Pith Number

pith:RDFMEI3G

pith:2019:RDFMEI3GR2JVMABRRMT5PI7I5E

not attested not anchored not stored refs pending

Active inference: demystified and compared

Karl J. Friston, Noor Sajid, Philip J. Ball, Thomas Parr

arxiv:1909.10863 v3 · 2019-09-24 · cs.AI · q-bio.QM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{RDFMEI3GR2JVMABRRMT5PI7I5E}

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	2026-07-05T02:14:40.460089Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

88cac223668e935600318b27d7a3e8e91633942251f66dac808d987ac6d52a59

Aliases

arxiv: 1909.10863 · arxiv_version: 1909.10863v3 · doi: 10.48550/arxiv.1909.10863 · pith_short_12: RDFMEI3GR2JV · pith_short_16: RDFMEI3GR2JVMABR · pith_short_8: RDFMEI3G

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/RDFMEI3GR2JVMABRRMT5PI7I5E \
  | 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: 88cac223668e935600318b27d7a3e8e91633942251f66dac808d987ac6d52a59

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "91041569ed6f3fc1a50bcb6f1b79bb5536a109aa79285133dcb4a8c46844b7a0",
    "cross_cats_sorted": [
      "q-bio.QM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.AI",
    "submitted_at": "2019-09-24T13:08:53Z",
    "title_canon_sha256": "a6e535892f94fcb3ef736946db10e55240370879acfee36cacb8360280676f2c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1909.10863",
    "kind": "arxiv",
    "version": 3
  }
}