Pith Number

pith:5A6NSWD7

pith:2020:5A6NSWD7R2ZRWE7DUMFZERSOAM

not attested not anchored not stored refs pending

A brief introduction to observational entropy

Anthony Aguirre, Dominik \v{S}afr\'anek, J. M. Deutsch, Joseph Schindler

arxiv:2008.04409 v2 · 2020-08-10 · quant-ph · cond-mat.quant-gas · cond-mat.stat-mech

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{5A6NSWD7R2ZRWE7DUMFZERSOAM}

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.

Cited by

2 papers in Pith

Rethinking quantum information in gravity and fields

Toward a Phenomenologically Acceptable Quantum Cyclic Universe

Receipt and verification

First computed	2026-07-05T03:26:13.554081Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e83cd9587f8eb31b13e3a30b92464e033f7cec21f857bc95e323ab195f16af3a

Aliases

arxiv: 2008.04409 · arxiv_version: 2008.04409v2 · doi: 10.48550/arxiv.2008.04409 · pith_short_12: 5A6NSWD7R2ZR · pith_short_16: 5A6NSWD7R2ZRWE7D · pith_short_8: 5A6NSWD7

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/5A6NSWD7R2ZRWE7DUMFZERSOAM \
  | 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: e83cd9587f8eb31b13e3a30b92464e033f7cec21f857bc95e323ab195f16af3a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "81e618442f179db9a2d633f018b1943a8fdc17e4d09e56679a754c9c94176723",
    "cross_cats_sorted": [
      "cond-mat.quant-gas",
      "cond-mat.stat-mech"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2020-08-10T20:55:35Z",
    "title_canon_sha256": "b9b08ce24e5c6bf03ce2c15be2ee4d624e4c8303770ade13e2015e13b071329d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2008.04409",
    "kind": "arxiv",
    "version": 2
  }
}