Luza or Luža may refer to: Luza (river), a river in Russia, a right tributary of the Yug Luza, Luzsky District, Kirov Oblast, a town in Luzsky District of Kirov Oblast, Russia Luža, Kočevje, former
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 0x8f1d2ec8a46de829aa1a2a72f3cbae67cdef4772fa06180e7bea4b7cc9090da7. 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/99a5d416-77af-4400-8bf4-26d87baf31bb.json and https://artists.proofprofile.net/proofs/artist/99a5d416-77af-4400-8bf4-26d87baf31bb.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 0x905a90dcb28f0054cf0efef7fc3fb85113cc8cb84eb22687b89aaf4b1ddc332b. Chain 2 (Bitcoin): anchored in block 958625 (2026-07-18T23:11:57Z), 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/SKG771500204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5dab503461126b4c80e66821e9e003743b0635eb6b8f6270073e20bb1176ec3. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/SKG771500206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x304182ef328d0f6206772e5e49248cdf6464d6a713a780c35f67bce707d1824a. Chain 2 (Bitcoin): anchored in block 958625 (2026-07-18T23:11:57Z), 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/SKG771500207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68b93e276ae7b8e9dc8f78f69953d469d2eb550efb4d651ddfd4e7286d6d556b. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/SKG771500208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb6464546812a6bf107378595cc7287a04bf53ddf41ee258fce56c7565f752c8. Chain 2 (Bitcoin): anchored in block 958558 (2026-07-18T13:44:16Z), 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/SKG771500210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa08832e22646a6c8f176e77aafc44e47235d6017107e7eafb9792884da8ef1aa. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/SKG771500211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf163f36439686474059207443bfdca3a8f58422135724b9fd1e0c52af28ab9e. Chain 2 (Bitcoin): anchored in block 958706 (2026-07-19T08:50:34Z), 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/SKG771500212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73ac657e7dd13971f2a5ee26b613145329eb7bd8e136207be6f65974d20435d9. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/SKG771500213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ccf68f485c4648e05e0bfbc879387126632beb3e669117bc3a09f74d53bb82e. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/SKG771500216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5c14655c4e524c380f25155619488b26b892de711e6e7fd01f1cb5b1e648301. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/SKG771500217.