Pith Number

pith:UPNR4IB2

pith:2013:UPNR4IB24XI5YW7PLCFX2BYOE3

not attested not anchored not stored refs pending

Towards a living earth simulator

A. Blandford, A. Krause, B. Edmonds, B.-O. Linn\'er, D. Helbing, D. Kossman, G. Bonelli, J. Kohlhammer, M. Gross, M. Paolucci, N. Gilbert, O. Sorkine, P. Argyrakis, P. Koumoutsakos, P. Lukowicz, P. Slusallek, R. Conte, R.W. Sumner, S. Anderson, S. de Freitas

arxiv:1304.1903 v1 · 2013-04-06 · physics.comp-ph · cs.SI · physics.soc-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{UPNR4IB24XI5YW7PLCFX2BYOE3}

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	2026-05-18T03:28:44.789336Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a3db1e203ae5d1dc5bef588b7d070e26f3e902a92783abe0188a94b5b7670e44

Aliases

arxiv: 1304.1903 · arxiv_version: 1304.1903v1 · doi: 10.48550/arxiv.1304.1903 · pith_short_12: UPNR4IB24XI5 · pith_short_16: UPNR4IB24XI5YW7P · pith_short_8: UPNR4IB2

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/UPNR4IB24XI5YW7PLCFX2BYOE3 \
  | 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: a3db1e203ae5d1dc5bef588b7d070e26f3e902a92783abe0188a94b5b7670e44

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "591699e0c92a2926534bdd8ef771d396abcd57f2e994180d327c4740cede50db",
    "cross_cats_sorted": [
      "cs.SI",
      "physics.soc-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.comp-ph",
    "submitted_at": "2013-04-06T15:25:52Z",
    "title_canon_sha256": "35172158907b8e245d3e0142f333f574419ea0cfb52ceb0b55402427f12f8cc3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1304.1903",
    "kind": "arxiv",
    "version": 1
  }
}