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 0xdb10ccd529d42473299dcf2b0479317c92fbfdbd7edde0e918b3541aa3e1e47c. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bd0b43bd-2d19-40d8-9d08-ba93759e340f.json and https://artists.proofprofile.net/proofs/artist/bd0b43bd-2d19-40d8-9d08-ba93759e340f.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 0x3614ceeeaad782dbddb755ae50491621540ff49a1ad0d52822213209bc40d07f. 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/ES09C2300030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x845edd993a4076543b682dc89ea0ba5c79f9171850a4a2fb283eba8278f76eca. 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/ES09C2300029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x547b4a6fa3b1960f59b0b73419f29fce7ac30d3f29e69e901f49d40e6eb85c53. 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/QZHN42586048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf412172b3d39c9fb570695a611a1595ab0155f4cbae1a0a6dd7fd1024fb9ec00. 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/ES09C2400063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61ba2d9fcd63a223589014b2eb67abcf46ca7641d41894fd78cd5e72dd5f8dea. 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/ES09C2400056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c1a9935be765a7cc880089ce07d75ed6fe9da88d2fac72b3bb095ae02b9ecf5. 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/ES09C2400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d26dd06056b261e973b0af1a7f84264956d73436e354c33ba70c8a00ca544cd. 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/ES09C2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12cddfc504b55972650da8a5000473812a417ab9ea33178becdf1b7a91e00e78. 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/ES09C2300025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb925d3a08da8fd8f62cdaaaa035bdb8319d01b984dea4350c15595c67e079620. 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/ES09C2300024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed79512744096d451fafbf95e6d66d48e8ee5a36b18a3e34dd725d02018e1bd8. 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/ES09C2300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf37e8715b1365c5af257f053b9ad166f252a7c7376bdf3d27a1d9cec04459e2. 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/ES09C2300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc17474763f1923659a1cd5c28cc5fe13f15ca272975d8df5b983b8e58e9289f0. 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/ES09C2400064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb925d3a08da8fd8f62cdaaaa035bdb8319d01b984dea4350c15595c67e079620. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/ES09C2300024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf721ba8c002510ce18d1e5e3e8fc271efa632c16b9fd48ba2331789809fe95d1. 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/ES09C2400066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0187997fd53c66800b8e791320c44cb6713d03cb2ee84233b95ff2be1751bc8. 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/ES09C2400068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb762b6ac910533e4f28da4af8c979ff2861f76c412760b60f886a8b180feeeab. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZW9K2472119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd134cc984a3bd8de0938c09d0a186420260f04ebef0b65a919bc0456e9c5564d. 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/QZW9K2472121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x688589ca9f1e3eb60698c560c96af02a8d30fc3abb7315116967ad2e5c35060e. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/QZW9K2472123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7732bb21adc7a278e26af3ca1cb8edff136a1c09334c53b057d5716cb06a2f7e. 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/QZW9K2472126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf5791440b96725d5564b8f066e0389a682349ccf4bebc51f9bac0ff405688d2. 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/QZW9K2472127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbbb391f5a0a238bd797eabbf39b4bedd5cf42ba9877c8d7024766ff0746f4e9. 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/QZW9K2472128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0602b211901e9a7e868cd697382fbbefafa5d69167839adbb64ccf18e17a989f. 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/ES71G2402371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f7cb42b9a9cb933313581ddbc6f3d29369d03b1908e22ccb356f6e4f9a81003. 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/ES71G2402379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x610c216efe1a757b8c7baf10ce7021e5b229aa90d69498b71a0ca272733cee40. 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/ES71G2402376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x975c50cb76f6625ff1f9da4fb538e087c6c08d0c30264452d75117e5f1f671a0. 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/QZW9K2493806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65b12852a1e741a98ae8d51c747cd5f88d285aad899738afb9063657eaf606f5. 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/QZW9K2493807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x161898472aa8ee4599fc304495f274ad857d2234bec95d605f10f58e33a64661. 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/QZW9K2493813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed79512744096d451fafbf95e6d66d48e8ee5a36b18a3e34dd725d02018e1bd8. 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/ES09C2300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06c3d80503d5f2f6fa0c5ece5b383191983d9414da7f147fd2f17d2d5672c7d2. 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/ES71G2335368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6226579a0bda3b4b5e11d45698d2219bbc968d5276bd2eb4af5520d273b906e. 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/QZTVM2482766.