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 0x2dfbff76b376295fb284e9bbecdfa606664beaedab2c0764449a71420f75085c. 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/ba09ec76-1b97-414b-ae97-eb543ff28301.json and https://artists.proofprofile.net/proofs/artist/ba09ec76-1b97-414b-ae97-eb543ff28301.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Children Original Children's Music Composed and Performed by Mariana Mallol in Spanish
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 0x7116f394de141a630d2a3d98b93207b28e3559eb2c0972f54c80c14649be062e. 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/MXF430400175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69420cd770d000263241d5a640260b6441c00eef44a2853a97a79754ef660d92. 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/MXF430400182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25f3666244f506f2b79f143d315b461cad516ab84b0ede45787e9c861e3e140b. 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/MXF430400184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bac54f8174fcd2ab970bce594a7feaa60633501f757988a87b0518e1da857d7. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/MXF430400185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a0fa125320a418c62c5e6483a600f6bed6d4ed82f679d35dd2076674973d2ef. 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/MXD781701047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcae40d67b68158d84f096fc347f68d5f486830e29b40643bb5ba765b2c1d55b3. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/MXD781701048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7160f3f57e94a110d75c858aae7b39a2551a33f97ac6ebae6f266f71f28af3eb. 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/MXD781701051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa69601f4dbb3c6e0d47a5934088f9520ba44e1e278ef8f0c9eb2c837aeb0f47e. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:47:39Z), 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/MXUM72008805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a422e667c20d75270ca19fcfd56a7e4ede0b5a664d1d3e2bddd54be5601d8f0. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/MXUM72102725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca697a534e39a7230aff706a44d1881dcf2f4112a210e0bc62ad97e17c62339d. Chain 2 (Bitcoin): anchored in block 958654 (2026-07-19T03:55:30Z), 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/MXUM72102726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4080156a6481c13283918b50a21ddcdfa195a3160c8ee55bed18a6e0c7bcdcd. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T01:47:33Z), 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/MXUM72102729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf204ebeda91512275c90efb40eebcc21950d008af2f2ed72abc82d1b7946bb97. 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/MXUM72102730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc474bd7e0c697c5a9f8527eeb1de51729d0157dc7783c4f640edd5e2b6cdf4c8. 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/MXUM72102731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8edad1ac916580a4f63b27b1a6241d836e7a35b3535fb7fa672d422b656fe0c. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/MXUM72200401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97e42a56871e0dfe5fea6d7a8f51c0442c6e2028ebd134b05c288a955bed00ad. Chain 2 (Bitcoin): anchored in block 958689 (2026-07-19T07:11:11Z), 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/MXUM72200402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2b344e07fd19efd6abe7226a36ff03cfda852871335005eff34c6085414bbf9. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/MXUM72201616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4d95a8fce02f5ddf2e0ea621958fcbcc74767bf19c2fbe71d0be4e3d3b4f015. Chain 2 (Bitcoin): anchored in block 958351 (2026-07-17T02:38:05Z), 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/MXUM72201609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35f8ce31a7d038ffbff05a1d270c85473086c5aa01b123facc8297aa2b412e1c. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/MXUM72300299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4093c8723a1b286b26a94f1d1e5aa74f4fa210fa30ff9ecd273b0515d549966e. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/MXUM72201617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a36f51520637a134956cbad20f58cb94b8e8ab359db2228ecbc884e5afbbf47. 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/MXUM72201613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbed861c81da54c27893bdf698d1b37b6df777e81496ca624567305e939ba8f42. 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/MXUM72201611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd84b1ed06c9d2aa7ecd15220d09c0dae3def4a4d82f18a92d6d8753aea2daf66. 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/MXUM72201615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9754e41ff18e929f29acd386b5143ba98cb4b645962f95120bf867cd94903694. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-17T00:54:03Z), 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/MXUM72201614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6bf5a4d81134fbc919be3a3d9f1d8e85cc1d384d5291f6080e1715b9fc66d29. 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/MXUM72200594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35f8ce31a7d038ffbff05a1d270c85473086c5aa01b123facc8297aa2b412e1c. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/MXUM72300299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59f89488d6bd1b062c02514a8ae7e9c93b1b5fcbb453ad0fbc23badf35a70f6b. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/MXUM72201619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61a78595496fb8927301541139dc2edbc217dd79bad67e7fa7eaa6f25d7286d5. 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/MXUM72403216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0a1cbdb6c438b7da14a6f6f318fb92074d47aefce4067555466e2905e82a8c8. 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/MXUM72501071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa721e001075571eae414a28c892fcabab564b856170bd3f374e7e5c186a73b30. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/MXUM72501859.