Pith Number

pith:NNC4X7M4

pith:2011:NNC4X7M4IT25ORHJPQIQBKLDFI

not attested not anchored not stored refs pending

Effective Free Energy for Individual Dynamics

Dominic Hunt, Eric Bertin, Pablo Jensen, Sebastian Grauwin

arxiv:1108.4855 v1 · 2011-08-24 · 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{NNC4X7M4IT25ORHJPQIQBKLDFI}

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	2026-05-18T04:14:46.645010Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6b45cbfd9c44f5d744e97c1100a9632a26b4d5239cc3ec9a6d373bf81b25fc63

Aliases

arxiv: 1108.4855 · arxiv_version: 1108.4855v1 · doi: 10.48550/arxiv.1108.4855 · pith_short_12: NNC4X7M4IT25 · pith_short_16: NNC4X7M4IT25ORHJ · pith_short_8: NNC4X7M4

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/NNC4X7M4IT25ORHJPQIQBKLDFI \
  | 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: 6b45cbfd9c44f5d744e97c1100a9632a26b4d5239cc3ec9a6d373bf81b25fc63

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "27be5d1f16b25a0d69e66dfd83b1f99a837576012e0441392e8234fe78d24f11",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.soc-ph",
    "submitted_at": "2011-08-24T14:46:09Z",
    "title_canon_sha256": "7aa4b0dcd8853e4cd578db2c5625eb6073298010f2e6f1575d845c4d2ce24574"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1108.4855",
    "kind": "arxiv",
    "version": 1
  }
}