Pith Number

pith:QP5MTYFW

pith:2004:QP5MTYFWEYEQVQEUM7SLSCHRZ7

not attested not anchored not stored refs pending

Quantitative photoluminescence of broad band absorbing melanins: A procedure to correct for inner filter and re-absorption effects

Jennifer Riesz, Joel Gilmore, Paul Meredith

arxiv:physics/0408041 v1 · 2004-08-09 · physics.bio-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{QP5MTYFWEYEQVQEUM7SLSCHRZ7}

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	2026-05-18T01:38:08.297245Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

83fac9e0b626090ac09467e4b908f1cfe071bbd5b929d0a33105de962a98c8ee

Aliases

arxiv: physics/0408041 · arxiv_version: physics/0408041v1 · doi: 10.48550/arxiv.physics/0408041 · pith_short_12: QP5MTYFWEYEQ · pith_short_16: QP5MTYFWEYEQVQEU · pith_short_8: QP5MTYFW

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/QP5MTYFWEYEQVQEUM7SLSCHRZ7 \
  | 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: 83fac9e0b626090ac09467e4b908f1cfe071bbd5b929d0a33105de962a98c8ee

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2cd1bffa1eca82258332e8eed99f29330d54334adce6b1dce1657eb24ecd48d0",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "physics.bio-ph",
    "submitted_at": "2004-08-09T02:16:35Z",
    "title_canon_sha256": "cebcc2ee37d1c3bd815be9156098ec385b7ba40059748070bb96c3a5932cc7b5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "physics/0408041",
    "kind": "arxiv",
    "version": 1
  }
}