Pith Number

pith:D56ZC6V7

pith:2016:D56ZC6V7WWEFITNU44JCQNRETZ

not attested not anchored not stored refs pending

Trees That Grow

Shayan Najd, Simon Peyton Jones

arxiv:1610.04799 v1 · 2016-10-15 · 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{D56ZC6V7WWEFITNU44JCQNRETZ}

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	2026-05-18T01:02:07.029296Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1f7d917abfb588544db4e7122836249e6f8a2db0d47a8bb9c4f32dc46060b729

Aliases

arxiv: 1610.04799 · arxiv_version: 1610.04799v1 · doi: 10.48550/arxiv.1610.04799 · pith_short_12: D56ZC6V7WWEF · pith_short_16: D56ZC6V7WWEFITNU · pith_short_8: D56ZC6V7

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/D56ZC6V7WWEFITNU44JCQNRETZ \
  | 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: 1f7d917abfb588544db4e7122836249e6f8a2db0d47a8bb9c4f32dc46060b729

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0e2b299e6a93b58155c5a8d0e407409cfdedf15629d107bde8e63d0b867d40a5",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.PL",
    "submitted_at": "2016-10-15T23:43:48Z",
    "title_canon_sha256": "fac1335af6d70e7f19d5c3552050131365fa45d3398a1689745ffe1986cbf874"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1610.04799",
    "kind": "arxiv",
    "version": 1
  }
}