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 0x22101d8d2b256f78fd6f590c1bdc5eaa78b4b590cb0a08c0e104c57029245169. 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/49672bbe-65b3-49a1-b741-1465365f510a.json and https://artists.proofprofile.net/proofs/artist/49672bbe-65b3-49a1-b741-1465365f510a.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 0x8083da23901c4a1239a2812d4a35a0833c7db0cc197bd8a643624c664b660861. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/ESA112581495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2117f8ae0bd4974e9b643f4c206c6adfdda53e65d4a21fc75514b22cbe6b8887. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/ESA112581496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5043d71538a8b50ba38cbe6b04fb00665621c8f05fd7d31e3788e933d111bc6. 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/ESA112581498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbce30d38980526c6bbfccc382456736937b192dafbbd2220a9b85b2af66d39d. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/ESA112581500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe69ac09549987a41e98484d74fd50cbf98d6e60d0ee0dfcdb3abe82f998af751. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/ESA112581502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ce654625cf448808f1f5d9582774f6bacccda79d8ebf34c5df70218c03f6444. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/ESA112581504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fa0aa7d331b3a73d410bcd6889ac3b37a9d1ff740ccabfd0a321e90fbb949be. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/ESA112581506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e55f97df6f743bfc3d3d0bcc71832a8ac8f9a638e1636948ae1e145a32f6e75. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/SE9822062523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb77b5afea1f3449c368c805e70da5bfa00170ae11732e571142865fd53206609. 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/SE9822062524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa14555157522afcd7ec6502f075667e0292fc6d933016498d00cb4104ab91fea. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/SE9822062528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f32c14f16a9b4b4bafb3bf61e54b41c97816f87ae8d34a5290336c762d5857f. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/SE9822062531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9116298ad79d2a0adf429f69c237fef9a8c0a6b4fb08e6b11159f9c4c767dd4e. 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/SE9822062534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb7990589c72a6dc034b52b01e3d0422f78a42d51db49d5bd9b2cd936afc137d. 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/SE9822062488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefcab04a60a4266b32f1421f5c2bbe5b483b8c8ab91f18ee0eff8d9bf69a9674. 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/SE9822062491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae212d4a72f1faa0e26f6fe8622209698217cdc9d00eafae2d7fe7db64901f5e. 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/SE9822062493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9be7c04d08aafed21fade75d9a6af984e5ded7e8c85f8624fab2375c02070a17. 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/ESA112581521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcf05d11eb4bd291c0405f7a5b8e074c6153ae8588e18d531bb3612f50409a05. 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/ESA112581525.
La Caraqueña / La Entreriana / Tarijeñita / La Abajeña
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fa04007c845298ba6cabb4f166f8a0fc3405687a07a2b6309c18ac88b802bb0. 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/ESA112581529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50abcda21e7b3adfba5b8403fa186bae4a19d1fdc2a57cb1031167923725f31b. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/ESA112581533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x718646c8b6e73fb5f14a439cd8b4a9739672a1285d90a8f76f9d2ef5222df901. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/SE9822062513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x297dde8a47b30d332c314fc6007f603be5ae5f2176ea89b1f0200dd4fb482059. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:54:28Z), 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/SE9822062519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11b8393d70e4dc72d0da422f612f73dbe0c761dff70aa0fb1b3274512f620f9f. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T05:55:47Z), 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/QM4TW1738323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85b5cbab5b93357dd324bf4ee5f6f2e94379e14d30fd375217ddfd917a17dce9. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/QM4TW1738327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x026691ad3b42627437f2c1b30e0f0cac7ed8d467ff8070d638b3ae3a6746352e. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/SE9822062501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4746dc0df8d683634c5ece87acb7e43229b17184262da4c447e9d659cfcfa3e. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/SE9822062502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd70d017061c5b52075ef8353d05f5ab138f30326c94f096f256814df8616eeb2. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/SE9822062503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab1896157726d3a20a18c5ce636751961643c61507b09ddeca72bc0383393c72. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:34:39Z), 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/SE9822062507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c4013d94a80bfbaa569214bd34f1bcb7a9ab4d4e009236e353de75849970a3c. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/ES71G1850585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc59ef857f945858c6c3462825452369c1ea3051a4cad4888019a1782d49ad2f0. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/ES71G1850586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc358174f381e989d6d6226edee8b6058ae4459e3764001f43bc258caedd3c1fa. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T09:59:29Z), 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/ES71G1850587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb245faa5f32de268b2f6ac92007619ee21b34b30bb867392f00e552938c07b5a. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/ES71G1850589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x021389cbc47702595997705a0968224c5bb45c2b45ba12b4debe790f7e0b9f4f. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:56:04Z), 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/ES71G1850593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47a5f6194e08db2adf58a56a5cbdfedc60da5af4690278ae101d22c478e4f982. 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/ES71G1850594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x990fe63aac67b00564ecb6e07636631933e027790007a77ffe34925b49764f3c. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/USHM92205365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d7698bcf04d6ac77128afcdb38a4de80621ad51505032b1865ee880dc5a403e. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/USHM82281731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd772f269fe48650341636f2e1f5f0a7a59facd69b42a03c9d450009ed6fd1046. 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/USDY42448443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5584c28156254ec48c7ee16acb381146f9bf6a08852e88768bd60a1e6047e863. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T17:51:25Z), 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/USDY42471948.