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 0xcbc7cf42e7eb7e81667601199a416e6d65cda8ca449e74e8fdf44f2de8874a5a. 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/5ab5215c-eb32-408d-99be-74449890a5fa.json and https://artists.proofprofile.net/proofs/artist/5ab5215c-eb32-408d-99be-74449890a5fa.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 0x843c046081a56eb1067f9a67fa2fed84b0037a4528e30bd0e14548eb7d5eaa2a. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T00:52:19Z), 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/MXF119900059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0312dc80c45a34ff64861c85b34e653b1cb4a56d2729206d8beb5636785e1761. 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/MXF119900066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b0d86a45fa7d8ae091d39b4e622e2899a015b47e581d32dac736a8288ffa847. 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/MXF119900067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda311025ced262b1a58bc172c6b72a0a43bf932059ffef76f6e79c28ddf3ac86. 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/USHM81964960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa810d0c056eb3f61cdc99c1b98f74bd72858b540739c88d6ab1e67afb49ec09. 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/MXF119900024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82aa9ea8efc279909dafbc838437bb48c5f23161aeb683f04ea0f063133df37c. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/MXF119900026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7016d69f6f48c1ecd7100b65b2cbd28a01f603cc5486d788d341ac3bfa19b659. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), 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/MXF119900030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7016d69f6f48c1ecd7100b65b2cbd28a01f603cc5486d788d341ac3bfa19b659. 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/MXF119900030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d1f9b8b395e4333030abc7aa3f1c50334f651f7240d71ab86cee168272debee. 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/MXF119900068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x876e16c284f8d67213a614977d4f23c0e3ef201fb677a3e572f24f0ab61c388d. 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/MXF119900065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad2149168fb4cacdf156ec48a83bf184af89368e9e9cab431ce862f13689541f. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/MXF119900060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x237254c9413577fb45bc5e65f41f8ef5490dba0997b897614cfa2a2e6f715574. 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/MXF119900063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7016d69f6f48c1ecd7100b65b2cbd28a01f603cc5486d788d341ac3bfa19b659. 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/MXF119900030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92bb932fbcba0982e71ec1a4fd86afd6d9faa8d161bc5ae66783e651e82f44a1. 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/MXF119900023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4561baa14b2b4912ce65adcc157ef04f826a92926669f35087f3a4db1c09422. 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/MXF119900061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x840cabecc3413342da78daea4507234c84e512634740733fa2dc10aefac3cfa4. 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/USCGH2345322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5f105310b80cf022cb8e16aef4a61b7e8f63146686e2a0e4f8eb7d98f2c447f. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FRS182139263.
El Amor No Tiene Fronteras (Mariachi Sinfónico)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed35e7a729c393ebf6cee4ce0f1a4e4eb4276f785be6c06966930f4baaee16ad. 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/MXD781804634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0518b1a8c1b5ca491918fe08d564e6b7447e8034750f791dcd8721ebfccbfa47. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/MXF650800011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15afe9e9e4b7c63de1fb529825b53d0e9c6e4c6ab4cd9147289d55c977fe600a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/MXF650900009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55932974620e7eb53b4c16ff7dc28fbc897dcd1907e95238c9c0c962bcd34861. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/MXF650900016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15afe9e9e4b7c63de1fb529825b53d0e9c6e4c6ab4cd9147289d55c977fe600a. 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/MXF650900009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0518b1a8c1b5ca491918fe08d564e6b7447e8034750f791dcd8721ebfccbfa47. 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/MXF650800011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55932974620e7eb53b4c16ff7dc28fbc897dcd1907e95238c9c0c962bcd34861. 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/MXF650900016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde241338bced3e7ccae8bdfcd83e3a8f59774f5907f89c9d68dfc6f6a41114e6. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/MXF061000063.