    "kind": "arxiv",
    "version": 1
  }
}