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 0xd507214949b6df7eaeab7da6f281e17b6b0dde6f9651ed13d4ac8ca877854c70. 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/e1481ee8-d960-4434-94cb-88a8a7735d0b.json and https://artists.proofprofile.net/proofs/artist/e1481ee8-d960-4434-94cb-88a8a7735d0b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
DKCB i BRANKO KOCKICA (Pesme sa festivala Dečje beogradsko proleće)
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 0xfee2c6afe71a61efb4f4dbfe42d622b13bfea94702c85a79720c460128ad4fce. Chain 2 (Bitcoin): anchored in block 957711 (2026-07-12T13:56:57Z), 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/TCAIG2467082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8008ecef009676963bade4b0f5be3ead3501d1c51daf220b7bece4e3223eb6d1. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:43:12Z), 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/TCAIG2467087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd624f813d326211c6a613da07f06266bd863d1fc0cce4bb960b7e8580be68fb2. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/TCAIG2467091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe74a084c9f580d5fe62b9225b174581e817cd3185f4fdec36ea9b79e966d0e21. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/TCAIG2467105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18eaa46a6a294b9eb4eb6b76f6ade64ca859b5fa8c8b942317fa0cbad694a05e. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T03:52:57Z), 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/TCAIG2467134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1fda07f731e03d4ad0143f41f5e27b8e1747f9c408c01c6439a86ba0f26d77f. 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/TCAIG2467137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5e1cec0b816d921061bc1dd565791015e19e941fd5c4ef8c82f4588cdc6c8c6. 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/TCAIG2467166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x875642ae0c70536292755210a065ed512d68dd1077ffe3e3b399cc634c5f5c24. 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/TCAIG2467181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc42d51c139c7afb5c3c49b2f25da47c8d79fc4cafed584e466e45feade644d14. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:09:56Z), 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/TCAIG2467187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfce1634b2a73c3f1c48da855618fa3ad7baa17276be1c6ed326935ce91f2144e. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:47:24Z), 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/TCAIG2467229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26e87a6a069c80f19d528db4e8489b13e08d9c644f097ce833b355e2494680a5. 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/TCAIG2467243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a6120bd492729389f95f23dca05e30cc119fec8b64ebaaffbadc8153a4d415a. 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/TCAIG2467258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcc94f8dbe6d6e9a9d2e4a0a5b89f20e175c204a77539e64c9655ac3fe61441a. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/TCAIG2467275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60c154b2fe0abc3d3b214add1039198e2f53e2896c292917e50b7a5f8b0ab950. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/TCAIG2467343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfee2c6afe71a61efb4f4dbfe42d622b13bfea94702c85a79720c460128ad4fce. 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/TCAIG2467082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd281211ea918164b691e832ff5fff159814fcbbcfb3fbff6859e52e72932e409. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:10:27Z), 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/TCAIG2467097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe74a084c9f580d5fe62b9225b174581e817cd3185f4fdec36ea9b79e966d0e21. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/TCAIG2467105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2944e07425ede9257f29c50be2c46d6e4f0732474e1898553a4a48a8c1577de9. Chain 2 (Bitcoin): anchored in block 958865 (2026-07-20T13:09:39Z), 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/TCAIH2467151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfce1634b2a73c3f1c48da855618fa3ad7baa17276be1c6ed326935ce91f2144e. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T08:34:17Z), 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/TCAIG2467229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26e87a6a069c80f19d528db4e8489b13e08d9c644f097ce833b355e2494680a5. 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/TCAIG2467243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60c154b2fe0abc3d3b214add1039198e2f53e2896c292917e50b7a5f8b0ab950. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/TCAIG2467343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3256946e0f6e38ee2a43f4f50ab38ac927d03ca33beac38d4b8e606225f4b907. 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/TCAIG2467351.