Pith Number

pith:NANGHFWW

pith:2015:NANGHFWWVWJGKYHBAND3CIQGTH

not attested not anchored not stored refs pending

Collapsing Threads Safely with Soft Invariants

David Friggens, Lindsay Groves

arxiv:1512.09186 v1 · 2015-12-31 · cs.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{NANGHFWWVWJGKYHBAND3CIQGTH}

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	2026-05-18T01:23:33.073760Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

681a6396d6ad926560e10347b1220699e8a570f77603826b88048036b7fa5a17

Aliases

arxiv: 1512.09186 · arxiv_version: 1512.09186v1 · doi: 10.48550/arxiv.1512.09186 · pith_short_12: NANGHFWWVWJG · pith_short_16: NANGHFWWVWJGKYHB · pith_short_8: NANGHFWW

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/NANGHFWWVWJGKYHBAND3CIQGTH \
  | 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: 681a6396d6ad926560e10347b1220699e8a570f77603826b88048036b7fa5a17

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f20d3acec1cda239b9e325e736a6453bb6afe4943319db1db1a68d22296e71ee",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-sa/4.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2015-12-31T00:23:29Z",
    "title_canon_sha256": "b5de578e4f0a5d30739a48ac37a62054024659f72b7959842e2e7ba8fc83163c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1512.09186",
    "kind": "arxiv",
    "version": 1
  }
}