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 0x5466f457b1d9305d80f29f4d42a2422a0ae21915a17166c1668760088271324e. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8cf03e49-d463-4671-aac5-615cba1ebc3e.json and https://artists.proofprofile.net/proofs/artist/8cf03e49-d463-4671-aac5-615cba1ebc3e.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 0x0258b44388a42eb52badc896d619fab4ef60bb7f5cbd27aacf76bd1f0b9efbf0. 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/BX3PB2200019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc05fc1c3fa301e8e07e49824061bd9bcd11dca2388b95b59b2b34ff531c0c88e. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZW9L2293673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4a438db08f001714409e2db19488c887d0b6acc80e5a40f42fe5e4ce9ba0d95. 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/BX75Y2400142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f447bd4d577ce27aa6a7a896bb502599646b0abcd36d705d44ec6a9dc2942cb. 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/BX75Y2300112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4488780e86d4257ab15140d2491fa5d91a7552e4060fd6d3c0cded2aeb24a6e5. 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/BX75Y2300090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14660878e674e7dd8ebba12363bb6ead71556ead6396f2b4bbf035379362a3b8. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BX75Y2400169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4a438db08f001714409e2db19488c887d0b6acc80e5a40f42fe5e4ce9ba0d95. 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/BX75Y2400142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbdee7ae905e387b0324ce0bbee4c8cec6e66b4c7b2b55431c85c2a9a54d3ffd. 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/QZGLS2417089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f447bd4d577ce27aa6a7a896bb502599646b0abcd36d705d44ec6a9dc2942cb. 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/BX75Y2300112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4488780e86d4257ab15140d2491fa5d91a7552e4060fd6d3c0cded2aeb24a6e5. 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/BX75Y2300090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbac26a8820439dd5a55454eb5881a537632e7a3df9c1f3baeaa2db5d696ba0c4. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BX75Y2300072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbae1c52672af4d8062b0a2b94d144d037cd458450bd481651361ee1aa3af1281. 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/QZGLS2318904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8be0a786650fb9e70e7d73fcf77802bf8ea38a5bb70bcf2389ceb5bd98b9532f. 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/QZNJZ2233608.
Churrasquinho, Versos e Poesia 2: Final de Semana
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b98be7036963c65619082285971d7fece8e8ac9b8f360e3869a39e7047116eb. 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/BRFPN2100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ccd81db69e6d4cbf32ea3be4232c97d1e62cf755e4ef10ecf4dae9cea52f23e. 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/BRFPN2000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb30247b03a476c9238e0734c45e6e66cae0ef9a0a1eca3d05d5cce60009a1352. 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/BXJ3W2400013.