Pith Number

pith:ZCFTI5Q5

pith:2008:ZCFTI5Q5IO34V53GRJQABNGEEW

not attested not anchored not stored refs pending

Nonlinear regularization techniques for seismic tomography

C. Regone, G. Nolet, H. Douma, I. Daubechies, I. Loris

arxiv:0808.3472 v3 · 2008-08-26 · 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{ZCFTI5Q5IO34V53GRJQABNGEEW}

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	2026-05-18T04:42:04.045185Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c88b34761d43b7caf7668a6000b4c425880641a6125004c0864138cf3bf68e12

Aliases

arxiv: 0808.3472 · arxiv_version: 0808.3472v3 · doi: 10.48550/arxiv.0808.3472 · pith_short_12: ZCFTI5Q5IO34 · pith_short_16: ZCFTI5Q5IO34V53G · pith_short_8: ZCFTI5Q5

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/ZCFTI5Q5IO34V53GRJQABNGEEW \
  | 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: c88b34761d43b7caf7668a6000b4c425880641a6125004c0864138cf3bf68e12

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fcfbdf93464bd98cc25adaefb85fd26d1a719f44f717fd6fcafc9890814a779a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.geo-ph",
    "submitted_at": "2008-08-26T10:04:05Z",
    "title_canon_sha256": "b6058842f31f7493cd9faeeac6dae905f8cd65572fae14b23ada27e485fac1b2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0808.3472",
    "kind": "arxiv",
    "version": 3
  }
}