Pith Number

pith:2C72USPL

pith:2017:2C72USPLC65KKVBXLX373YVF6G

not attested not anchored not stored refs pending

Causal Density Matrices

Netta Engelhardt, Sebastian Fischetti

arxiv:1703.05328 v3 · 2017-03-15 · hep-th · gr-qc

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2C72USPLC65KKVBXLX373YVF6G}

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	2026-05-18T00:40:58.573939Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d0bfaa49eb17baa554375df7fde2a5f1b123c9408ce2b365cf3927eeac6c3c76

Aliases

arxiv: 1703.05328 · arxiv_version: 1703.05328v3 · doi: 10.48550/arxiv.1703.05328 · pith_short_12: 2C72USPLC65K · pith_short_16: 2C72USPLC65KKVBX · pith_short_8: 2C72USPL

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/2C72USPLC65KKVBXLX373YVF6G \
  | 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: d0bfaa49eb17baa554375df7fde2a5f1b123c9408ce2b365cf3927eeac6c3c76

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2c39570e7461cbc3d46523d8cd5604ddc188eb6cac779018de09b05bd9bf0e8a",
    "cross_cats_sorted": [
      "gr-qc"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "hep-th",
    "submitted_at": "2017-03-15T18:00:01Z",
    "title_canon_sha256": "61c38de14f51e2d829ad612e4ca0e8c6ee91d6feb73c43d323b010147248767a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1703.05328",
    "kind": "arxiv",
    "version": 3
  }
}