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 0x162a3ab939ec87d7472beb9ac6e3288e26cee65cb0c52acedf7128f5585b18a9. 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/89ee3844-af47-4fdd-a214-c792d6183993.json and https://artists.proofprofile.net/proofs/artist/89ee3844-af47-4fdd-a214-c792d6183993.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 0xa8916a577dca3a9f2dfaff7f821e6be8aa13e3d0d0c9b919a2f452e7ad4d1100. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:24:03Z), 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/MXF367218458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7435df9c2d2e0f28ab39e47f15b9910fb71ad2a1211cf26e8d911a1658cd9fd. Chain 2 (Bitcoin): anchored in block 958691 (2026-07-19T07:19:31Z), 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/MXF366510454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6df13c8d6da145829fc6493a554c9ad1b35bad04c37788c9ba3ed41390d56bc7. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/MXF366510427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5defb74816fae1da517cf8db9d7cfe01fd7691a8be1241949e20579e40656c24. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/MXF366510424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5d1315184ef15f70834a1c82288eeeb8d10054ebd078cfd052cb34d6cfccfe7. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/MXF366510453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf158db93d238089fdeaba66b88abbd65dacfc176e2a923218d0f409248d4618. 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/MXF366510455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3e91d6868662d5750aff8aabe8c02cd4fc58e19b2998f82dbbeef9b9657243d. 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/MXF366510425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5a335d51b61648c534f65a2afbecca5704cdb8efd48371aa7c15c1701fa7b8c. 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/MXF366510456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x195961105cfb64e378888d96da196e96e1eee00c4411a918b0cc969caf5c0290. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/MXF366510458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7393c3cfd33f72772d4d0855d78f553005a80925b83591e1c990b71548e24f6f. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:00:13Z), 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/MXF366006436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x000552c7bdb3fce7d169cdebe6652c7834fd76a26db8d4c3de7e859ec9aa9b9c. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/MXF366006508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x705d096d7e33cbea9111981b6691086cd2c75b049edceb6e8d32e011877cdf4a. 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/MXF366006433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe65a971f5b694bc2733ee039137ac26a2c0eee5d58febeaf9849bbca18a9fc86. 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/MXF366308648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06bad836a0b4c88b07949ff6f0ba32f657181cb63d0589c6d1b0e2963b9b8fa2. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/MXF366308644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa216a34a88ce3276904bbd0f59c263145641fd8da5ae2476f983f4fde9312335. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/MXF366510617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e7585637715caeb9564f4bcdd9f7baa67d5cec7576d529cf4727ea753d28d65. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:17:56Z), 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/MXF365401969.
Colección de Oro del Folklore Mexicano Vol. 2 la Zandunga
Colección De Oro: Del Folklore Mexicano, Vol. 2 – La Zandunga
Colección De Oro, Vol. 2: Sueño Imposible
Marimba Chiapas-Los Mejores Valses En Marimba
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18666c5d54f24cc73454974e8a6df156327ecedefebb17f1a1fc69e63b811497. Chain 2 (Bitcoin): anchored in block 958911 (2026-07-20T16:46:31Z), 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/MXF366107495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9858bddc02b8c0e30e50392bc23fb1324c83b264605e28e0bd0a2c61f338ff30. 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/QMDA71405370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa73430d12ffc7df894759bf09aaf829fcb7d43206877a089f074325c80eef733. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:15:31Z), 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/MXF365502860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6e9721bb7aad5ae3e79a80412686e21b6c33e42443f549b1ac40b4dcf1fbb95. 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/QM6DC1699511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2be0baa25633ec47a8989bba385c75e8f2788c696059d46f7f3d87369c1d05e8. 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/QM6DC1699512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3ced160785a69ff2d9a5bb77563c8fca5047a5ace9a9e3f01b07f7a022854ee. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/QM6DC1699513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ce1fb17e2b23fa1e812e5e0ec83ae32723ea08cd91f1c6ff0669528f2bd7b35. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:07:31Z), 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/MXF550702532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd886551ca1e884d0a9e37fc4b79fdaa943931b3477737a6d277b3794562a5914. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T05:03:25Z), 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/MXF550702539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4caff15457ad11c7c1d5ed736e2a42fc64a5e84d2971bb6bf56bd213a37c64c. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:37:25Z), 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/MXF550702540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdec2ab15fd2e010da0dee2dfad1819af03cd7309518d7f204c7c073d5dd30402. 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/CA5KR2091359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0497357c8aa99a4066f0b6991b5b83c148274d0b1fe009399e8c08936439713d. 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/CA5KR2091360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5e0d27d9943349a604500b8762cce5d385898a7bbc3f7b09c81b93d944f5343. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T15:35:54Z), 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/CA5KR2091361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10937625625901c54d547a8134cb737d1565a3b8fd36809ce184ba0cd2b22d2b. 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/CA5KR2091363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e81ed0fd3970dbc80cf83b69f0bcff4d66d2d3535c1d68da1b8ca5145fedc16. 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/CA5KR2146603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x101868978b7c961524d9d303d9df3b41590cd6755e055a603716224cf72b3e0b. 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/CA5KR2155366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97817c740ead2891ba0027295798f521e7f5c3e5c22939a248a4a0f0a7ee6c05. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/CA5KR2155367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad0a7f10a7462fa6ecbf6614db3f6cca465143df664235363bbab6a2ca8ed187. 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/CA5KR2155371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75e34ad3fa01a5f877bd80d7c40ea0b856daf5d27e148c0e0f68c39f162d3e8f. Chain 2 (Bitcoin): anchored in block 957892 (2026-07-13T18:21:16Z), 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/CA5KR2155373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf10573033083dcbee3eb9592d0f6d42a7d90a8bf4d71defae737c3f4cdb0e030. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/CA5KR2155377.
Popurris De Las Grandes Cumbias Tropicales
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bdd3842fedd1b758adbe67b32c745b83bd10af8ce792a54b09c2f6dbb57012d. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T09:56:37Z), 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/CA5KR2327909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd08f97334f7042695bac36b9ac86c6230223470f05025b9b1cd3ed772864be6c. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/CA5KR2332986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22cb4927aa6f0edeffa2547ea97512854fd394a268970514f3944b1dcf60e933. 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/MXF550702529.