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 0xf15a037133f884cbc663904d1cbe8b7285bf75fd18a872db85a77f581f002237. 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/f833bb36-7e7f-4077-ab14-d39b725b6b2e.json and https://artists.proofprofile.net/proofs/artist/f833bb36-7e7f-4077-ab14-d39b725b6b2e.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 0x2faa6c081298a2261af0fea1216140b59dc8fb849925595cbb712b8c03086f9d. Chain 2 (Bitcoin): anchored in block 958571 (2026-07-18T15:39:25Z), 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/HRA048921558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8a24b6ed7206b2e2bafd559fad86ee735c6d244b1de7e5584026c8c45121859. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/HRA109308604.
Jedan od onih zivota (Muzika iz istoimenog romana)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x588922bb9686003b6a17a3d1991b240c48f9aef3dcd6c26a8d0f549705057914. Chain 2 (Bitcoin): anchored in block 957620 (2026-07-11T22:32:56Z), 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/HRA100008633.
Ostaće okrugli trag na mestu šatre (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeae253d69cc3e66fcd12d25b761909cae1045342c61869a2b328dab2964c4b6e. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/HRA100208647.
Čovek za kog se udala Buba Erdeljan - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6bc6ead7d1e34d039f63b720fdcaa2f0457b57ab7ed8c07a7c399c198a7c287. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/HRA100208648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x708a8860fed25db734f463db7f0f9393868d9b9eadc0a057edf295121d2709e1. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/HRA100208649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd6fd588b36b6697cd2be28afb24720c58ada1480bda703657d230051768630d. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/HRA100208651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4454cd19a169618a9ea0fd271f8d216318fe5cc50181fc83b7cfb192535e3eb9. Chain 2 (Bitcoin): anchored in block 957629 (2026-07-11T23:44:46Z), 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/HRA100208656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68bd2a3031d0aaab6472f88d05879787fa2580f651527831f89b4e948a7ec822. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/HRA100208657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70afbde971dba6a24addde9222e83e24ebf9fbaee8920dd44bdad90b550516d5. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/HRA100208660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec71ea64de51b7d1d6cfb23fef00e6d395b83d2767ae95cfb59cca5b20005d99. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/HRA100208661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6352bded961c1f590103574a1aa91499e145119c03c47d475873025462a842d0. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/HRA100208662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f70f808b2386cf17b9b0cceb04d7f03ed9e399ebddf0180a860afcfbd3e0b21. Chain 2 (Bitcoin): anchored in block 957629 (2026-07-11T23:44:46Z), 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/HRA100208663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1ce134fa0173743f54ce5e4981700eda170bfb7631789bd99906e378b1e0f65. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/HRA100208665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6bcd8b3afee05afe991355d1b8d1d1980cbf9ed9de101a9f7cbce59cab83dce. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/HRA100208666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25aea8ad1d527746899b8bc090d6581d46e499633b9cba00f459464c106574e3. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T20:03:27Z), 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/HRA100208668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16833f3ca20c7d966ae9b8cc62495288a78a331ea614a37534aea84ed364f21b. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/HRA100208669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x808f8a43840752d780655bb4f63e30df87d821e19390ccf291da207d169af331. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/HRA100208671.
Rani mraz (Muzika iz nesnimljenog filma)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dbb4bdaf38b69387b06e8971fce3e8f6b7bef99db62ec327acaa4f732e8b131. 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/HRA049820053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd8236494aebf3fdaa8aa6b39e3ee92c5542cc1396da14877db13fffe109933f. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/HRA101208810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e0c8fdcbed9593f75be0ca34ae0426f3f6c4b2c8fb09052e944a69a27be506e. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/HRA048605444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf16c84c0c7ba84b63efa2acb11ef09f88a80fe99e22b46a3b19627d357e32474. Chain 2 (Bitcoin): anchored in block 957622 (2026-07-11T22:55:42Z), 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/HRA048605446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fbe5d5fb6b442e25f608ecc178dc67c9a25ed816dd2a198092adf5b4ed2744c. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/HRA048820054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24513d63d1f75785993da23a16044bd5fde50e62a86a16000cfdd97766a53dc3. Chain 2 (Bitcoin): anchored in block 959054 (2026-07-21T20:19:31Z), 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/HRA048820051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68e070f08440f8eddafcac5859453825e105522f0f739d3292a52c6cc854ede9. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/HRA048605452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2faa6c081298a2261af0fea1216140b59dc8fb849925595cbb712b8c03086f9d. 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/HRA048921558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09bfd85adc3c51b504a2f49c491df465c273fe57175ff7015d2bf602f3cc13bb. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/HRA048605448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc26436e48add82bae47041e4a4ed82e76dc50569e9e25ee91c37f2e8a9da87ac. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/HRA048820052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x094c0ae2a5248e0da03eb11707c6a9116da243bdd1492b681b8113b70e2c301e. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/HRA101708693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x619f2a14b8f7b537101377e9b26d8ee9d34f79c124f48ee5502fe9e7ab269617. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/HRA101708689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa11c2178cd12733866521972fe9fe34dfac34e09401d90f62cc1a8c023a256dd. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/HRA102209842.
Dani Jugoslavenske Zabavne Muzike Jrt - Opatija '78
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba0c7dbc1cbc69471cba63f5afbc626b5d94e794b5159bc175cc547377f7c669. 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/HRA047850527.
40 Velikih Hitova Tulum Za Dušu - Evo Noći, Evo Ludila
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2faa6c081298a2261af0fea1216140b59dc8fb849925595cbb712b8c03086f9d. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/HRA048921558.
24. Festival Zabavne Glazbe Zagreb '78 - Večer Slobodnih Formi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e9a6e159d30e2f3172d724e0a9ee42f2a9477279e2da187f3ecf1248d148698. 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/HRA047856727.