Luka may refer to: People Luka (given name), a unisex given name Luka Dončić, Slovenian professional basketball player (born 1999) Luka Modrić, Croatian professional footballer (born 1985) Luka (sing
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 0x18f8456c4b54284a9464f1fec4105dca50429517f4f51af57f6129269135bc7d. Chain 2 (Bitcoin): anchored in block 953713 (2026-06-15T00:33:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7feb42f8-50a5-41b5-87d3-37e6914d743e.json and https://artists.proofprofile.net/proofs/artist/7feb42f8-50a5-41b5-87d3-37e6914d743e.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 0x2730599dc43daac309ef543301f1063bf0c85bf6f3d7d63e7f6fe5ba5ee93634. 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/QZHZ32035280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aa7707ce05619173b0f37320d12fbdbb0cffa8a6389f42289e42c0b03ad9d1b. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/QZNJV2375739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f3a97c2bd900947bfa8a861278db767198b820a7f8a4ff665cd2f70ec1bcbd4. 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/QZHZ42235886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06a769f6510b0e0e00a1197a6d1b8ceb62ed2edd2b02a1c646a15b54e837af48. 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/QZZ8B2467934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4955efa7dd726629140052a89891b75929fc956541a2274e2662aa4fe42b609. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/BCUGR2400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a945307af20df816715829943bebd62cfe0a3389cf206a84f3d60d0a9feca19. 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/BCUGR2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0081fe009006a9102dcc23a5a3ebffb5d0acae75f3a839cda28f3ad23e19676f. 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/QZGLM2005667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeefa3a8ff923ce3cefdc7b744a7037ae2a7e9f892d07a6e65aff680cd766d2c2. 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/QZGLM2005668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56727e17f9841a082f9a12461adca6cfd2615b537a79dbf6bd995e79ad6d9d3f. 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/QZGLM2005669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0b227392c7f7ae2e118412d1b3b9ae31c7419a35b95f04c45d20ea16d7bcfe0. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZGLM2005670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x388586a05f249ec1aa8aff3d8043f54b92f1589a8444bbd7370660c4661de9ab. 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/QZGLM2005671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48e68a3cb16827e5060a15bd45ec82eb3f258149c87747bf6c8e92ce47d3b284. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZGLM2005672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7656f2748747c036f427defb81e4a876ed8389cb295d0b9c3e099cd907c1a2b. 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/QZGLM2005673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f8f82839cb99d5202af1ca10771c4822e39da14f6c18d108823b39233130ae6. 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/QZGLM2005674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8e7d69ad0430b049d01a6d6ed3f544f32cf708ea90bc6d5b7fbf15702e07ce6. 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/QZGLM2005675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe31918ac19c6bd877863b02f3bca0bb3d1926437539d23922d599d3fb99c9aa. 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/QZGLM2005676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e7583523a1db4095cc9c170a57dcc367537f670f9f657951d84902c2b637152. 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/QZGLM2005677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc63224d9a32f467fcd4003c48739407e552415718f66206932e1298609e54717. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/QZGLM2005678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99ea54617c9a3c50b849baf3aba6a7ea672e4c76a21858ff0fe86077b51b3264. 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/QZGLM2005679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedb47110de9f2ae6ed5c89d9dc3aadaa0e5faff23019f89ad4a2d82b794fbade. 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/QZGLM2005680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f99f01f66c95d9a5fb5ef7a514fa46bca8e448213d8716f77ab4bbb1cf125c3. 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/QZGLM2005681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc02e2cd1c1fd5e433f2ec5d77b0644eee355147eae2a86ec15dec3b46405698. 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/QZHZ41962817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e0e703ddc01bff1186d39ea89c1da929538cd258e66f993493bd0689cdfbd13. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZHZ41962818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7de9aad6c84951e4e3d5f0dec2a170c71a53eaf947a5afc97183a6b84f5adabc. 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/QZHZ41962819.