Pith Number

pith:UCI7BNWA

pith:2015:UCI7BNWAY2HXXUTADE2FLSLJM4

not attested not anchored not stored refs pending

Harvesting entropy and quantifying the transition from noise to chaos in a photon-counting feedback loop

Aaron M. Hagerstrom, Rajarshi Roy, Thomas E. Murphy

arxiv:1503.08182 v2 · 2015-03-27 · nlin.CD

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{UCI7BNWAY2HXXUTADE2FLSLJM4}

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	2026-05-18T01:35:39.816121Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a091f0b6c0c68f7bd260193455c969672a98a3bb5a521fd8e46f39631d55be4d

Aliases

arxiv: 1503.08182 · arxiv_version: 1503.08182v2 · doi: 10.48550/arxiv.1503.08182 · pith_short_12: UCI7BNWAY2HX · pith_short_16: UCI7BNWAY2HXXUTA · pith_short_8: UCI7BNWA

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/UCI7BNWAY2HXXUTADE2FLSLJM4 \
  | 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: a091f0b6c0c68f7bd260193455c969672a98a3bb5a521fd8e46f39631d55be4d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "51f034d27d6d002cf275ef7f92bc436a2a86b324e57c411cc1b6c6eb3b035f5c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "nlin.CD",
    "submitted_at": "2015-03-27T18:49:48Z",
    "title_canon_sha256": "7989ecaa8778dcc0c229c9217003164e01057955bf15485b0d92212e9cead435"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1503.08182",
    "kind": "arxiv",
    "version": 2
  }
}