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 0x8c6caa487e998fcf9c94180ff5eeed8ac3fdeebe20ad03e33ee4be68423dd860. 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/cb67ea50-6522-4128-962f-045d1fd8c0f3.json and https://artists.proofprofile.net/proofs/artist/cb67ea50-6522-4128-962f-045d1fd8c0f3.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 0x4d143959112150f76c6e69833a08e39747ec034031184deca6475c7d3ab4de6d. 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/BRBV22400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc29a7c5540bd7a4bf5381ebfa5458978632f3f66c2e4473a0de82a76db81ab1. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/US7VG1608985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9c3b67f17cbc08281ac27245ab838e9d8efa2a960c3f85c5d79c0ca6ac78df8. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/US7VG1608986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bef052276951b5ca9056a4f6ef17907854d1919602e664400fd7b1b95b7468b. Chain 2 (Bitcoin): anchored in block 960210 (2026-07-30T05:21:45Z), 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/US7VG1608988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87341f495a0f05e73817ecef990d3179ddf95b7af4a78ecaabe3aaec5ab237f5. 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/US7VG1608992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x153bc00c9f7241359fb6ee53f4981b58c0082a0b76012dcab7846a94bfb43b57. 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/US7VG1608998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01912d26f2e48abee512378ee69b2c1017354b5a77d7415b884ea1db958b207b. 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/BRBV22500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7441deebe19c7e88c240fba0dc9e1cf277caadd2003f208df2922cf0ae90318. 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/BCX6W2500039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf620546e4693ecbaedbbbc9fd0d0327209681e00c754ad16e0eb444db402144. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/BRBV22500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a31f61b6672e2303a4908029783c34e6f8a76752100edf657c6cad2d48812bc. 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/QZGLM2523110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5792a4ab9fd8b058ce59e87e1b0eadb8b4d75f2a1479261c55f7a168d3df7ce0. 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/BRBV22500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59aca7f272f21062b6d2ba0dfdb3508d9cc19218737b08bbe0d3a8203ee64253. 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/BKF442400303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadf5c7dcce00407020f2a2d974294bd1d8654ff6fd2b7c9fb957f69cbd20aaa6. Chain 2 (Bitcoin): anchored in block 960231 (2026-07-30T08:33:28Z), 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/BX7O92400153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x034b8f302d092a7bb1daa0e6c1fc63421417aba9f6891d94041cff6ecd4617aa. 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/BKOMB2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a25651982aa3f4eb7d402624093e886d639bff5e67fcb37585da65de40cf86d. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/BCVI52400032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb90bbe45edca92fca202c7731f343a3ea883b7d8460e1de3373d82930ba073fe. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/QZMZ92450615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe965f3de010bf87bb18e48613be4d40d3789d267fc2dc35d321dfcd1b442da6c. 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/QZMZ92440421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb09993b908775f220cded71a885e64893df574207b69473ddd7a72cf2535e5e. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/QZMZ92426602.
Castelar Belford Roxo Nova Moda e o Jetta Novo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadcefbf151289fedd7f3ee56c2b13a8e7ae63097035123181e4f8441d098ab01. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/QZMZ92413412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2a66f54fd29dbdadf50b11d54f3c89f70b0470707e0ce0ede11ec7b40027a86. 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/BRBV22400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9206f1c3eb7e149e743dd00148fd46586007ae786ef7085cf7358c95ca69a9f. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/BRBV22300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0ddb79db9cb3515515b23452d38ba78940328a817375f5c1032bbb46f5452bb. 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/BRBV22300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x424e3baddaf223f1a12b5e3cc54b82ee73332a189d1c0e3146caa43b184ae2f1. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/BRBV22300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda8d4718de4a7f82cdeb371d259f90cf67820b9b70706ca624daac7cd8f2bb40. 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/BRBV22300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc09a2376657a8cc2f9a5dfc4180bb948dd71669ed4ce008559b4d10a090da2c. 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/BKOMB2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9606f699524c639a0f5d235389fcc8cff565e1e9681d03780c3aee255af4ecfa. 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/BRPK12300255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0e4c009c5bd8c759b185bbddd5ef06e7a3d22a18af84bcb09867b0a12c1798e. Chain 2 (Bitcoin): anchored in block 960183 (2026-07-30T01:10:20Z), 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/BXBRU1800136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa26a74eebb546c3b93012a460f4705b86ccc171bb8d52c887e381016e5278a0e. 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/BRBV22300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a394cef44a69a22b9b87946a2281a93da05352ba312ffe0142e087138d4b534. 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/GBRKQ2471654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3a57434215d93a0edf596fb27d11c5f518c94cb330848234e6231b5729f99ba. 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/QZGLS2281990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x587ee50f8c7076050fc5d505bc9ed5f483d7b678ea2114179ea930d1a9d90fe1. Chain 2 (Bitcoin): anchored in block 960298 (2026-07-30T19:26:00Z), 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/BC3PG2400662.
Cristal (feat. LAÏOUNG, Mc Copinho, Sueth, Sobs)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x942ca7ba67ee3e1e9f5c30f4d2d2af2de03a3028caf561362479029ec67018ee. 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/BKNNO2200031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf282a8311aef425d955f8ca37887d37f0a7870a94d8c6a678d6e976c345e8186. 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/BRFUP1000089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25ad31d6ff0facf59ae20778dc5ababe0b63f2be86215a69cda0aaa56efcd8a9. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/BRFUP0800151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b8f530587b0cb821043e1cd1f0f6b79fb3d3bf23b12f81bf45efe6371af95cc. 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/BRFUP0800152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x234ace11bae40da6114308f163e207fb3f42ce0a5d5fcc380f9389fc655f7466. 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/BRFUP0800072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6a4b9530b61baef05af4b72ef4d3cb8203486004fde4a9713ebeeb5096df465. 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/BCEDL2000008.