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 0xbe7ba983ea02a009f85dbcf371d44b70a9128720bf1576be750f321ab83dba3d. Chain 2 (Bitcoin): anchored in block 954555 (2026-06-20T12:10:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/aea1c9d8-b5e3-4ec6-8c14-c51866f84950.json and https://artists.proofprofile.net/proofs/artist/aea1c9d8-b5e3-4ec6-8c14-c51866f84950.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 0x90e274ec74b02be825157ac33e9e352941d88dd65b30a0da3cb50bdf605fc487. 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/PTVC17000112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x973f882d26775824196a57f5bdc8fc005451bc93893a5d9aff54d277ba761136. 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/PTEM10800014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59b120b13c7db2acf214884857c3c0699be674deb6b0c4786c5032350e78f98c. 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/PTOA10700039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x753fc45c4393219b236b04bbe7aa0bb0a191f416542990120566cdeb1688ad3b. 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/ES71G1807093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67c1bd9ccd33f757f271af78c5a2caad5edba2a1982f3dd7840acddede4b1637. 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/PTEM10700126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfae20de91799cb74d55201750f886f32255f4821d83a9a2d08390b93e45d112f. 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/PTVC11100041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1631ea6e9d9937850e2c3eb80aa15f9f11a9e674923a4b4648f11697a860f53. 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/PTVC15800036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65d4fc2a286bf841a670744edc05f2ff3334f9744863eecdf5eb2d1e5e375c85. 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/PTEM10000191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7efa01fd5bb06e72945dea01217e1483ec245a736ee9b39cb789ba512ab1d594. 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/PTVC17000053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dbcd390a75e07d3976a1dbf590734570af5b3ab58eb76604558c95b2b55d2f7. 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/PTVC16400034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c108814c308fba3648ac2d1199b6ba9eb840c94c6fe8e005b61489ac5958634. 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/PTEM10100143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73024cd1767b9fa06065331a6927587c93659792ad64c2034c90270ced4b9e09. 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/PTVC17500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0234286564d9714cf140cbe0396e41962c3d7e8173936cddcab561e7c9e795d7. 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/PTVC16700041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbfca567bdfc157eaaa3b11334507024033b5dbbb7c8188124d69d3f3da48fe9. 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/PTVC15900063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd00292159edb27f6b3caaebc4d48c4fef28d82c097f60f6bd611c171f1dc58ed. 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/PTEM18800034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fb453b14f6e9c5d3b489643d66ca637a5977ff4032efa717427e824b61e9420. 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/PTVC16200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc57aedf613bd7c58a7503771497ff0a4bc24d7dcb62464fb13a7fba570db3472. 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/PTVC16200013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x504153d10135feb67b0d7872541707f8f7383b97053849f1f4870421d9429009. 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/PTKE11000011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdec32939256af20689f84e9824c2bed5fee63e2e95fdaffff949d35b8a022148. 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/QZHN61920360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5230242287df1bf99abadca5876e5524edbb63de6dfb80290da3986632f82849. 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/PTEM19900192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09cb8ecc95ed39135e36342e259461385b56627733e33e47c24eda7c46422ed7. 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/PTKG11100052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x688f6b3771a41f2d62abf129710d570fb2317b9bd153b90da7ef60b9d8c75625. 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/PTEM19300045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f653df9c02043c23e40b359fa6724ffcfd5cb24b321b159425c93bc827f6951. 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/PTVC11800243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02213622c4ac4160315692c6a14b9ca66c63db235671dd79a559710796230c9e. 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/PTVC16100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3592f9f7e4b2e1718dd2ef72fe2a270ee5016e3ea151269ed6c39ba01c8e6c5. 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/PTEM18800100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d027eac3af46141f80d154449b23f1da6e5c7d02dfbd74699156bc7cf09699d. 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/NLRD52348681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ce60ee89a69784d325e54528a5f414e033d4a972b757fb92d58c109f76e4a45. 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/PTEM10300238.
Escrevi teu nome no vento - Fado carriche
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61a581e4ec358f460630b66b199afb85f357a6f4709d52a561b6173239695f13. 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/PTKE10900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb9c0fd730a73b1d2f591a9d708a6bd0f9966d458499fabae84c6fdd5b582042. 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/PTCN10400340.
Fado - Special Edition World Heritage Vol.2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x754213a07b50161c8ffb91cd02a0929e56e86f6bed8c6eea24e9cf3067fb129c. 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/PTOV11300149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60b151b97d9d38e163c114265c722a6f787b977b99d9967adf1823a6330eb5bd. 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/PTOV11100028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6c6f408c0f82fbcb3a4f6532efdbb4d0e8d389624999323dafb55d08712f233. 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/PTOV11100034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bb2201d6ecd10a8c54124f7b0d2d6542cd4ec83d75cfa955d5a39a6128a02ef. 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/PTOV11100035.
Emocoes Jose Da Camara Canta Roberto Carlos
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94ec81f15c51a97c7596efc348c2c013b7c07ab08f977557f2bc55fc4b449385. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/PTCN19900022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd00292159edb27f6b3caaebc4d48c4fef28d82c097f60f6bd611c171f1dc58ed. 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/PTEM18800034.
A moda das tranças pretas (feat. Vicente da Câmara)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c2ac651345757f80649f2a47ad211fde6cfe2631fb0e09ff83199ac37bacce0. 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/PTEM18800031.