Pith Number

pith:DPVLOF2F

pith:2016:DPVLOF2F677AG2MXMTVBXBUCUQ

not attested not anchored not stored refs pending

Birefringence phenomena revisited

Baltazar J. Ribeiro, Bruno Gon\c{c}alves, Dante D. Pereira

arxiv:1604.01800 v1 · 2016-04-06 · physics.optics

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{DPVLOF2F677AG2MXMTVBXBUCUQ}

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	2026-05-18T01:17:32.079060Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1beab71745f7fe03699764ea1b8682a41f19d4f6f40ef95c1004ea0c182a691b

Aliases

arxiv: 1604.01800 · arxiv_version: 1604.01800v1 · doi: 10.48550/arxiv.1604.01800 · pith_short_12: DPVLOF2F677A · pith_short_16: DPVLOF2F677AG2MX · pith_short_8: DPVLOF2F

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/DPVLOF2F677AG2MXMTVBXBUCUQ \
  | 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: 1beab71745f7fe03699764ea1b8682a41f19d4f6f40ef95c1004ea0c182a691b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3ebf65b686a71c3636c81c7c74f1ee5a04a4d36d9a70b9e8325abc320f54cfa5",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2016-04-06T20:25:15Z",
    "title_canon_sha256": "8d4190c6be1c256c3b51317d1678d1c01271a97bb0c278ee905571f831010571"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1604.01800",
    "kind": "arxiv",
    "version": 1
  }
}