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 0xe4dbede94aecad15792e5601a01b59890348793c22bacfca76072fcf154a80ce. Chain 2 (Bitcoin): anchored in block 953803 (2026-06-15T15:41:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ed51ed29-a981-4b55-a665-f7b6bec0628b.json and https://artists.proofprofile.net/proofs/artist/ed51ed29-a981-4b55-a665-f7b6bec0628b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Melodías Aladas Aves Cantando a Orillas del Río
Sinfonía Aviar El Río como Escenario para el Canto de las Aves
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 0x08fc814bbb17dadd8eb8c2cfaf3a3d53733411cede33e048b97aba33c0ac7130. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/QMANG2247132.
La Ópera de los Árboles, Aves Protagonistas del Bosque
Armonía natural, aves que te llevan a la calma
Aves con Sonidos Relajantes en el Bosque, Sinfonía de Vida
Aves en el Bosque, Canto Antiestrés y Relajante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe64e596be8bcca0ffdbceabf4effd210c5775d76723cbb368a3c72eda21ef9f8. 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/USANG2494530.
Aves en el Bosque, Canto Calmante de la Naturaleza
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x332ffe364da40ba53a038991bdea497aff43c77ce9e86d9c9daed6e59e66eaab. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USANG2494532.
Bellos Sonidos de Aves, Río Fluyendo en la Naturaleza
Aves Cantando en el Amanecer, Melodías de la Naturaleza