Pith Number

pith:LZXNJSFM

pith:2000:LZXNJSFM2XNOHPKD4DDS4IEU7E

not attested not anchored not stored refs pending

Interstellar Hydrogen and Cosmic Background Radiation

B.G. Sidharth

arxiv:physics/0004036 v1 · 2000-04-18 · physics.gen-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{LZXNJSFM2XNOHPKD4DDS4IEU7E}

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	2026-05-18T01:38:11.550156Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5e6ed4c8acd5dae3bd43e0c72e2094f90bec9f4919fc7c50bb35b1ee91e55957

Aliases

arxiv: physics/0004036 · arxiv_version: physics/0004036v1 · doi: 10.48550/arxiv.physics/0004036 · pith_short_12: LZXNJSFM2XNO · pith_short_16: LZXNJSFM2XNOHPKD · pith_short_8: LZXNJSFM

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/LZXNJSFM2XNOHPKD4DDS4IEU7E \
  | 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: 5e6ed4c8acd5dae3bd43e0c72e2094f90bec9f4919fc7c50bb35b1ee91e55957

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6cf20c59f25105d05636b1d683a2f7d3630c4ba6b94c327b33ad1639c03a17dc",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "physics.gen-ph",
    "submitted_at": "2000-04-18T13:30:30Z",
    "title_canon_sha256": "1385afec13cfebe77ed53022b69857e0944764ef6e6cbefe62f1bc583f561b67"
  },
  "schema_version": "1.0",
  "source": {
    "id": "physics/0004036",
    "kind": "arxiv",
    "version": 1
  }
}