Pith Number

pith:DQVL5GC2

pith:2009:DQVL5GC2NHWOLPDJCKZFWBK4LZ

not attested not anchored not stored refs pending

Time's Barbed Arrow: Irreversibility, Crypticity, and Stored Information

Christopher J. Ellison, James P. Crutchfield, John R. Mahoney

arxiv:0902.1209 v1 · 2009-02-07 · cond-mat.stat-mech · cond-mat.dis-nn

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{DQVL5GC2NHWOLPDJCKZFWBK4LZ}

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	2026-05-18T03:24:07.996456Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1c2abe985a69ece5bc6912b25b055c5e43eba0b7ea4d7b1fbe9985334c73df31

Aliases

arxiv: 0902.1209 · arxiv_version: 0902.1209v1 · doi: 10.48550/arxiv.0902.1209 · pith_short_12: DQVL5GC2NHWO · pith_short_16: DQVL5GC2NHWOLPDJ · pith_short_8: DQVL5GC2

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/DQVL5GC2NHWOLPDJCKZFWBK4LZ \
  | 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: 1c2abe985a69ece5bc6912b25b055c5e43eba0b7ea4d7b1fbe9985334c73df31

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "efc0fde090edc4c0d4ac93a9cba740f40c1d54499fb2102bfed1a0decaa51f9b",
    "cross_cats_sorted": [
      "cond-mat.dis-nn"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cond-mat.stat-mech",
    "submitted_at": "2009-02-07T01:19:36Z",
    "title_canon_sha256": "56fbbcff646c9a3d97ecdf28f8823cd1dda60609fe75cfc31da65b8f472d4f90"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0902.1209",
    "kind": "arxiv",
    "version": 1
  }
}