Pith Number

pith:ML4F5JTN

pith:2015:ML4F5JTNOAOJ5SUINDLMEU5I3F

not attested not anchored not stored refs pending

How predictable is technological progress?

Francois Lafond, J. Doyne Farmer

arxiv:1502.05274 v4 · 2015-02-18 · q-fin.EC · 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{ML4F5JTNOAOJ5SUINDLMEU5I3F}

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	2026-05-18T00:50:07.143480Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

62f85ea66d701c9eca8868d6c253a8d9421bf0446a1cc48a9613e0a7e5d4d2c2

Aliases

arxiv: 1502.05274 · arxiv_version: 1502.05274v4 · doi: 10.48550/arxiv.1502.05274 · pith_short_12: ML4F5JTNOAOJ · pith_short_16: ML4F5JTNOAOJ5SUI · pith_short_8: ML4F5JTN

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/ML4F5JTNOAOJ5SUINDLMEU5I3F \
  | 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: 62f85ea66d701c9eca8868d6c253a8d9421bf0446a1cc48a9613e0a7e5d4d2c2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3ed4318f5f653d8f6d5cfecc19de7edd6a791542931ec444e72af9ecea6f20e5",
    "cross_cats_sorted": [
      "physics.soc-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "q-fin.EC",
    "submitted_at": "2015-02-18T15:32:12Z",
    "title_canon_sha256": "38e9a014529f41d02444c75c7e457175b5bd3ae6f22ea56b00b7b5f4b5d9bb82"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1502.05274",
    "kind": "arxiv",
    "version": 4
  }
}