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 0x9d6eb4aa61b17083fa4f64f4bb53ead4d6b5172588ca43ae39fd6ef92dbb2642. Chain 2 (Bitcoin): anchored in block 953704 (2026-06-14T22:58:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7a75c3bf-63a8-4dd2-bc39-a623c8634c39.json and https://artists.proofprofile.net/proofs/artist/7a75c3bf-63a8-4dd2-bc39-a623c8634c39.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 0x411fa7ab325de039b0c8e0ff8a45de7adc6041c9acab6b692be1495c4b155a2a. 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/BXM2X2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09a57778d3dcab81061dbb649605f43185742d5772585dbe12fff747792e6457. 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/BXM2X2200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb15485c4b01185473e9072f889800d5aab70765262759b3b996c2d81bdc8d39e. 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/BRVGB1400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96e8233af343be1931de9ae3ca83c5db0430b8c40501d01395ca3e3df9b4bdb0. 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/BRVGB1400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1d6fb0451cc1bb776611c764742c497bb66d281560f59db63368d7fbbb09af3. 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/BRVGB1400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb271fccf36ba34efa637bbbb3da79c193e328fe3967d0d23ddfce34ea258fcf9. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/BRVGB1400007.
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 0xd545283bc666db845c7e000f44aa8d0d87924093e36410efd28e5c00e93c6137. 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/BRVEC0900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38f325e393202135f82c77d3c2d41fcee3ab0a0788df45708c4be712b9333dca. 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/BRVEC0900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcae4ae221ae37e2d241e57c32bc50d73da6fe4dce4bf9475f0923db00df052bd. 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/BRVEC0900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x290f00957a177af5dbb1115a55c93ae0458509846c564debe48aa88b401f7221. 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/BRVEC0900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaf5df5e746362647834f386ca43d6f3cb1935a8f6fd7ac89ace8415856c2cd0. 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/BRVEC0900005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d5d9aeeaacffd7d0e887d844ee26c3f90f8022e3c78feb7a75e29e8388d974a. 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/BRVEC0900007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2da1f4a90355eca0b02867af7b66703500aa26d94b70beb1062129a61de27fc9. 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/BRVEC0900008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0551c26e7eb05de9130c82ea76909c195a775a0f2c78a8cc6a97cb77a8347866. 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/BRVEC0900010.
Quem Diz a Verdade (feat. Leonardo Gonçalves)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcb5012d257988c230362646540f3ec867bd94e6c29f171913ddb29d3a49cae4. 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/BRVEC0900011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f7ef97e2d88fd0a7bff394a7fb20f588b6f2c26e6cd37d11eb204a53c7374a6. 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/BRVEC0900012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dba6556a51f996b62947a801e2971099248bb0380d5d2bf5bc06332098bfbde. 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/BRVEC0900013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51c6b123515a88cf73db04c1200e1b215e9bd60d6b6043c6afe7a3a7bc5662d1. 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/BRVEC0900014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x674e3271c6d0e25b50396f73853dbd437fa36e545ebd0131585d00542e6e17d3. 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/BRGB90500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ce3ce65a3cb45ceacc7ac2bd90e46fec894ce23e393040c840d948f99b663ca. 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/BRGB90500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde9258bf54e49128ca191fafbce482bcfe148b0fa471f2c4be4f1add52c86bdf. 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/BRGB90500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cd7483342995bd78ddd7e3fedcfc01ab02dd30e91b95b9ab7ef3fbe473221c8. 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/BRGB90500009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61e5a334a77c3de9f56e24f836b5a50670f5405638bd0156613cd94fc091b24a. 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/BRGB90500012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05193914cf93194782176779e63455652fb590a36a9d1cb2c4343f936504dcca. 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/BRGB90500013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa941e9c0965a7c72ba2fb4b505d5a5b78d213e8975514ea7ae7ea69201831a3. 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/BRGB90500014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcd5e735cbcdca347711bcef500ee559731dbca96efb667b39eb4e50a6278bd2. 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/BRGB90500015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa706fcd428b6ca4812ff0373b1367f4f8e15d6cd4ff8df7a95e60e041cd52464. 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/BRGB90500016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d413306b0cf16af704bbb7445ba5a2c3d0011a6dc97e937690d19cf277f63fb. 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/BRGB90500017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb9d0f9106a81881726f29e97f65302876b216c52cfae43b32b007340b7c72a2. 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/BRGB90500019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9c46357b1d0e1ecfb0a278e18d85cb3c54b7fd10e78f84d9ee15e11a18b0352. 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/QZ5AB1751937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18920a684130aec5fbd4e350fdb360b8d794c649054e9a91953b4341563f5ff4. 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/QZ5AB1751944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84594236fc044fd4ed6bdd7d122840c4dc84cb6d6f9c6c7a0dba0e80f2400947. 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/QZ5AB1751941.
No Céu Eu Não Vou Chorar (feat. João Alexandre & Felipe Silveira)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xced8a63d341c209b6a121d0975549b5c35030d178edd70e4e6895c7f5cb02187. 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/BX30N1900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadb4184ba97006aa65d9e41656728fa510f76bb0df7fd87ba97528d70329ef1b. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/BX30N1900003.
Essência de Deus (feat. João Alexandre & Felipe Silveira)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabe822c5c742035ec0b45e72159804079316616309b5f8dba0f525d9e538d747. 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/BX30N1900005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3ee66216c75e02b68d1dd394b5da1917fc19202821a56f94c38cbfd30bad2d8. 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/USX9P2090139.
Quero Confiar (feat. João Alexandre & Felipe Silveira)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd37a92b7cb21a13a15326087856cf65197d10d77885f8d5904f6d117ca0a7a68. 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/BX30N1900002.