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 0xcaf29d3d614665b01befb7873ebd71d010bf2e8c5994fa6b625eeb9a944844bd. 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/37dd90d1-687c-48b2-bfe8-d00d1d5d493a.json and https://artists.proofprofile.net/proofs/artist/37dd90d1-687c-48b2-bfe8-d00d1d5d493a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Jóvenes Leyendas (feat. Di-One El Capo, Yeinomercy, Raw-Lee)
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 0x404a7e446229a8ee8dde16adef9096d4f29b33d12f57c6dbd9958045199f6a01. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/QZNJX2359629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5714ffd5ff90b86edf850a9622a4d060563e935553c672737c2971c2b1d9c216. 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/QZK6N2084920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe6ecdceb1c5ce69bb57ad5d54cb08b233396cbb14c1c3ade084ed4f308ba38e. 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/QZTPX2331198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b09e125e563ba745fbdba4af8665deb1cea9633790000cca05f97554ae2a1c6. 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/QM4TW2532671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf82c4425e4e122a559a57f55f5be4a1b0bccbc64857713f68448e03555626bac. 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/QZNWW2221192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37a2179ee8275c7e109017d4cddeb20a7ae310051d5232f92533d357597c19fe. 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/QZK6L2068779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb36109325326cb2ec96518b8763b54b851b73944351b72c76b8228a5a24712ae. 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/QZFZ22316764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x404a7e446229a8ee8dde16adef9096d4f29b33d12f57c6dbd9958045199f6a01. 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/QZNJX2359629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08174bcb2d5458dc5af93430d05a662e014308a4746684542b91376f7e60bc54. 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/QZNJV2348538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcce8ee1bd1e0d188f810590ab53f3943c7dc05a2503f0c2157715e2d14eb4b72. 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/US7VG2439984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34292496c81331d4bd19062e31efa9afd85fe6144afc27fd3f52b9d5fb708c85. 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/QZDA52182974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b8f0f41c752e48a8f49ca4c092d67dd223b86b99ffa3d60966e32153293c160. 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/QZFYW2065487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7892d4f9681941c32b76766036c4b60761d89cfd634ee5b261427e95da1e94dd. 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/QZHZ42178167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcce8ee1bd1e0d188f810590ab53f3943c7dc05a2503f0c2157715e2d14eb4b72. Chain 2 (Bitcoin): anchored in block 957287 (2026-07-09T09:48:29Z), 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/US7VG2439984.