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 0xf0ff321e9740926ba364c35a7e08c6f5aab8c751a304a7c3f8bb78193c43ee55. 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/4e93810c-906f-41be-9d3b-57d4995a6438.json and https://artists.proofprofile.net/proofs/artist/4e93810c-906f-41be-9d3b-57d4995a6438.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 0x9a3715189a76e67a1f7c5a92f8d29276e4e5d1b274d2622ebe891ba63d9ba7a6. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QMPKX1520821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf40d212f0bf1d1dbf3fcf8fa663a366121d90821f304bd2af36fe16adc4cb7b5. 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/QMPKX1520822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbd18274e7ce7f6a6b869b432132d91216bc028e5f92f4080ea569ddf7a63d9a. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/QMPKX1520824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa268ab44ad7a7f1af56e0ce2ee34013cb3edff619ae526b88a15b3367e64853. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QMPKX1520825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d06400121d87835ea4b398654e096e3d2a01a417e3362465e318ba6348e7e54. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QMPKX1524313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dcd57359c973115f324e2383d5447b200b2281ca11d914beb9ee070501f0eb4. 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/QM2PV1648992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1799b02a55dad800a5f2ff6d506839ddf668587c4c535272be0c99fd48901bc. 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/QM2PV1648993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eb3d0921684fb75f9a4614134649bff254fc2346d18dd604f286e851dbe0918. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T03:41:20Z), 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/QM2PV1648995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfca486ed3d08397bcf729709cbbd6c24cd7ea6dde5895c76de96ceb6925b811d. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/QM2PV1648996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf606a91cc775034e7be38f19202791d97219829ef6380173c961b3864e7a29d0. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), 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/QM2PV1648997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce62c33c9f55f32db14c8aaac089579f7a17f3e5a4e235064c10c3bd0e53f897. 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/QM2PV1648999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1366170289083b97e6e90abf1897225d45e53db807995a071f85cb51fa8aa2d. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QM2PV1648975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02196d372624ec963a1e9e46abc899fbeb236c072da1c250ecf36e5b06842238. 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/QM2PV1648977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ac5e8f651a0bb37c75fcce7337b8eabe071fb7cc1394a137826c15723492724. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QM2PV1648978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22d97cfbcb0e8391590e4f84e958642db4583ea6e54b73d63263eff8fc5f5d78. 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/QM2PV1747207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf76a45fc2a78502160471b530fa4c760c6e4399a9415da0f1e0ce5a3f2b60d0. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZ9Y21779444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32cf6a4f5f737ae74c188233ab417e31c7098c951f436712fbb3a8441632f160. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T03:59:14Z), 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/QZ9Y21779445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9916c8ced6ea471f643d3a9b51d859978aa6271082c8a6d93a55c4790a9c526f. 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/QZ9Y21779446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95712423b73a9f689271af4a0301825dcd2e7680af743d9964eb0fa8ffa6cf22. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZ9Y21779448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e0f437ef23be0aeff4d805f3d1ad869c66fd5a29197e6229b66b3b86dafd6dd. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/QZ9Y21779449.
Los Ruferos de Dallas & Carrera Potosina
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51ad00dff7cab6bb12261802928b60c7225db45f37fb12cbe2e04dbf6c0948f3. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZDA61860599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e80566abfba4d6822d67cad29e9292563824b0317e49272bda616a8b403c0bd. 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/QZFYX2067388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d4acb0e6f8adecad3a35f4b2c355b8d7ab870c3ea586b0c98e9a4e77b51ac2d. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZFYX2067390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34219062cff71fb12beb40d2951c02dc59b624110fcbc2543bf7a221ee7dd85d. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/QZFYX2067391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60135b52e9126a256b6273de211892c652527aa3ac2ad1e47af79f421d0ab196. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZFYX2067393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c965a87a260dd6d5f07630dffc00df45a61749c43e657e991bf0ad0164538fe. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/QZFYX2067394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc73758b1255126b264e50ed6ed263d70cd2ba52a16fb76f15f9095e0a3942317. 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/QZN882406849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x539de14fde4014799e20b422fe4efc45fbd6a89ec7b16c126bfe09462b47cf45. 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/USCGH2296531.