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 0x843516ee8939e089078d553bca288c24970c7be7fbf5f4f05610ed4eb99ade86. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5d27f8d7-8bfc-4ac2-88d4-b00565433d8c.json and https://artists.proofprofile.net/proofs/artist/5d27f8d7-8bfc-4ac2-88d4-b00565433d8c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Automotivo Minoominah (feat. MC Magrinho, MC Bin Laden)
Montagem Forca Destrutiva (feat. MC Delux, MC Vitorioso)
Mtg Machuca Machuca (feat. MC Larissa, MC Maya, MC Mingau)
Orquestra Da Dz7 (feat. MC Larissa, MC Menor Do Alvorada)
Automotivo Celestial (feat. MC Saci, MC Gw)
Automotivo Gameboy (feat. MC Vitinho, MC Gw)
Automotivo Berimbau Perdido (feat. MC Denny, MC Mary Maii)
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 0x44f24f4e4793e50f64bd79d5cbc732612c41b838740dcb0d553225314230f721. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/ESA112435650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b27a5ac00a3ca7e613f37603b1b6f095e14e01933e26424668d55a5bae12252. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZPLS2511873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28612945694d3945b1578cbf44dc08fab1a2f3a6dda0a3772ff8e3f0e1b3515e. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZTB22542264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0186beab873ef1803e2c3ec9b894ba7d211ba01b2495de0fcebebc07242a7678. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZZ7R2503379.