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 0x42933f38928959260ca86c8a7fe06410d97817b6c905ec1ee5a058e0deaea42f. Chain 2 (Bitcoin): anchored in block 953727 (2026-06-15T02:33:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8fcc4fc5-6926-46de-a31a-c7d18a2a5853.json and https://artists.proofprofile.net/proofs/artist/8fcc4fc5-6926-46de-a31a-c7d18a2a5853.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 0xa5a5bbf6dd1bbc9128fa34e9e7d5fb1cb0b20dd5c56239e5b5e670afd0d8ddd1. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZNJY2110272.
Flor de un Día/Lávate la Cara/Loquito por Ti - Cover
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf77669669b4f297712555168398a046b6a5caa3808e51de5c8afaf4d66f8f8cd. 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/QZNJY2110273.
La Conocí un Domingo/El Cuarte Tazo - Cover
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36c6ab7275bafd9c0f5d857e4aaabe70bbc213ab9a4ef2a9535f1e81c33c3a11. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:44:23Z), 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/QZNJY2114902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bfe8c8509b45f60f32a2a31a1d4998ef4a75d5926c819106bd92ae1b312d666. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/QZNJY2110275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c5de535039383a6f74730540f175171cbba8e475320d9590f172efd8189b15d. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZNJY2110276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x743d084a124c7119352a78226b8cd61e7588a71b1bcafab1a320db588628b5af. 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/QZNJY2110277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x531ebbb4421f09274ca4bc434782974e908b2e88e7268c650ee73f0c910ee352. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:28:38Z), 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/QZNJZ2161625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf0c7e976a3340fa9e096b7f0d021d1dbb62c0e03862e8990910ae2b19d0626e. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/QZNJZ2138128.
Flor del Bañado la Finita Milonga de Mis Amores
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15345a73d419b3970b14c85d92ac1ebf581af8eec44b9b18b1d0123a0081436d. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:53:01Z), 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/QZNJX2209031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaddc4769a9f3a0a3463b533cce113053be3e14a2ba4dff36877b2924ec92c384. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZTVM2219503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ec3c01e10c661238a622601aa9264c5392e0d1a487e686e6833d06c8ec17f19. 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/QZNJW2361286.
Niña Bonita / Boquita Mentirosa / Quien Se a Tomado Todo el Vino
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb038ff018e59446666544bd99e752a0fb0ac651d8e68766a9fb77da528a3f9eb. 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/QZGLM2593448.