LV, Lv or lv may refer to: Arts and entertainment Experience level or Level (video gaming), in video games and/or role-playing games LV (album), a live EP by the rock band Chickenfoot Businesses a
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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7f8fa8ea44688169785ca20c35977de01d6c4eafc36c4d62b685609e0e22b0b. 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/47b59093-e23d-4dd2-9e7d-f7b209925565.json and https://artists.proofprofile.net/proofs/artist/47b59093-e23d-4dd2-9e7d-f7b209925565.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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeae4d1853523181442b4aabec473eb9211e3bb2795bab900c1ceae50a0db0c77. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/BC6M22525198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c7eaa52797876a94cb879e03aff71dc6c589857e24d5ce9b471abb82326490b. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BX85Z2400016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8b0b8270995615e34d30db3a4de681183230caf221d28b553cc95dd444b7ee1. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/BXD2J2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa311d2a0b4efbcc4ab63feb872c943d38d8c095e4b6d00e37d69155801730e27. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/BXD2J2400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7be7a814de4fd64d1d4ea526053523c93e2aabb7493be98211abaf866daaa923. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/BCD592400141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc37d50f81b1876005c4cb2ca52d592113ae968462a5444189038265d0ea96ff8. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BRWMB2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1573a37c60c7b7fc61110ff8c09afc9cb11277018e53b87a46e8a7a02259619. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BRWMB2400331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5fc9079e04e7112e86ce18fd553dca64c46941c8af328b97552bc71bc2596ce. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/BRWMB2400588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc37d50f81b1876005c4cb2ca52d592113ae968462a5444189038265d0ea96ff8. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/BRWMB2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae8a8e247767b545467e212749884b997de95372031deb21022f21fc27b1e935. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/BRWMB2400462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77462a1aea94e6f16afce2928a3a90f7bec31bd80865ed512307c965d5d247f8. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/BRWMB2400471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1ec548b05d82ff652bd82303750d36f9f2cfd3f52c7ab9ddfb775015005b6c9. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/BRWMB2400480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1573a37c60c7b7fc61110ff8c09afc9cb11277018e53b87a46e8a7a02259619. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/BRWMB2400331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x214bb3276bc42716c8d67e52e6b14492b7044ead7d227322e08f3d80e2e55d75. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/BK4PB2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b5736d4ce3bbf57d353f39b683d95d06f59287e1c3b95aa1117236b5f17ee23. 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/BCD592400123.