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 0xfb94aaa229c0bc20410a8466c1a135cacad8800e60cdf6901c0a87de60494ea9. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bb964c59-2894-4c57-9b5d-e89aec94a6e4.json and https://artists.proofprofile.net/proofs/artist/bb964c59-2894-4c57-9b5d-e89aec94a6e4.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 0x4f8e674b6c4b06e9c4e76e3218bf8ed1af8e22fe5c0b01e1fdcbdac10156f84e. 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/HRA040643710.
Ostat Će Mlad (Sjećanje Na Krešu Blaževića) (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06ecece594e2c90b8ee90a845165dac1a3bca1355d765610de957526702d836b. 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/HRA370701053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2cc2454813aa4f26274475f3464c71fb1219ddf5292b1571f217b7644fc90b1. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/HRA370701063.
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
Tamburaški Spomenar - 120 Originalnih Hitova
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb16af45f4e046b023d70d01694506a59863a2f1a9eb118be13cd21691b1e461. 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/HRA040632331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb583deb7e3cc4019ad380028d36e8c8714855ccb0dfa6069515ef25c2be90438. 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/HRA041266608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4862bbea5e3ed011e3c749fb44d12afa76e23a1a78af325d34aaf86e664bd91f. 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/HRA049023938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaed09a0e5e76d3baa9a205b994a059d63a538bd27b154515d3f884049958c0b. 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/HRA040636047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eb4f565d4d93e9f8f93b217e73c31b0f46a55030dec2c448a9cb60087c48050. 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/HRA040960597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fb704103ea4fc8a2a967e97d8ae1415e67dd424b8eb48297d8ae03331688eb4. 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/HRA040633906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc04b23343af245a262c2e8bbd64d8a3479acc48d7b0b855edb132f0c86aa5af. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/HRA040629413.
50 Uspješnih Pjesama - Retrospektiva Požeškog Festivala 1969-2019 - Pjevat Će Slavonija
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x116e5c83e5536575ad0519eceea965674e6c8724d54921ebc42c9ba0ae990dd1. 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/HRA040641471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cf8d5d2de71e4027ba3b13f49ee4eb0afcd7e567d1e3ef1f3154f36de298441. 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/HRA040642502.
Brodfest - 15 Godina S Vama - Domovini S Ljubavlju
Glazbeni festival Šokačke Pisme Županja 2024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a8209c433e3667f87c783092847204bb7b8a020e0f49a0e93861adbfa85ddbf. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/HRA042400526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13861d077b5da94c1dc744e1eeae19cdb30f17cf8608e985838ded1e1dfea104. 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/HRA042400527.
20. glazbeni festival “Šokačke pisme” Županja 2025
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc3ccabe34299ba9aa900b0a3b8bff02f7ce0c846f0f63992f1d99b737f0b6b7. 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/HRA042500082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f407a96c45d3ce3d2359c4f4e8f614ffdbdd03a9d077bdb4ba5cb7f0619f9b0. 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/HRA042500090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe9abe11d3949ddb24de17d57b6cb6868e53822c32d3bab1108e03be96375bb5. 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/HRA042500096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x684fda729b251150ac8ce37da8d763328e70b4e9110de77ccb195e412f76da52. 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/HRA041374129.
Šokačke Pisme (17.Glazbeni Festival Županja 2022.)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc69c0ae35e3dcaed7a9b763afeef47d98535903b8d972aa9c73440a3ecedb41f. 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/HRA042201143.
Brodfest 2001., Revija Domoljubne Pjesme
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x898d59af8a861e14adf44e95d81d73d0768c8ff69a85088a73f0234d548c8f51. 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/HRB901501852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7c23ea00ed67f74b6ed25504809fa82ffa7b1c77f9b3bbc599f93add0cd3eec. 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/HRB901501856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6af3628c153db42664f87389708518eb4b57743ef5362f7885a03da93c9477bc. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/HRB901501857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa727f4aca9b2f25cb4e2d6982e35431eb426ab384125a5a0314ca9a455caa8ec. 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/HRB901501858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13cd8d034ca7d45fb18163d1a3b630eb89248fde6f01abe3381e0674ee4457ad. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/HRB901400361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb3c43c854ea5afe4cb947339a6747599a2911d02a9a1c219d483dc2de9af71c. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/HRB901501861.
Tamburaški Memorijal Hrvoja Majića - 15 Godina (2000. - 2014.) Uživo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71a9192e90ab0d040e4931f6762764ff7fd2bf5a4f22a7a6dc7e635cf4bbdd17. 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/HRA041581766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf33af0a3464d31a26de5e0787ef05e636e5b6244483d0e57423a995bc4191aaf. 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/HRA041581800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa466ac52a205db343a84d9e7760bf8722987bed0f0d26af69b881ac62c42888. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/HRA041990239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6fbf8f83e38091bfe2d8494706e474d2da22d2d3674be825eca50d50e4351e6. 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/HRA042093357.