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 0xde3ecf1d05e4a14fbcadfd474ae7b7c1786977ffc13beb6dc9fc7a6f67a8ad8f. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/48992d3a-dd92-4a51-b302-e7860b1c4e33.json and https://artists.proofprofile.net/proofs/artist/48992d3a-dd92-4a51-b302-e7860b1c4e33.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Armonía Contemplativa Del Arroyo: Coral Tranquilo De La Naturaleza
Día De Trabajo Tranquilo Con Las Gotas Del Piano Lluvioso
Refugio Felino Con El Piano Lluvioso En La Tranquilidad
Enfoque Del Piano Lluvioso En La Claridad Interior
Rapsodia De Gotas De Lluvia: El Piano Canta El Ritmo De Lágrimas Que Caen
Enfoque Con Piano: Melodía De Mente Aguda
La Armonía Del Perro Del Piano: Melodías Relajantes Para Mascotas
La Relajante Armonía De Piano Para El Perro
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 0xc4af319a197d3c80154a756d61788638a4b55a2576af512a1eca5b4c51c45f31. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USLZJ2499767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa857e930478393b0eb44dac9d6a8adc6ddf97344ab18df7caa5504f5a962e2b9. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/USLZJ2499784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd18af62677a89b34330882392d9437d2d6787c6f5725c0abb519a734559417cb. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USLZJ2499817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb1364cef742820f4289518c7be21bca8286f10d9de8f6bec3a397045754f0ee. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/USLZJ2499833.
Paz En Piano: Melodías Para Una Relajación Calmada
Soledad Del Piano: Serenas Melodías Solistas
Reverberaciones De La Música De Piano: Ondas Sónicas
Aventuras Con Música De Piano: Ritmos Vibrantes
Felicidad Con Piano: Melodías Para La Calma Diaria
Cadencia De Calma: El Toque Suave Del Piano