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 0x9ea5ef7e35e6186d35d739c30fc0435b3ecd4825fad2803a6be7a74b4c50cffd. 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/ade09d10-68be-4bb5-a1f2-5a170f0809d3.json and https://artists.proofprofile.net/proofs/artist/ade09d10-68be-4bb5-a1f2-5a170f0809d3.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 0x88684761fbe0938d395d4b8aa9fd179808c1c3b13e364e0405725e09d4fe45e4. 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/QZZ8A2429862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a4111b2f5f217c5dbe39e0083be3ed6c40e50c08a64451c0fa7cf112ffc30a7. 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/QMFMG1504558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ce751a04bafb8a491156f51faa00a5e90b4f59c52a744716e45c0f33fb82af3. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/TCAEB1990238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8cbd9f8a4fa9a9f0bd147d8d0574c66922368835ed17cc3db321dd4a01b147b. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/TCAHM2313118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc519619ef3595c0e35558ae1362cd6b5d7c01d3787f0a79c25fd39dde69cd0d. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZWDD2482265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1070773a2b7933c02eb63a9c872f8a619923bacd02e4d8e4f8c2ac9dd8543c09. 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/TCAJJ2563563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1291346252743ed2f57bf81c32fbfe6a8629cc574eb70a9baaf0e6dbd8fdf7a. 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/QZNMT2542329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x988d4d4550f3ab08f0b6d27f0059ae4e449fffea91b51a816c755228ea3ac54e. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:33:38Z), 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/QZNMT2557618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ffd4edcfd16842285321d8a475db38c73c187d5ec40ad8db2de85cf1395f01c. 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/QZNMU2565149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67ddea5cfb314db83bc4613b39ed0267b5986132db5122f4d0a3a23b4eb66fb1. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/TCAJX2589468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3a5d52e3a3952d5fc8b88fc658749334c3a1304ab88b210a2f42150e84340bd. 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/TCAJX2589595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x636c947d8bdfad730fb4bebe4ee63387ccae147c478c0e83b6aedcdd599b34e1. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/TCAJX2589602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6689fbaf95d69ed0e4f3a4b36d68da20dc7e4b29f2900f05290fe6f98767b765. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:35:33Z), 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/TCAJX2589614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe166b4e83469e162d15082b1d938ee456dbb4a65da1e951ccafd5f1e96cea9a6. 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/TCAJX2589618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac81b113a1d1b1c4b5c8048d3dd58bad8ceb9c692a6c876a9cadef5a2dbaec29. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/TCAJX2589624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x530a04ad51612afb5e7a78c761ccdf2c8c87a517df2f002d082192be5bded4ca. 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/TCAJX2589637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d426e2257a7276dbaa08d7866672658cc05f8c3e4875f4a0087e4ea4390bd7f. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/TCAJX2589649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e946fb9e4556b5bcac9d324f3523784e89c3bf39b60115ec262c5b998d6cf96. 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/TCAJX2589655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc104f29f4dda398f601908e7ae48219d4e75febd943b3c90317e28d10e8b676e. 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/TCAJX2589682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6add725d9a83a0fff88ef0c331ff43b6bea1b20e412d69eb2282a5ba1afebc60. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/TCAJX2589692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x725cd0a571eb2f2758defd93ec800b4463c71f8974beeb488de03fd78c1bda01. 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/TCAJX2589702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9024f9189144bbe72fa4582f5859f310e648c020c9ce1a13faab3c89e00fad15. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:13:09Z), 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/TCAJX2589731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87f8fa080d42a213f8b9594dcffaa7b6f283eb6221a1b6f464cd4bb025c19c8a. 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/TCAJX2589744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffc14a0dcad2a92ad8ce00f739f8301da794a82fe271b243cff022086ddff1a9. 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/TCAJX2589750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61ec907108c9456228e7191aa8634c853cf4f11d32420e3e2dd8cfe6d93bbe6e. 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/TCAJX2589756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5808181106041efdb69ee25498d9e34c3b8b4bd1c9ceca5fa76ef6ba1ab81ec7. 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/TCAJX2589761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b4ac978ff79015df8b088c4dca579f8abbda71585f2b4ab1ee8b22a22eaed25. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZHN81961226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b79adbb2881e6a482f59414eb79d963b9c90d5fc0deb3599d9b5406625d1e3f. 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/USDXS1800210.
Mercedes Benz (feat. Tali, Lito Kirino, Kapuchino & Nano La Diferencia)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd53ce578c2b87ff834bad6fc13b9a51a6b130d07a20974c2a32f4bb82abbecce. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TCADB1798372.
A Tu Nombre (feat. Lito Kirino & Kapuchino)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf149e7f4940293ae6f928c9d17c4f970b85b245a3a57220dec080176dd48fb3. 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/TCACN1669583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9c7feb203bae6c9b3a99f2296cfd2e0ce7855ed711df9889fde2a2e5e0a6c9b. 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/QZQAY2113525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aad1a81d78cba8ccd105dc34427f3dcbbc7ba86644efe104cda8f5769b830a4. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZWDD2272344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x509c9b8930e53df56adae7cfa88f24e1e465d34fb9f805f416276e7a23569daf. 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/GBRKQ2388489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccd0a7230126262bee9948f7c8bfa4d9af4139d6fa5d138769e511bea1e4178e. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QM4TW1948831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d096715916c7e07f3198239c29d4a388beb029f1d648e05f9bb4991030cf76a. 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/QMBZ92025371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05cc20111ccd56c32d4184afe99165549546e14552a7ad06482815a37eaf5873. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QMHUY1650737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a51553d2aa97a49724f101af7045df3220ba663e3bd7190cb66829869e3c020. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/QZHNC1988735.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch