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 0x9b0f65b0660bbf6e8d44646d24a2f8d7a4616e231a56f193c9381203db45815c. Chain 2 (Bitcoin): anchored in block 954072 (2026-06-17T08:43:15Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7a7de258-191e-4af5-bd6a-fd1cdc9cd122.json and https://artists.proofprofile.net/proofs/artist/7a7de258-191e-4af5-bd6a-fd1cdc9cd122.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0x35523ca307e01b8beef3209cc2500b4fd43b6ee9d9f0e93cc3bb240b7d63ad45. Chain 2 (Bitcoin): anchored in block 960422 (2026-07-31T15:27:29Z), 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/BC1Z22300003.
Embers (Diego Santander, Erik Vilar Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x149d7940e4cdc79d4984a1661894ecd4ceec783287eb9194069e40c3e50aead8. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/BXTJO2200071.
Faz Parte Do Meu Show (Remix Radio Edit)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9de01dd2246437f9b226817b24005712e16e21da59412dd380ce1804186fe4c4. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZPLR2326177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1ff4549c51f08bc1fd86ce9f1f8e212e99c6d89cb0e7f7b2d81e8dd69304ce1. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPLR2326178.
Illusions on a Dance Floor (Ultimate Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x067c866d03138794c7c30a35c1f2bd022fb1c60b8306158e350a68d89f1e894d. 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/QZNJY2245703.
Illusions on a Dance Floor (The Remixes)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc09e728a18f52d365fabd39027a09668fb9b2adfd46de955ba14493196e70865. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZNJX2206207.
Dropt Einstein: Just Love (Davis Reimberg Remix)