Pith Number

pith:UPX42LPN

pith:2021:UPX42LPNL5DE4GXNWMAVIGKLUO

not attested not anchored not stored refs pending

Free agency and determinism: is there a sensible definition of computational sourcehood?

Marius Krumm, Markus P. Mueller

arxiv:2101.12033 v2 · 2021-01-27 · physics.hist-ph · cs.CC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{UPX42LPNL5DE4GXNWMAVIGKLUO}

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	2026-07-05T06:17:35.540401Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a3efcd2ded5f464e1aedb30154194ba39dbf1409ad8cb4542e98fbe2b46b4c21

Aliases

arxiv: 2101.12033 · arxiv_version: 2101.12033v2 · doi: 10.48550/arxiv.2101.12033 · pith_short_12: UPX42LPNL5DE · pith_short_16: UPX42LPNL5DE4GXN · pith_short_8: UPX42LPN

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/UPX42LPNL5DE4GXNWMAVIGKLUO \
  | 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: a3efcd2ded5f464e1aedb30154194ba39dbf1409ad8cb4542e98fbe2b46b4c21

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "39f475b61443ed3e10d27021f602c8eb710fa6e7452096ace2bf41ee56bbe7fa",
    "cross_cats_sorted": [
      "cs.CC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.hist-ph",
    "submitted_at": "2021-01-27T16:19:54Z",
    "title_canon_sha256": "a40ecee53669f837973c5cd778771d54ef2220f5e7c30934e62b27f8777f96e7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2101.12033",
    "kind": "arxiv",
    "version": 2
  }
}