Pith Number

pith:SPIUGSKA

pith:2017:SPIUGSKA4RE4J2IWQBHVR4VBQH

not attested not anchored not stored refs pending

Analysing causal structures with entropy

Mirjam Weilenmann, Roger Colbeck

arxiv:1709.08988 v3 · 2017-09-26 · 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{SPIUGSKA4RE4J2IWQBHVR4VBQH}

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	2026-05-18T00:09:52.948050Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

93d1434940e449c4e916804f58f2a181e0a78eca5edab70cc33b23c642ce2a56

Aliases

arxiv: 1709.08988 · arxiv_version: 1709.08988v3 · doi: 10.48550/arxiv.1709.08988 · pith_short_12: SPIUGSKA4RE4 · pith_short_16: SPIUGSKA4RE4J2IW · pith_short_8: SPIUGSKA

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/SPIUGSKA4RE4J2IWQBHVR4VBQH \
  | 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: 93d1434940e449c4e916804f58f2a181e0a78eca5edab70cc33b23c642ce2a56

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ff42292fc9c0754d2d70bc5c2cfdb56f173dd315eefde3e5d18783f44585c14b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2017-09-26T12:56:46Z",
    "title_canon_sha256": "508ffc3dea24783b839ca9e72b85e0daa6dc1cb1fef620eafe65fcda32f5882d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1709.08988",
    "kind": "arxiv",
    "version": 3
  }
}