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 0xf732f9634c1705d0e88aecbe9c384175c36b0078092c6f87b75d6b2c02f5fe2e. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c6cbfe8d-ebf3-4851-9e92-75f9a3cf0fd1.json and https://artists.proofprofile.net/proofs/artist/c6cbfe8d-ebf3-4851-9e92-75f9a3cf0fd1.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 0xecd6abfd60fe569702945c4e7428d83af29e4695c5da3a9c175aad2ab71b95ab. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:57:54Z), 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/HRA048918372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffda4c7d4c2f356a9d4e727d1ad134d801a49a2a617b452768004e7eee13ed20. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T06:31:42Z), 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/HRA048918373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f90c9584fa2fd61bda82d1133c4d5a33f49988fcdba4c3bb3dcc94b1d189be6. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/HRA049938359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fd6b8074d94af4fad8605316b7092521724313199728e47db5921a82d73b196. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/HRA049440809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4be8b4ec18fb0bfb1a9397cdc97806a5212cd0b83321f9b804be9e6e7abbfcfc. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:29:05Z), 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/HRA048818376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd20f2a2492a5e17d680b72e630de9f322808d436440a72b050df84006b55fc4e. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/HRA049227127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x675db95430587b9cd94a28a44098fa9d5b26b601430274bab818542e9d75dbb0. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/HRA049024026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a2950087e752e29120edcdbd52ced2125fb2c45634e699bfed0df77b9081ef2. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/HRA048919797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x650cc80e5d50981000a54da4a6c8350f143c26df8987fd0e0cc8e38b5c7a787f. 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/HRA049024030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e23026c8d72838f6502e63201b98c8295805bb190ea7a951ecbd2ec34b68ae1. 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/HRA049227118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x885d0438cff4ce7f011b904a4115ed28f146f9c823e3e1fdee95c821afddacd3. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/HRA049227120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74d2f987c5b92e4edce338c36ae9e3c804bb47633074ac6bde771dc3e3d0e93e. 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/HRA049227124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdda4cc76848109df9bf479f63b517711c1c957c17f56e9329e7c6bb3d21cd23e. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:16:09Z), 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/HRA049227119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cfebc22c6f7a8221ec63075a79799a7dfb127f67605435c0d081240d5560b3e. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/HRA049024028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x690b9e165709c7c6e4aaed15f71e609d83b80eb891cd2aee17e1f9acb8f3c72b. Chain 2 (Bitcoin): anchored in block 958658 (2026-07-19T04:09:09Z), 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/HRA048919810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b9b2b9c06c6320124378b38809120efd67bad437fc213ee886dbbddab2fd121. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/HRA049437114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb10c038d71429bc119daeed8ff686f8a223fa981374c9f983764dadc2a2aeb3. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:43:55Z), 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/HRA049532699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0bd8c2d0db03e616e8cc16009d7d9173a9fb1c9ee0d254951a7c2035347f934. 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/HRA049431169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68297203f125614878b6d62eb10433779846402c810fbecafa5db9e6f16aa7ff. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T15:17:28Z), 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/HRA049532695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc93241a42f1c2dda224fa1970c18c2f5464c038a92b8f0309a2fcee63ebe8aef. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:49:07Z), 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/HRA040632697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabb5902de9f09d87c122d92d5b0bdf6c827a5c6f6258de4fd7da4b7c8fa89185. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:23:30Z), 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/HRA049532704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f576d93eb2062388991bb345ec7cef71f45bfde71aead624a522b3e92940701. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:23:46Z), 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/HRA040959772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdd17a7e29cc3f5c2e1ae5259d846e84f602239d309674d18bef6bf411909f90. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/HRA101205238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92dc98a90defc2a4b5c55757c8429f63879aa9f84588d175783ee9962f017fa6. 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/HRA041787598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7831d7166145961f6bb6b0fc3b9cee2744aaacbc4eba80e4771b8bcb85bc71e8. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/HRA041787601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f9b68e83c096a6fd5dfa6e32197e4dc554b63933417ff6c89234214d2cf4e2a. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/HRA041787602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84050145e61aa5ca9383d24bf82766faecf84dd93009394c00ec3e493a3ce1cd. Chain 2 (Bitcoin): anchored in block 959003 (2026-07-21T14:39:46Z), 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/HRA041990638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c9fa9561ef4fb4b3186b49c588939d3a66fe8b20563d75b31d94fce080aa84d. 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/HRA042198837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d85a4aac44e94d57f80fe767ab97d0bb00c5699c5d5e7dbb7b947232adb7f5f. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/HRA042198838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed3797dbaeb329af6e348be28ad5fe28e6550f65eef91497904911b04f9bcd7e. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/HRA041992025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77c90c43757c77624295ae2c9350810a0f16fc0ab1b3b9af2f3a797e33b1c2b0. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/HRA042400622.
40 Velikih Hitova: Ljubav Postoji Zbog Nas - Najljepši Dueti
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e9e064c985ff1758671dc7b6f895fbfae38c7cd0cede2771d1734314484080f. 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/HRA048422543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea61e8fa8bc2292535278becd5e3f52a988787f3aea20bd8a80acd07f2787940. 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/HRA101205237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d9941e165bad4ce2bd5abe8c746ae6795c8e77a041ebd7747293f87445c969c. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/HRA041787603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf859edc73fb4f3e1b14ae4ee38ccf358d19d28156838e36b2a7ee5485f78a223. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/HRA041372232.
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