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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bbf6b3f6ad1e13d69b89b47b7d026ff20baaa786193ef67cc8a44c69ef57a17. Chain 2 (Bitcoin): anchored in block 953758 (2026-06-15T07:48:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b51818cb-4a11-4a59-87de-84162d8efb5b.json and https://artists.proofprofile.net/proofs/artist/b51818cb-4a11-4a59-87de-84162d8efb5b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Dub & Mixture (Improvisators Dub Meets The Disciples)
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4bf1317cbda16212a71b85e5036f9cdee51a0c04d372c55b24b4339c09e8d07. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/FRQ039900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dea64327a64a0e82893130a838ca98f6806e5fb3226d3a754caba0b9ad14ebc. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/FRQ039900005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fd6f4a2de502c8b894085ab59422a82af52dc1190b473ce7a9854c5df921e75. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/FRQ039900006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa6e514313df878063222f1b8f8ae1db1e74f99456ed0356449a590db858a0ca. 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/FRQ039900007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcc0e5c36def110edde0b7805cc5be6df6c15a1217105932bcc244c043e9b1f2. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/FRQ039900008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d4472f0cf025c1fd7098c486b85405a16a62f178d265f850dea029d25c10915. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/FRQ039900010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd15712e518589c71ee7b118aa118c613cb7c97fa44783dd30a7ed5620ee286d1. 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/FRQ039900013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x888ee2656756f2b2d47f5c1a633e96a9c6421222d49f9937ac8cd2977dbcff9f. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/FRQ039900014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x207c43c9e8141295215f945775200a07d3cde1241a00fd78911e2c273f384a41. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/FRQ030200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x451127e40652e03769095cff93638a5fa7e8e496832a7fdbd6df81df02ff0209. 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/FRQ030200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe29f46d4a2c660051e5a99aa3483ebb1ec74bdd3c7385e846e1ddafa46db6e81. 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/FRQ030200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3040933c5d0189e226299e1658065e3f74e146ee55252a09b783335ed26f63b. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/FRQ030200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3957b5723785978905903c8beee745e08c8bb534a36e9d0d89953bc35308c7d6. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/FRQ030200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a3a8e06aac515ac29d6fc0db0fca633450031ced78a8a83b6883a589c62c278. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/FRQ030200012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa32608299f8ccd99d0c806ebcd08e0d2481a153a665b1553738a5b617e951cf4. 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/FRQ030200013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd51e93d978d1ab347605433511f3fba794cdd0f4ec0130c80ea9d44b5154f78c. 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/FRQ030200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5129ddec7716f890d45cb88f70606ecbf9c14de6fb94781f3179b02d996d1c01. 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/FRQ030200004.
Highvisators (High Tone Meets Improvisators Dub), Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6bcd1a3501af8024a85eaa25a82a3ae0850ed4c60210886c46a48eae56b36b3. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/FR6V80817454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39e1a42258143616441de1d0183dbc555edd3442750a10ec1c25b73c41159559. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/FR6V80817455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x321c92ff81a3ec57d4a56b3a9926cf48508754a697835a7b82335e7cab6e3471. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/FR6V80817456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x571fd74603e092a770f20be82f3dac358eb00e21c88636d3309f54c3905dd7e8. 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/FR6V80817457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf0ab9d4c0124f3c997337aa4c9a4296e727af9b9dc06d2a8890c95ba4f662bc. 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/FR6V80817458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71f001d2fdf6c240bdbdb82de600e3f891ce4643c2ccc83d2fcbc3cbb398c08f. 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/FR6V80817459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dd4fc83ac106d5ae00f27924ff09cbda2a0306f80c3779d0355f38866b0fe57. 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/FR6V80817460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7472125a8a54252d6a4bd6c06947746e64a80f344fe74138985eabe0cef5bdda. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/FR6V80817461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a27f12552206040c91e47caab6dc037a2b05ee8337d45f866d4b88457739102. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/FR6V80817462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9f3e0d65b83ab5975bc2695467d76d3c518b12c6a39dad33c4472fb1c60d999. Chain 2 (Bitcoin): anchored in block 960381 (2026-07-31T09:50:11Z), 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/FR6V80817463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2ce6564600a9be7248d36c58000ed1bc40fbcbef433a70619b4222ace866fb3. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/FR6V80817464.
Super Vocal & Dub Session (feat. Danny Vibes, Jonah Dan)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe24617ecbb00780388baaa1390682c7b4e8f197e38679fc23830f537c519af12. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FR92U0400200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18b6a2cecd0c218dbcdc1cb72497f146325307b41a7d97cd58d3dd2b28b6edfd. 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/FR92U0400210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76f8542f6e90b2714c5f9023b554a0d5871ec05c961f3d60dfb1e8d862c08c88. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/FR92U0400220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7550327ef9f51c8655f17510896fb7cc119de2b612ffb76a5a198205848e613. 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/FR92U0400230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc24edf711aaff63176f9121ca89fe48948fe61029f74f64b1799a58dbe23392c. 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/FR92U0400240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaf4b0d27e495a7d399695fd72412abae4f9cd7514b4a57f46c95c4d51b02032. 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/FR92U0400250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe110c682fffb96f076eb8efc5b4258b5f77a28969590ba1de5a75a1a0a77f297. 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/FR92U0400260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dd36350ceb0ce68e21be29b9425e2f777a67a06d4f4ac88f9f5489f7aa542b5. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/FR92U0400270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba4155e74dd1e09974954b2cb4e2a87ee4d71f50dba1b709a4f97baa16ac8ca0. Chain 2 (Bitcoin): anchored in block 960314 (2026-07-30T21:00:46Z), 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/FR92U0400280.