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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd378177567136db8347ef2c0c4c989dd5332a4b33baf44cc874dd882f98c8297. 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/1b93072b-677e-4223-af9a-b2814419fbb0.json and https://artists.proofprofile.net/proofs/artist/1b93072b-677e-4223-af9a-b2814419fbb0.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Pío Y Pía (Canción Infantil De Los Pajaritos Hermanos)
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5eb0af4cc06327c42b0b43ebd5b23f9fbe192d04ee78ffe947aa39528b4c1b0. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCADG1784567 — a six-check JSON result.
Vampiro Tugo (Baila, amigo Tugo Pt.2) [Canción infantil para Halloween]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd74388b119dcd49a611c42826e57c5167ca025dc4a3cb093fb5413f07e9c784. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA71934853 — a six-check JSON result.
Canción Para Lavarse Los Dientes (Lávalos)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9301e89979bb3a0273f2726e4635f4fc1fe29da1213c4edba555ad17fb3763d7. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFJ2305769 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0618bd85895d7309f6676be8d632050c74b98c8371e55b6d64c9a46c162f7041. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAGN2248360 — a six-check JSON result.
Agua, Jabón (Instrumental para un Baño Relajante)
Viajar a África (Instrumental relajante)
Viajar a África - Instrumental relajante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8a54b00bdaa848365ec1e20a619b8356800a3ef329e26d154922989b15041bc. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFG2497245 — a six-check JSON result.
Duérmete, Nene - Versión Casi-Instrumental Relajante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ee1095daf59acca2b495888faf7f9894dee2853c5bffa7f1f45ded3f7fb7ab1. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMEN2494882 — a six-check JSON result.
Tótem, Ríe - Versión Instrumental Relajante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b306a491a893ae0cb7a68df6d5f1983a07f210398cac2564ca223e473708d3c. Chain 2 (Bitcoin): anchored in block 958487 (2026-07-18T03:43:59Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMEQ2458411 — a six-check JSON result.
Cucu-Tras (Instrumentales para relajarse o dormir)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x903fb53b8099729ef6ee2097554bcc18be9cec7e5adfade1d08a47fdbdb2689d. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFQ2489319 — a six-check JSON result.
¿Qué Tiempo Hace Esta Mañana? (Canción Infantil Del Tiempo Meteorológico)
Para Ser un León muy Fiero (Versión Relajante Instrumental)
Para Ser un León muy Fiero - Versión Relajante Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x377c1aeab2fb70f86e4bb67d0ad9ca9a0ebba80be0eaa91b96ccc245a0537661. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHNB2575491 — a six-check JSON result.
Rugir para ser feliz (Versión relajante instrumental)
Rugir para ser feliz - Versión relajante instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0e46fbbf83f58e6d413c838d27007318e927453f9f2b1edc1d2e95ef00e9e3d. Chain 2 (Bitcoin): anchored in block 958656 (2026-07-19T04:04:08Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWR2525367 — a six-check JSON result.