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 0x21f88d7f89f1c6e1f1e39357e6d4cf488f532465e3dbb3384b66b17d232c3732. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d7d72f56-d5bc-43c1-9f8e-4462c9633024.json and https://artists.proofprofile.net/proofs/artist/d7d72f56-d5bc-43c1-9f8e-4462c9633024.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Mañanitas Con Tu Nombre (Cumpleaños) Con La Letra A
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 0xc23a9b359374bb468b371726c5382889b3a175b627c91ed058ce8ff8caeb324a. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:07:04Z), 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/USE831594929.
Mañanitas Con Tu Nombre (Cumpleaños): Parientes y Familiares
Mañanitas Con Tu Nombre (Cumpleaños) Con La Letra C
Mañanitas Con Tu Nombre (Cumpleaños): Con Las Letras D y E
Mañanitas con Tu Nombre (Cumpleaños): Con las Letras G, H, I y J
Mañanitas con Tu Nombre (Cumpleaños): Con las Letras J, K y L
Mañanitas con Tu Nombre (Cumpleaños): Con las Letras L y M
Mañanitas con Tu Nombre (Cumpleaños): Con las Letras P, Q y R
Mañanitas Con Tu Nombre (Cumpleaños) Con Las Letras V, W, X, Y y Z