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 0x3953663c6eb015f7095e68a93e8341731c183770c6b26e3a4404c33985487320. 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/9d421c32-a294-4cc9-b0ce-62bbf4eca145.json and https://artists.proofprofile.net/proofs/artist/9d421c32-a294-4cc9-b0ce-62bbf4eca145.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 0x88396251b9d60e9374a5506aed09509445c002af6377c672017b3e859b9e2d82. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/ES54D1800006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5db8dc20ed74f62b9d02e7a7f3091c7836d6caa9cbe34c3daf741cb6a651dd99. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:48:06Z), 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/ES54D1900018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcca9f5fb0472f5ffa609043a3c8407b2e6dae8b1c5f484b281f8697d84b9d29b. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/ES54D2000072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51d06cd8c4e1719892d8ed5d4fc7aeb4114f9068800c204ad7f1e18d37e91690. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/ES54D2000078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94a871f0ab637019df04b09e7ca764155382cc51337b77344caca9a728bf4ae0. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:23:53Z), 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/ES54D2100004.
La Cafetera (feat. Omar Montes, Yotuel & Beatriz Luengo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaf61640818bc3c97f87572533af62a112c0624024782f895b90088bd1975405. 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/ES5022102664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x163135ab19c3ac36cfc2eeac3c85c7c32a92c19200e6a9cc0a86f53c0cc7519b. 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/ES5702201219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x441d16dae0c9ec1b016e3fd6f0336b8077519e3de0afa8ec8b54ae5c831a3883. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ESUM72302355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa78c471f0a9d56e904b61b20dd31136a5a40f35532e4d98749f86801489f2497. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ESUM72303057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x417bea01f3e9d34c80397c21db45e2372f2ec77792c4f2c9fb7f4e963806be9a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ESUM72400960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28d58a57d52e09feb34973b58c53db5761db8ab89730c1babc2a2a380cdab9de. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ESUM72402028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f86e7d23572c7b4d5253e933f125249d99672153920eebb13e71ae487517680. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/ESUM72500369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc90c28d6aeb00011b615062aeb9e009a39833afc6972bbe85e85f503b2d09059. 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/ES5702100381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc651580e05a12f22cab44d5e79b8e76f6e05f7d01fbc2ce7111f016e992b695. 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/ESUM72301612.
Yo Tengo Un Tic (feat. Original Elias, Nyno Vargas, Angeliyo El Blanco)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdabfc6f7d82da30da6691540d8dbde240105657475ea264392c665db4bc3e119. 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/ZZOPM2223650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3747b3fc83ea7b51c2e5193344814c96e4e50ad2a042b3055a0ff2df94b66dd8. 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/ESA011636385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f71ccb59aa4f3733b65ea766aeb338de5f44a7b6bd484968771a04bd6d3e99a. 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/QM7282387173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8357f5b019f9456d498b63d9a89b1b5dc6e2b650360dd86768f5dcc989dc1607. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ESUM72301225.
Yo no sé nada de ti (feat. Original Elias)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52e64165b42105416e79d2d662f1833a5d01e6090f7dde8fe7eb1f85eb1ca084. 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/BK4DA2302110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14382176a18343ca7a7f8ca24ea71d876ef6ecf475c573e76d097cef29b9dfe2. 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/ES64E2306365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc833957fe9f2e4e65c2c65f09f24db83b365b775408d02d298fc399c2ec726bc. 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/ES64E2206362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56c508d93da6e9feeb89e930dab00fb6810195a1ed4773af984f28d275b742f9. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ES5702200971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5e9c0b6798492fdc439017ea93be697cc99e9910568a6183deb726e3110240f. 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/ES30E2000137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4673dca7c2b0e069d18c469ed5424f859200d49ae3b94989f5bd7ab3d11900a5. 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/ES71G2146321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc90c28d6aeb00011b615062aeb9e009a39833afc6972bbe85e85f503b2d09059. 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/ES5702100381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a40f19691dbdf042f278c1e32b044628fe33cfa9c606c8c00524f6e3c8eda9b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ES5702101702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x748928a6a9d80bdb5d28dea161d000e16140785b84e3d420aa62cccdbfeb5ea7. 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/ES54D2100010.