Pith Number

pith:CZUSLBRQ

pith:2015:CZUSLBRQV7RMH7GBWXHFDZIQVI

not attested not anchored not stored refs pending

The Radical Pair Mechanism and the Avian Chemical Compass: Quantum Coherence and Entanglement

Gennady P. Berman, Sabre Kais, Yiteng Zhang

arxiv:1502.00671 v2 · 2015-02-02 · physics.bio-ph · quant-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{CZUSLBRQV7RMH7GBWXHFDZIQVI}

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	2026-05-18T02:20:39.400978Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1669258630afe2c3fcc1b5ce51e510aa0aa711f96d82d8c70ee4d07ed6ebfa8c

Aliases

arxiv: 1502.00671 · arxiv_version: 1502.00671v2 · doi: 10.48550/arxiv.1502.00671 · pith_short_12: CZUSLBRQV7RM · pith_short_16: CZUSLBRQV7RMH7GB · pith_short_8: CZUSLBRQ

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/CZUSLBRQV7RMH7GBWXHFDZIQVI \
  | 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: 1669258630afe2c3fcc1b5ce51e510aa0aa711f96d82d8c70ee4d07ed6ebfa8c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "58f383ba147a25c270f782ed4aeff1215871d2e5706fa7439d7e05f3442d7303",
    "cross_cats_sorted": [
      "quant-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.bio-ph",
    "submitted_at": "2015-02-02T22:19:25Z",
    "title_canon_sha256": "bb76af6f8da4ba0e563000799205a4695c362dfbcd2f25a0dcc011e4be74ae13"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1502.00671",
    "kind": "arxiv",
    "version": 2
  }
}