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 0x532a0378095ab576b67ace7156970e2aa09b79a1200cbff4c1f07992bcfc693d. 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/3f3a31ce-cb41-4133-81a8-cb99dd78457a.json and https://artists.proofprofile.net/proofs/artist/3f3a31ce-cb41-4133-81a8-cb99dd78457a.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 0xc45a7aa8c89b817a9e5e5a2e563b3df480a4b4bc9030554a3d48252b7b30778f. 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/UKR6V2341616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeeff4c3bf7de0b64080acfbbbe5196337370d5b8b0770c4bcb7ce9b0368b9d0. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:42:52Z), 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/UKR6V2341621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb5d03ce08b59345ffbb0298209140224b80f3bbf8a349a5c23e1d49af3018f3. Chain 2 (Bitcoin): anchored in block 958696 (2026-07-19T07:45:31Z), 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/UKR6V2341626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d084fceb80b584d086d6f554e9d9c62760dde13b8cdfe5c0373981bacb310a0. 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/AUGBT2491136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3463e04c6356069880b0b2b896c145d9f02a72c046fa47ef2c7647945ed4015. 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/AUGBT2491144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc368c66ee9188b3150d4973bab08c3afcfcda39432dc900803964e6527fca4ab. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/AUGBT2491154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f1cab6e913e09e72d00d8c8d1db9ae00915346bcded43f315562e700145a15a. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/AUGBT2491164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x174e011534400e01fa8cb7262554607eac8a578d9741e940080e0772844c20a5. 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/AUGBT2494189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde4d5c9578ce2cce50d41c6cca761da52db23949dd28d3758c82235e5a2b0463. 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/AUGBT2494201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78e4729f81056ed08c87d35f89e7df2208bcced2481af81fdc6c447179104a8c. 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/AUGBT2494205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e61da97aa5728c77afe8a52304767868fcd30697c7d05179371e7399d25b373. 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/QZPEW2505431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccd02a516139b1f2ba937abd30faa7a5ffd06653b3f1cd620cd2d9529f5116ef. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/QZPEW2505432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98878761e6a84cfde20b8375e9f22622867de45ff4b0fdaf4c7d8fb6870187bb. Chain 2 (Bitcoin): anchored in block 958696 (2026-07-19T07:45:31Z), 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/QZPEW2505433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa10af0bd78442fbe2d803348dac4f9babacce9128670bbdd26f9c0fd41aeb2a8. 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/QZPEW2505434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9423df50495a9034e9234ff75dfbb2834957ab3cedcbfba706c808af9232d8bb. 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/QZPEW2510904.
El Vacilón Africano (Champetas Africanas)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x084b138163ae98cba6f2199cf321cf7456d20b8d560e3037ba0ce3e3b2ba13b1. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:32:50Z), 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/QZPEW2510907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x836590c0dbbf1ae6820786d2edeb48224cf209158f7fe947729a2ec15d5cee0d. 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/QZPEW2513636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5df23d2c5ab77ed4d650130adecde1763761b09e069bb8e7e4c22c6b7ea24e95. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/QZPEW2513635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x863b9f89eecc2246ec1c7b1f486d85ac7923d0f4f77fdd7c87baa0beea512234. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:45:39Z), 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/QZK6M2573971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33789e9ae667ce3a395864ef7e73e3ead24ed5bdc52d0db530bcd0eece50fad8. 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/QZK6M2572104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec4eea8d00b933d1a63f02f68e20f98269e45086cd27e0bc9d04fbe573c90db5. 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/QZK6L2510174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88d671490d1b66d23ed84238f8347e863bf3deca4a83fa81b28b2de90188dd34. 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/QZK6L2514052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9342f7f206991e6259683c3269a1dc96dd143ffc81e536010829615f022839c5. 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/QZK6L2515530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe335938e8c584ce9995518a1ecd378590fa791f0fdc6aa6c533782436b89079. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZK6L2503488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30d3cd1d1a64b8734f19adca9ab04c7a57c705207960ed6beb6f8f335026c8f1. 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/QZK6L2501426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fa8e16ffa22900c56629680b8cd300b613f2a23b58cef12b38541ca690efa12. 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/QZK6L2507379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3805ad59d35fc7abae6e4182b186d354bcea0b3107b859dc38d1268d6a27ec4c. 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/QZK6L2546920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35b9f6d5cdda316dfb451a30135e6ff50f94a6aa61de1728520d62fcad6edcde. 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/QZK6L2553764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x611cb1e4e8a7b3198e668fe0eef760f1558c552b5be1d39122928c76dccaa31f. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/QZK6L2551480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10967e68d6077735f1d6d19b2351bc685fa6e64187aa69d2593fed1697f99a44. Chain 2 (Bitcoin): anchored in block 957791 (2026-07-13T02:46:19Z), 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/QZK6L2544350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35fdecef9b64ca7bcdb6e32c72de5d4d9fccf569f9fa84e1fcba576041a62cd8. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:58:24Z), 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/QZK6L2541278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91fe29866f83a89a4d7cfff0d7fb9bff106d0ecb5a35123fe669f5455ee7b9b0. 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/QZK6L2541163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfba6244a3741c1aa7366e484c33fb56c3550e57bbf80e75cac176846abdd6d2c. 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/QZK6K2528808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d97e2e772468d0bd037ffb5dca7b13b6b2103347106eb81862368948482ce8b. 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/QZK6K2523133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b7f0648891033558bdf099b655fd6d531a845d5080e84140f999fda566a600e. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZK6K2503974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87b14ef33093e4265d798fc57c3941c374ada6620f70d534261765149bf600bd. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QZK6K2561912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dd6acfd6f3f6ae1bd1f7e2af58f80d4e098a3da95a7f2e481dc9ddb0f3f5e4f. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZK6J2547694.