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 0x1e915bc6684a993bc215185a57fb3c936b7d0e048801cb4363af052421a6a107. 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/1b85bc4a-f407-41c1-b471-cb5e07833288.json and https://artists.proofprofile.net/proofs/artist/1b85bc4a-f407-41c1-b471-cb5e07833288.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 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 0x7a1623db698677e4dbb31a36c5ab6fdab4613e7a7680ff8166ff9186b7a7c304. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USDBB0601394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x798772a1c191778a5b0c400e79dd2c43e86462691489a8d81589c0be81b2ce18. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/USDBB0601420.
Orchestra Harlow Presenta a Ismael Miranda
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b1c563eb3397fd6a9f31649348566b401d83446651b8939e449f45c6403c3c1. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T13:01:04Z), 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/USDBB0605349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc63930de719b97e5b02d76a2079c6a56df6a0013df011458caed0de2b594acf0. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/USDBB0600873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bfc8622566f3e554290714c89a619d6201f70d12633244c0c6302f6549a0571. 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/USDBB0610174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10e1966dcaefde449996eca9cd5305ea7ba2eb282215c16dd870da02b7f72dff. 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/USDBB0608361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe214d0297c86678d45d55edb8bf67541fb76e70481b1aca70055261ea98cb173. 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/USDBB0601135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64e5ab5d2337cd5300368ca9cb02610dc91d780aa71057fb3e8137305074e505. 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/USDBB0606655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd723f1768569cbbf1b45078ade4ad7a54699ed044ee43e71eb0b978defa757a. 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/USDBB0608089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4912039317e821f721d698870aedc06bbfc9dddcf2f639ce6e24010d91f2730. 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/USDBB0601488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f22d61eb30c1440cf9e4034e1abd104c8f4155a366765259c61fb5183c363a4. 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/USDBB0605185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe76424f38ab9adae8b2206fbe4ec9887741675507bd241d688e7cf5cbf719324. 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/USDBB0604295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2bd5d787c880f105e53b5137e015ead43fcffa589b5584159b491aa96a00b2c. 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/USDBB0600682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87599d0978bd7ee671d1964286c7b5c44ff4a94e7b8eaf6450e69395befcb2f6. 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/USDBB0607712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfadd9e314ca771527c379e447923140dd980ac796d1926e794f309694c6219f9. 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/USDBB0600332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc208b5ba2592b23f13a93d96bbaf6d75776387eaa3f75ee2941afeadd6c456b4. Chain 2 (Bitcoin): anchored in block 958681 (2026-07-19T06:14:54Z), 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/USDBB0600335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fb0095b8cf71dbb2bfec2507c37ebe9dabb12a141f793842d7ad48abd64e9ff. 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/USDBB0600337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03f6bc2e658ace4a423418149cf2266c212f03be4b22307c00d979c8804914b3. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T07:48:27Z), 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/USDBB0600338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bab6758b233fb421b971ea195fe24fe5f7eb816039d5f49d439bbf4f0e2ccb5. 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/USDBB0600341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a434e73a60056786355c1527ab8deab2d67b4823a958982a5dd70a86deec7f6. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/USDBB0600342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63de4fdada66bc71fc54d41773c392bf9dc404383c212b21156629b72fabbcf2. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/USDBB0600349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa65a7c3be6ed91214614dbadedb9333ea8062029c1fbfa75f26906df160be481. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/USDBB0600351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd42b09adc05efd04630d28840669da6ea1d161824d9d079f086eaf8703ebe52c. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/USC4R2000860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76d1118c5a908f2911cdf9593d2e292b0b1eba5c13445a6dcbdff42109977d77. Chain 2 (Bitcoin): anchored in block 958613 (2026-07-18T21:35:09Z), 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/USDBB0610162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ddbb1cfea7c83378e8e1d38c1a4b2db9999fef1046bdba5d2062209af743c34. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/USDBB0609834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x787a2ffaef0445ca0386417c351eedea06f01f8c1c1c0e4553d7f388e01b12f7. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T01:47:42Z), 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/USDBB0609948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x590e5c87cc0f5a829fa6c22a03247d9c4390fb66d259ba78ccd9d7ecf2dcf96a. 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/USDBB0609632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5195ffc64060d3533cbd36f29d5d9c519933080d8c1f3f6a96e8dcbbc5c3f8f6. 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/USDBB0609700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ff17ec1fe811ee6a954396c498896162eda657855a0020dcfe5fa49dbe77597. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/USDBB0607360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f8bbe1bb0cb1453537f2c7fee8335220e06f534687bc35e22fb82cc36772761. Chain 2 (Bitcoin): anchored in block 958510 (2026-07-18T06:38:22Z), 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/USDBB0607301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa912a4bd8f83b452ac99e2437d35e4a77ab16e2b94a11dcccae4e17dfc58da75. 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/USDBB0609137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa56e79667f1b25ffba0e690c72bc5035fca3892b878b9726492640af6b73dc07. 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/USDBB0605293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1de00b7d104cff0bfeb0afb87be30a1c7e7a5b81258d3c53e8eb43aaf700e214. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/USDBB0608853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ffae70fe7d88712bef807e69d6d32420967f1d4ab9228f0c0e9b709f14cf2e4. 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/USDBB0606312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfd400fd27c243d29cd2985978a2b6ea8d291e3dc98c08af0952b80eab7c934c. 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/USDBB0600167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44537ea0ab8fedcb8b55f87cd31ed4ae47b984c9d4eb0d611635e12d3c878e5a. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USC4R2341121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x798772a1c191778a5b0c400e79dd2c43e86462691489a8d81589c0be81b2ce18. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/USDBB0601420.
La Revolución - Eureka The Butcher Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x899f85771b1a1275083569b109db3b35df9162e6f00a06a2f17b85af828387ca. 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/USDBB1600066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70701c81d510aae49051c20f25e2bb6492cf1defbc4f9cfb107edf98561689d6. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/USDBB0600871.