The acronym LVZ can stand for: Low-velocity zone, in tectonics Leipziger Volkszeitung, a daily newspaper in Leipzig, Germany
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60e6e170dd5cda2265844a47990dbf1d9e785d2c75e7f5661769c7b9ec835456. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4b401b67-bcf0-4ea6-b3d7-6b0c5582d76a.json and https://artists.proofprofile.net/proofs/artist/4b401b67-bcf0-4ea6-b3d7-6b0c5582d76a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x720d6486afe992dd3806143974eb55246d607305cfa31cfe49a17c046d27a08d. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T09:57:30Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFYZ2031865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fc73fa8ae0bba9a72bcd10e5c033fa12f3f060b19123624199e3c9e977b3be5. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRUM72301418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d011b9e79066dfacd94ea26e923b93134015350358feae9857d0c5376cf7979. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRUM72302302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8828a86eeb335aee692fc722e900fe984457f8a543650e129c4ac7a925b6cdf7. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRUM72302306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8a566cc2a52541663490ef6c69ffb559525bfa7c51e07c773086c26d44957b3. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-17T00:12:15Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRUM72302307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46496cc52b33a46bf01f16c49e1443efc6d741d2236fb4b4e8f82cf7bd5980a1. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRUM72302308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03f1352507a0d01193d18771910d9c0a00ce5a6c5fe7f385a398ed7131176512. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRUM72302025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f4a31b17e824a450f2e480455fd14bcc357628ce21446429c72015b67204525. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRUM72302309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61b8fd29170c7094bbd7df3d2d468da6d9ff90e3c1c4f0f9d8c8f6c98441a814. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRUM72302310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3535ce26484b2643a41eaf369e3f64bc308ef4d9dbba4540b56e683d2e4446e. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRUM72302311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1a77b5181a8ee8f5587930e8fa5c065dc3de1a2f1b4198786fb2f4e6f5c051c. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRUM72302312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03c903b3dec1f025be89fc8cd89b5d2d026abb7d1a85134c1a3222bdaf139b20. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRUM72302313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3053e5dba92b4846189268e223a1a5850dedb7f6c2e37f3c814c66479ff5b537. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:38:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFT2428117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37febfc2c55f621bd301185a588958f28866323e3ad5898c4552fcb09cf92397. Chain 2 (Bitcoin): anchored in block 958496 (2026-07-18T04:43:53Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTBE2479499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bfe37b0fa966ac9cd3e58b902f3bad96eb37d3f3435936852be78e6712808b9. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR6P12300020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf272104db510abd9782c9dc955c02c3e11094fd4890ecf8e06ffd9cc9fb78518. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR2X42122434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x177d420a0f32b7547b4101730f9a49882d40d9f95b50fa70bc3297a9201500f8. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM6MZ2257806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x177d420a0f32b7547b4101730f9a49882d40d9f95b50fa70bc3297a9201500f8. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM6MZ2257806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x145507b1d8ab7c77c3c4c747af6b3441a3cd3dd1549908924aeccf3bcc9204b7. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FXQ022303603.
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch