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 0x88d30c0dd49bafdb10ba69b1228c3ddd1dc865262cfb5c73e0c280f2adc547b0. 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/592c9c91-5c87-4fab-8880-4b434855b779.json and https://artists.proofprofile.net/proofs/artist/592c9c91-5c87-4fab-8880-4b434855b779.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 0x0cf0d4f9dfd9b1e33ada4b48b227de8bb8fe63b561b710d0ec7f22b60e572e4b. 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/HRA041063109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x095d02322e0e441a485b4619154db0ff842601525933b9714a1b25c4addcaa68. 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/HRA041787824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb62b8e7bb659ebde3f459c6788032a3cee4b0572050fce3068a7b44610c708fd. 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/HRA041888527.
40 Velikih Hitova: Ljubav Postoji Zbog Nas - Najljepši Dueti
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed77a253cd4c36757155a1aa0d8d9eb08f6981df9e7d0113e579a8190458a906. 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/HRA040243568.
40 Velikih Hitova - Pjesme Za Ples - Pleši Sa Mnom
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f9b04310371f282ba3116e8aec80aed07d96ab450f9dd7d63611ab106edc1ef. 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/HRA041582023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fb9bebc8bae1b61d2603f6b72619a708ad3faaabc88f31c5b42ba0d4e1d8936. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/HRA041888626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaab49197ec13318309b624208c23816708252680273235c239487d3c182e1c6c. 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/HRA041787289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bcbfa63e47160e810d5ea2ecff1c0604c0d25a87b472fd658b42c3a54f69367. 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/HRAA41400138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d4b19cede018f5cb65321996ec139b0e94a0c12f9f5dab8de8aabe73c693809. 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/HRAA41300226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c349b33ccda6afd599dbe72f4057fc881cb7b7bedf4d20cba905d5e102a7f7d. 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/HRA041787290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefe75638d7962e68bcd86cf0c13cb1e44294ce197c4c9e863f174d5493a503c7. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/HRA231000883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49f284a5cc95b892f8888abb087a188b98f6f90658dc095862f677a2917986c9. 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/HRA231000271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06c81b760d116bc12ab9f4a5badcbaeb59d33399d1db4733a37a1e48788bf092. 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/HRA231000265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88eaf9626fdd9af5726612120204bdbdb01ee747c6f7833c2d266366185e2a5a. 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/HRA231000278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8da101e1ff02a824e598651cb57fe035f3e55629f33b8f4eface5f86e27366a. 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/HRA231000266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab98cd023b74e3dd2c1fa2426d8b955c84bca834cf2f73db09516a7c46db0946. 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/HRA231000279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09aaaa2b05501efbfe51465d86a464603bc08f330655b4e1f3ad36dd28625a7e. 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/HRA231000276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b74dfae89d24089a49f7943e6f1e54e1e8a5754ddc0a36e8c0a0b5aeef4f6f9. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:12:28Z), 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/HRA231000275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x502ff951bdd88f868f5c76c8c5293d673a0c2323f103fbc6894c51d207ce8e18. 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/HRA231000269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e111e6f5aaf08a93d1a472d3efb6869fdf00c96a68ac6880f3c2bd758991710. 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/HRA231000270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77f1d56aa0fc018c063eb922da1d174ead36d28d6f6cf0d64b4f42309d928f1a. 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/HRA112363601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4128fd1f65542c657491740906087daeca3bd6b6e58f31076fed1deae218af8. 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/HRA041888617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc609199c28bb263159426542fba18d3830daa8d3a928138a3a3aad7652d08adc. 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/HRA4T1800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0512271ace3e5de975b4d92d44fca2d98147072ae204b3e7616a44228f834e9. 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/HRAA41300073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f612833cc168ff33c33949038ee380d0508a976880cadb43f7b78710b3dcf68. 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/HRAA41700180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc418355d98873a428550468e7d03e9bb457cd6fc8d8aacec8f70b8a840c0d263. 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/HRAA41500131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5179412b635b597c2c7ad77329bbc8a1a73618cbc1790aa0d7440ca113e29eb. 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/HRAA41700362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53dde50c4d261681affb680aaea4bafa8eda57a6cc842954fcd6d63cc9ab09bd. 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/HRA041888526.
Najljepše Ljubavne Pjesme - Dueti Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1698d4b66b1b41211f1cca0c4217153f819f338be50b07e837d6ce192173355c. 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/HRA040706980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cf0d4f9dfd9b1e33ada4b48b227de8bb8fe63b561b710d0ec7f22b60e572e4b. 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/HRA041063109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08c1094673addb3d36da3fb913126cf8bca10aeda74acd5c26efc83dd66f4362. 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/HRA231700030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67682c46802b31827bfc310df8518d37acf1959d3e0ed5fa77ccda608b7a375a. 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/HRA040544585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53dde50c4d261681affb680aaea4bafa8eda57a6cc842954fcd6d63cc9ab09bd. 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/HRA041888526.