Pith Number

pith:QRAKXCRR

pith:2010:QRAKXCRRJHOTLP5FYUJE6SACXB

not attested not anchored not stored refs pending

Linear Recursion

(2) King's College London, (3) \'Ecole Polytechnique), Ian Mackie (3) ((1) University of Porto, Maribel Fern\'andez (2), M\'ario Florido (1), Sandra Alves (1)

arxiv:1001.3368 v4 · 2010-01-19 · cs.LO · cs.PL

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QRAKXCRRJHOTLP5FYUJE6SACXB}

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	2026-05-18T00:56:47.176728Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8440ab8a3149dd35bfa5c5124f4802b87e534a6ebc0552f212bbe2d779f54129

Aliases

arxiv: 1001.3368 · arxiv_version: 1001.3368v4 · doi: 10.48550/arxiv.1001.3368 · pith_short_12: QRAKXCRRJHOT · pith_short_16: QRAKXCRRJHOTLP5F · pith_short_8: QRAKXCRR

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/QRAKXCRRJHOTLP5FYUJE6SACXB \
  | 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: 8440ab8a3149dd35bfa5c5124f4802b87e534a6ebc0552f212bbe2d779f54129

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "469396bfea5f5c48584149e2049caf72f6787f426f4cea6c764b02f407295540",
    "cross_cats_sorted": [
      "cs.PL"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2010-01-19T17:38:25Z",
    "title_canon_sha256": "470f863c4da8e8575843661f7db66119d4489ef83443b3b8ffe589702e5e2a66"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1001.3368",
    "kind": "arxiv",
    "version": 4
  }
}