Pith Number

pith:5QN6ZXB2

pith:2005:5QN6ZXB2SZBB6REMFAJMEUPKMT

not attested not anchored not stored refs pending

A Quantum Yield Map for Synthetic Eumelanin

Jennifer Riesz, Joel Gilmore, Paul Meredith, Stephen Nighswander-Rempel

arxiv:physics/0505202 v2 · 2005-05-30 · physics.chem-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{5QN6ZXB2SZBB6REMFAJMEUPKMT}

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	2026-07-04T16:57:14.595600Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ec1becdc3a96421f448c2812c251ea64ec0e08bb5050cca75b62f5fbd676f53f

Aliases

arxiv: physics/0505202 · arxiv_version: physics/0505202v2 · doi: 10.48550/arxiv.physics/0505202 · pith_short_12: 5QN6ZXB2SZBB · pith_short_16: 5QN6ZXB2SZBB6REM · pith_short_8: 5QN6ZXB2

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/5QN6ZXB2SZBB6REMFAJMEUPKMT \
  | 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: ec1becdc3a96421f448c2812c251ea64ec0e08bb5050cca75b62f5fbd676f53f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1f6a9466b880f31b2bdb5e9956b95aad0d174fc238480db9096dcf563968d80c",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "physics.chem-ph",
    "submitted_at": "2005-05-30T07:05:05Z",
    "title_canon_sha256": "8f5f74533adc854ab3179b1844b854cfca00e147b82b62b493caa6caeb6e68a2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "physics/0505202",
    "kind": "arxiv",
    "version": 2
  }
}