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 0xa4f0d3970ce40c56b065fe8c977fdb9ececf6d433e51f98649dcbfe04a7a773e. 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/08447ce6-2757-4a67-93f0-1ef71ec8991a.json and https://artists.proofprofile.net/proofs/artist/08447ce6-2757-4a67-93f0-1ef71ec8991a.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 0x9861d008ad45e59ed995ba8fbc7dd65bcbda4382abfca80e5f1c94bc7d54c906. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USCGH2340460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37961efcd0fa6b5e17417b1684202deba9d3f83cd38c59536a3705a02465da6a. 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/USL4Q2296570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x745b090c2a9f86026c45ff9f6164fa823e7cffff9861741416f9bd897dba87c0. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:10:34Z), 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/USL4Q2296503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x291fbf3a1c0610588c12b69ab66f690387cb534d7b1fdbf29c4c728ff5f80052. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USL4R2243475.
Tecnocumbias 4 en 1: Serie Especial, Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bea61bdf201a6ad669ec147afbc8a8d4cdc9e14674d7168678adc2a5a60130f. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/USL4R2243616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5debc0eaace2fbc97f574bec034f2c4fd7dd682e7ae3621cd046f6fba008461. 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/QZK6Q1938576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a5dbce1834f01241e355907698bc7078159af22e621256aba90636afd6aafc2. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/USCGH2340451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a64d1abb7e832de2aead3871010f23081236e369326e6e3e62915cb4bb78d86. 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/QZES52219416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58b5baae5f99f741f3a472a06d201d41f120eae81e65534fc0316dc88b4c59d0. 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/USCGH2340477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90e938000428c474e022db64a4b3da4f014158e9512a0cb766c481cefc740fe4. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/NL1AP1901109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13ac860cc53d83127e533b07e1784196d9aec38b010ee298f7d5fc870083049e. 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/QZFYW2074520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37961efcd0fa6b5e17417b1684202deba9d3f83cd38c59536a3705a02465da6a. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/USL4Q2296570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bea61bdf201a6ad669ec147afbc8a8d4cdc9e14674d7168678adc2a5a60130f. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/USL4R2243616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f928a93d8d0071988146e210ccca62b2a5216b8a4c2a27557b3c48c7ee25efd. Chain 2 (Bitcoin): anchored in block 958819 (2026-07-20T06:52:22Z), 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/QZK6Q1938566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f3fdc863b2dfd37ae90b6cdb8378797075616c955fa260968129a3df0de676f. 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/QZK6Q1938569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ce8e4e2e427ace9233e0aeda3b3d55bebf5a42f2577140a6352399324e34608. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/USCGH2340448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbceb03a63bf3ffd1d9b8282450e9afe4d106b5b7de15761133d896280d4f4d88. 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/USCGH2340452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedc3bc7e5a66f1e28385652fa37a78397e57249bff1a9f224c6a025b8aad133f. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QZES52219409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aef111d7efc8d0a4af185462ae333abb2c6ae81f8aa1c908ab389de6f83471c. 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/NLS6R1865102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4b3041db05e0e07062a9a990c191d493e5c9576cbef1b9d3d6e0ffd8b45adcd. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/NLS6R1865101.
Que bella eres reina del Cisne (La Familia Escaleras)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x803cfc052fb42a42f9e1d6e6277c15364ad7a0aa5756c6c7024d40692c15c5b4. Chain 2 (Bitcoin): anchored in block 958776 (2026-07-19T20:11:59Z), 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/QMDA72533619.
El Reencuentro Tropical: Chulla Vida, Pagando la Cuenta, He Sentido Amor, En Vida
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa135a19335ac515f8bad7b7efe3e12890edb5231fc1dbbff3ab4f482ef6e5750. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/NL8RL2562401.