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 0x422110cdc8c9b56dc92111694962565a46bc87e9d56f76edd08eb4f4b7b43a19. 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/6d82af88-6c48-459d-bfd7-c445d5a4342f.json and https://artists.proofprofile.net/proofs/artist/6d82af88-6c48-459d-bfd7-c445d5a4342f.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 0xf58dac7bc9a34b5f698ea3dea937191d052ec28ad7cf075433e4c31117199be0. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/QZK6Q2176809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb26118a878343ea038dc37090405e9991429bc4b9a5e135170483c3995fb5ffe. 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/QZK6Q2176813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x010df196bfce20e5da177ad9730abd2a89f998f02a6611650ebd8700acbd85fa. 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/QZK6Q2176814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a0cc92a3fb0127cc7a5c949743e30abc08e29ce92684fcf66c6892579891d30. 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/QZK6Q2176815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2619c1df3a7ac3bceb82e0459a814de5a42c7f9fdf46c86a425e5f57cab3972. 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/QZNWV2277265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fe54be893ec855dad86d86fbcdc7a9050fd048ec4e7df273212670e90822251. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZNWV2277266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x656d25f4e47ba83697eb23bd467b992217da40ef9ac362f57dd6383fc3183ee2. 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/QZNWV2277267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3a13a0ee7036e7de27f11693d485915c96971e729eb8fce7024501df2ad1bb0. 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/QZNWV2277268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef1a76359f9337e52cca001aa08e437a34305cabeaf94853a2fb2daf848cac1f. 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/QZNWW2244061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42c1e72ed95f9af3bd3de9101ad44c347c668563df19b179c0fc8996dcbcb68f. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/QZNWW2244062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b96a35179f824149513531759fdaee29d64781047c9a7074bd2be91b53f91f8. 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/QZNWW2244063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7482463a9ccfe8ac87a2a527613e3fe0e30fcf60d12dcd842524b8b7c0ab53cb. 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/QZNWW2244064.
Daniel Quispe Lozano/El Manto de la Unción
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd7081ffef15b71b33516881a64660dcf0a2049dafdea9a4ad34015289804309. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:26:02Z), 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/QZTB72292064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf653f459ad79f4bfe3a129f72e35eba07d08b6c4944fa6d3125b0107286e45dc. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZTB72292065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e497bfce0ce07bdd2c98aac177bb0a883084627f4a5cc6c59cefcb31b939893. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZTB72292068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x693f46fe1e7f84ae68af65ef32c156c33a8a2dbe91c712d7abae5853627719b8. Chain 2 (Bitcoin): anchored in block 958668 (2026-07-19T05:16:11Z), 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/QZTB72292069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74d5f14b09cbddbac3330baf5fa65de4f667574236e8344008807c957ab15274. 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/QZDA52345018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2310ae3a2edcb572f100928a42cd2adb8eceaf3f66c1a7418ed7c5aa9e85690. 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/QZDA52345019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9650d698c19e86b00b2f35c1b3e14db2e769d4b9b1bfd5ffbc1f0aef9c5835d9. 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/QZHNC2436177.