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 0xcaa570517ac9433bbd8ea2ab4cdfa94bd5e18199838e09b6200d3171654b13f1. 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/6521ec14-f596-471c-95bc-bce607ce8b09.json and https://artists.proofprofile.net/proofs/artist/6521ec14-f596-471c-95bc-bce607ce8b09.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 0xdd229edf58b587f9a049950885620ccd29a0a579b37497ba95204f24af6640b1. 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/BX0L22400013.
Vi de Relance a Coroa - Clementaum & IDLIBRA RMX
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22344a9847b97079188c0d771005178ce68541a4dcdbb5a57e6825f190afe2e3. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/BX0L22400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x887a1e26abdc34ed0c1b0e621684e625fdd54bdd24f450f1be1b64629eae88bd. 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/BX0L22400014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf547a95b6326b606be476f4b2b34927df7752a60a044bb2dd6fa7a3aa67c7efc. 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/BX0L22400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5d5933e3957c3e813497031a8c6ae42a55508b955e4aac620dd355bc04f3a91. 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/BX0L22400008.
Ladra - DJ RaMeMes (O DESTRUIDOR DO FUNK) RMX
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11d3e6bd73163ee1346775c5be8f40b455756ae72713849089ced58919de0da1. 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/BX0L22400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x872256938d7e52222aa60c2ba372b735fdd172940bab22a515d22638f643cef5. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/BX0L22400009.
Um Choro - TELEFUNKSOUL & DJ Werson COLLABAIANA RMX
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e65f2bc982d578e974df8763d182ffd33ed2031bb8460d8122c9f71cfeb74c1. 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/BX0L22400010.
Lembranças Que Guardei - Marley No Beat RMX
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f891596097946cdec2e24742813ccb74d79cd565beae860f6d3f0ad8ef2ad2d. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/BX0L22400007.
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 0x79b67a336dc228a19319f42a45177d40d897fdbc61855fccbd7e108cee94c09c. 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/BCI1D2400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x736a4cb6dabd969d9c23249715036127d6090fda05b40e11b8697301e975a3d8. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/QZ5AB2417181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9412abf272c091ccce4bafee9fc7f969c4464f9d5089828eb715155bccdf8c59. 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/ES18F2500784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x015108c3de8ec5362a4cf08e36424fe4483cf12967642e17376ee703cfb17dde. 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/QZGLM2511317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9158f69f5efab93622ce84b6cd81324d90f5482eed654ca1c72f40421c40d859. 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/US7VG2576217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcf16628805bb2273953ea5b7ad71305c321dbe7bcf6b11d3437ed94adb9af42. 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/US7VG2551080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x401abc59b120f3c6b2dea2b8e3a12b92aa20017139b04f36787bddebd1cba6f5. 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/BCI1D2400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79510fc35935126e309a4ff003b60b86cf36a4f2c7ef266af4ba86371dfb6d4a. 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/BCI1D2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b93d3738b30aed4e47d90d9a3d16681f6ebd1569dca6dbdb6f8f2c169cec0d0. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BXJHH2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03bda788bb1e269c93b4a15242ece8f34ab5b02e591217cb748e1b98483e16df. 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/QZNJV2419849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f52bc8dda81bd36137bc719ca7d484a25548b1f242164c47317443f89cc39bf. 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/BCI1D2200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b8998007137aa78af987548843a8f624aa9135f6ed880b6bee494aaa1df9051. 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/BCI1D2100017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65f6d42caf87b6c3af47d01e87b2ad943769d21f7ca8eb22828997ceb395c4ba. 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/BR6FF2000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x722e4ab71d5ee45c329b807561053a88f9c076fa3697368f96cec829addb9f6c. 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/QZHZ52095823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x181293f0f2b17c1105ddbbcb386ad62474d8e9a2762006a0c0c784418b98587a. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/BR6FF2400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef83828891000b34998fc19e98c22470ca38dd7399420c50b408b3a37d4fb40b. 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/BR6FF2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c42c070664124af7bf209c70cb295522ffbc3d2f3dca7c9861f8946b5054671. 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/BR6FF2300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba6490967c0b6ddaf15046b6a6c51db1ff8996c6452dd205e409f070537f3eca. 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/BR6FF2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46d862ab249ff88e86e7f9a24ff7b8ca221d2b91d1dcaddec9c021626799faa0. 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/BR6FF2400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc230a13c52a5ac88a409a62dccda66165d3938e0ca68097914371569a1aa070f. 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/BR6FF2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x280a68755903a1a41e48bcec745c22f81865f8d7a149e6b04964937566359873. 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/BR6FF2400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef10f102d5ffac653838f9b47cdce64bf4bc28f30983dcef37ec0f0cacd3a39c. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/BR6FF2400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09e9f97a247247303f63b7481d702365347c9c7f2b3fe5807773a0b523f71187. 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/BCBZ72300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8961e60d6b4a0d497c24cfa6636aa35832526407984a3ffeec1e4366f23f7ef6. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/BCBZ72300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe46b40ee81c049385762767dbee5030630d610d8c2af813653df727273dd3d12. 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/QZFYY2066429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1d8a1cc728527f78eee64ed3772479dce759481802c9f5f4ec68f044c0ab497. 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/BCA7I2100090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd968667631ff77092721835b4a7d0035da9ed7f7e818b84db814dc0d50c4959. 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/BCA7I2100003.