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 0x93cc0f007aa8ab40beffe8dca39759d98e1f8ceb5869e5f482d8cc832d684be0. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/63e8d0ed-5a8c-4bb9-94aa-6f5ab8083c87.json and https://artists.proofprofile.net/proofs/artist/63e8d0ed-5a8c-4bb9-94aa-6f5ab8083c87.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Nima Splita Do Splita - 50 God. Splitskog Festivala
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 0x4c1dc99970a6234867acae66bb4ac478b115b7ec3b319668ad4382f30040c00b. 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/HRA047566451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x697ec25f68a822d5f20ef343ace33ba8ab82449461201f7764e3e5700461b330. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/HRA047345084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fcb6bd7cea4462763a93fd3a364cb54b870434409fc4e840d7367e0c58ff811. 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/HRA047043237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87dac5f95ce38a1bce5ea9cd265f2ff3833371223cc2a71bc1aec83a4a59a039. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/HRA040627344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d29f69f6d0e67b80ef4599f73bc6f5be8b7f5156949100813cda9ba9f8bb896. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/HRA047166548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d636141ca4b7f2d2dfe366572f6cd457ba9037050d24db6c5f505e7c13994e6. 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/HRA047015118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74737827d80a3866d570631e57fe31842947d429c9cfca0ea82d8e2f27e1a8b5. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/HRA047226362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64214a151bbe64227f1ebc6d731bffddedebb400cb1237206bcf8a4474b82e42. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/HRA047129310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2d594acce8a691693f3113ad1a813a06bb096a10d7a061809090ae9ce098fc8. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/HRA047313271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16e34b5bcb3e5717c151d58f6ea265944a985841fe4d623899f7d2790f7f28a4. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/HRA047108817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceab22bbd87cd74d4fa37b312c4c4121f137acb2d937c5fad3d43e330290ddd1. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/HRA047126363.
Festival Zabavne Glazbe Split '88 - Veče Zabavnih Melodija
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8b6bf39e97c8879a8ef27198ff00eff24da1e2700ea967463929819660a6057. 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/HRA048816754.
100 Originalnih Pjesama - Splitski Festival - Ništa Kontra Splita
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78935afd1a9b37ce0219e4646515d54c66826681710f1bc5268f9af25b3fbf1d. 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/HRA041165375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9887ad2a50ae5055ed29d84746ce3906012f3dd70000711d9d308c033abea1a. 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/HRA041165374.
Drugi Joj Raspliće Kosu A Ja Je Volim - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78f90698ade112eef83c74bf697ec706f766c6b1c1e07305562735189ff0ab83. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/HRA042093276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f7c1c101382c535b0b0c4fad6b8a67095fc8ee75bf4a4ebdfb9a7f0a7ada95f. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/HRA048357727.
Mozaik Knjiga - Radi Se Jih Spominjamo (Box)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f595ff0d5b1174241a3cc5436c1d1877e2cfb2efb6e6530ea6115edbe6a1e77. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/HRA046707415.
Jubilarni Festival Zabavne Glazbe Split 1980
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa65d47acb6fbbbcc0d9309f4808e4ae0f5a64ffee603cb310d38a5eeda52a62. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/HRA048080710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd958d3b16d0266b0526963c0ccd0874a0ed5b927a98f218ff12d56743829d7f9. 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/HRA047010711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd57f744da8a97f1f47f7393c323440e1a8b282b6858b9397b7910120f4cb5f0. 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/HRA047645353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28b1c9c63d4a55655cfed89c42c4729cfb54c2eb90bb74b6ee79719f1cd2124b. 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/HRA040546439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8e08a52d454fd44f839a34b0f499838cb7f3d9de81ca503ac740181fa85dad6. 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/HRA040546451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd44b8002b2b231dbf281860b51811268ef7f2470a573dc63ed3572de39d1637. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/HRA040546465.
Najljepše Ljubavne Pjesme - Dueti Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e9e064c985ff1758671dc7b6f895fbfae38c7cd0cede2771d1734314484080f. 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/HRA048422543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdf39ca4c219aa3f130ad26f40cc06719f9a1b5624c727ea0a00a313f7e7e60d. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/HRA047674954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d8bd8b6ea760a474edfd53e6f84e4d1d9d1607998955e0c432481bcca63eee5. 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/HRA047783239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7048711700d5f41304e460bc4c8ef5175c00a4bf5aa488ab2560bf72995f4bc4. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/HRA047583104.