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 0x624f33b24c595dbc71f16f1356d573c5a94510929f439ab61277f8e549ff263e. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7289f352-fc70-41f9-82c3-d062850ecbe2.json and https://artists.proofprofile.net/proofs/artist/7289f352-fc70-41f9-82c3-d062850ecbe2.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 0xc417f4ad984519ffd625f70ea196a1ccada7c3d3f1b46aa453642d43d277daae. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/PTES11201204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa90c934698c6a0c64d446d6c453893055187c276666c2a2ef578a400cb8c5d5. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/PTES11201208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d66a3cb6a33b61a33014682716610e4c4ef2369e7c303181656260e071cfc86. 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/PTES11201209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18084fc8c49ff106c91352125def148bcc63ddd945c13c4d6e3e2cd6817f64e5. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/FRX281723586.
Gotas De Chuva: Sons Suaves De Chuva Para Redefinir A Mente
Chuva Para Dormir Animais De Estimação: Chuvas Tranquilizadoras Para Seus Cães Ou Gatos
Chuva E Música: Melodias De Chuva Para Relaxamento Profundo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5f51369e67a154bd292a65b72fbc694694c8a3f14d4a6a7396b02d30cabda58. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/PT2EO2300300.
Medley 5 : Apita O Comboio / Tu És O Zé Que Fumas / Zum Zum Zum / Beijinhos Portugues / Zumba Na Caneca
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ff9750147f5ab85c260432205cf39f6cba9eadd9e7866dbee383a9a2a0799f0. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/PT2EO2300313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x171e3bce6b9e97d112da20819b77737eac30a12755f08c15736a3b43a24452f2. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/PT2EO2500020.