Pith Number

pith:QIMCJDXX

pith:2014:QIMCJDXXELLQGNCA6IGHZ7HXVX

not attested not anchored not stored refs pending

Invariant types in NIP theories

Pierre Simon

arxiv:1401.6715 v2 · 2014-01-27 · math.LO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QIMCJDXXELLQGNCA6IGHZ7HXVX}

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	2026-05-18T01:27:36.989218Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8218248ef722d7033440f20c7cfcf7addfa3e42791cd4cd737363761c79b0410

Aliases

arxiv: 1401.6715 · arxiv_version: 1401.6715v2 · doi: 10.48550/arxiv.1401.6715 · pith_short_12: QIMCJDXXELLQ · pith_short_16: QIMCJDXXELLQGNCA · pith_short_8: QIMCJDXX

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/QIMCJDXXELLQGNCA6IGHZ7HXVX \
  | 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: 8218248ef722d7033440f20c7cfcf7addfa3e42791cd4cd737363761c79b0410

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b7a165ae5925607dd6631f22177000dea1f79e0c1bbcc86848a31c4d923c0c86",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2014-01-27T02:00:33Z",
    "title_canon_sha256": "baba84d6218799ea946a990a41802456d8cdd8cfe6a35a28fc7160e85d7716b0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1401.6715",
    "kind": "arxiv",
    "version": 2
  }
}