Pith Number

pith:FFBLHUML

pith:2007:FFBLHUMLXEVY6E7LVVTETKYUHL

not attested not anchored not stored refs pending

Reserved-Length Prefix Coding

Michael B. Baer

arxiv:0801.0102 v1 · 2007-12-30 · cs.IT · cs.DS · math.IT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FFBLHUMLXEVY6E7LVVTETKYUHL}

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	2026-07-04T15:06:33.487218Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2942b3d18bb92b8f13ebad6649ab143afccabd4dc2da18d6871fbce3e205342f

Aliases

arxiv: 0801.0102 · arxiv_version: 0801.0102v1 · doi: 10.48550/arxiv.0801.0102 · pith_short_12: FFBLHUMLXEVY · pith_short_16: FFBLHUMLXEVY6E7L · pith_short_8: FFBLHUML

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/FFBLHUMLXEVY6E7LVVTETKYUHL \
  | 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: 2942b3d18bb92b8f13ebad6649ab143afccabd4dc2da18d6871fbce3e205342f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e322a9d108f4feb9cb0be0a58145ac7a186d132d54363c62bcb2ba4dc6ff219b",
    "cross_cats_sorted": [
      "cs.DS",
      "math.IT"
    ],
    "license": "",
    "primary_cat": "cs.IT",
    "submitted_at": "2007-12-30T00:14:24Z",
    "title_canon_sha256": "d7a8100a3a42d8fd42d468e73cd8849ba75f7148df382b7825feb3a7f9aa568b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0801.0102",
    "kind": "arxiv",
    "version": 1
  }
}