Pith Number

pith:UC42FGUW

pith:2018:UC42FGUWYJ6CKRHBUF4DZXA7AF

not attested not anchored not stored refs pending

On the Backus average of layers with randomly oriented elasticity tensors

Len Bos, Michael A. Slawinski, Theodore Stanoev

arxiv:1804.06891 v1 · 2018-04-18 · physics.geo-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{UC42FGUWYJ6CKRHBUF4DZXA7AF}

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	2026-05-18T00:18:04.828854Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a0b9a29a96c27c2544e1a1783cdc1f014bade309cdc0e31450db6c8500ff2a09

Aliases

arxiv: 1804.06891 · arxiv_version: 1804.06891v1 · doi: 10.48550/arxiv.1804.06891 · pith_short_12: UC42FGUWYJ6C · pith_short_16: UC42FGUWYJ6CKRHB · pith_short_8: UC42FGUW

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/UC42FGUWYJ6CKRHBUF4DZXA7AF \
  | 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: a0b9a29a96c27c2544e1a1783cdc1f014bade309cdc0e31450db6c8500ff2a09

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "15902f39d333197a98c32cb1962ebd920d24a79038087951f02f3d93eac7adc0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.geo-ph",
    "submitted_at": "2018-04-18T19:44:37Z",
    "title_canon_sha256": "3311c16f9a09bc09e13df073a89d20db6bd69ea1c61fcc322161aa861881f475"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1804.06891",
    "kind": "arxiv",
    "version": 1
  }
}