Pith Number

pith:RJZHNO7V

pith:2022:RJZHNO7VSWHKJ3KESDHUJPTD52

not attested not anchored not stored refs pending

pymdp: A Python library for active inference in discrete state spaces

Alexander Tschantz, Beren Millidge, Brennan Klein, Conor Heins, Daphne Demekas, Iain Couzin, Karl Friston

arxiv:2201.03904 v2 · 2022-01-11 · cs.AI · cs.MS · q-bio.NC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{RJZHNO7VSWHKJ3KESDHUJPTD52}

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.

Cited by

1 paper in Pith

Active Inference and Human--Computer Interaction

Receipt and verification

First computed	2026-07-05T04:20:32.434022Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8a7276bbf5958ea4ed4490cf44be63eebff3b48b46623fcc7bf56494171a486a

Aliases

arxiv: 2201.03904 · arxiv_version: 2201.03904v2 · doi: 10.48550/arxiv.2201.03904 · pith_short_12: RJZHNO7VSWHK · pith_short_16: RJZHNO7VSWHKJ3KE · pith_short_8: RJZHNO7V

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/RJZHNO7VSWHKJ3KESDHUJPTD52 \
  | 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: 8a7276bbf5958ea4ed4490cf44be63eebff3b48b46623fcc7bf56494171a486a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f29af38f29d19d2589dd271e1e46d20783ea2c481ebf53e7359fee17caecf402",
    "cross_cats_sorted": [
      "cs.MS",
      "q-bio.NC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.AI",
    "submitted_at": "2022-01-11T12:18:44Z",
    "title_canon_sha256": "6625a9340ae262eea0c594c178582a4b72b8aee3ecd5b719fdb48f5ce4080752"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2201.03904",
    "kind": "arxiv",
    "version": 2
  }
}