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 0x0e5bf539ee21e24b672b52038b1116730f1958b33fd1477f57abf5a49d5bd623. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/eb5b9dd6-e913-4cf7-80bb-f238d458c01f.json and https://artists.proofprofile.net/proofs/artist/eb5b9dd6-e913-4cf7-80bb-f238d458c01f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Música de Ecuador: Hasta las 6 de la mañana
Pasillos Tu Duda y La Mia / Mi Primer Amor / Vuelta al Hogar (Mosaico)
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 0xf8b9a9f17416fc1be46be6e58e0e63a1f425da0ea45afc5b7bf91c9e37c2c460. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T03:54:27Z), 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/USA371105878.
Pascalles Paloma Errante / Apasionadamente/ El Mendigo (Mosaico)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6b7cda4d49b9f8d44dd3c9bdcefcba46d63f98428cd9116dc4dde3563c1da77. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/USA371105883.