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 0x86b660422e1c7a8d37a7ad2a7cdf2daf1b23a52cd82f3531693a1f27f349165d. Chain 2 (Bitcoin): anchored in block 953786 (2026-06-15T12:56:12Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d78bb2ea-ed23-4206-b2f8-ae1584e70430.json and https://artists.proofprofile.net/proofs/artist/d78bb2ea-ed23-4206-b2f8-ae1584e70430.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 0x125ceb8bb8f9f773ff8b831b124f17c4069820887664d35be10c531244995499. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USCGJ2446447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03e0a346992b245c5d8310db904b37613c98100fd2e0464fc22221f6f3ea19d7. 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/QZNW72392818.
Setmixado 001 (No Piquezinho Do 130BPM Beat Serie Gold)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3f1ba9fa0191b5ecafeabd4450f5de730ee215b6b1c048072623bbffb246f82. 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/BXIV82368287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e13a1fa2dd7a2abe8c021333a33f70af493676fd67387b1ad738ca6e0d7bdd1. 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/BXIV82312832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc13fbe35328705a0e27019a4af405a272915bb3bb0a73085c3c28740dec26d24. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/BXIV82352549.
Sequencia 10 Minutinhos de 130 BPM Beat Serie Gold
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12ad74d0554aba288fd8a2f7e777a90201144b76ed9bd621c50736afb7aff989. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/BXIV82223011.
Quando Eu Mando Ela Sentar - Faz a Posiçao
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ebea5fa092a8e582578ab4d4b542a734b92b45b11f6812eb823dc07f4906dd5. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/BCIH82214874.
Porradeiro 003 Grave No Máximo - Seja Feliz
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x632dfbba60413c6473ced13982b63a38200d26d377d02465fe95868e1d337761. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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/QZXLZ2346023.
5 MINUTINHOS AQUECIMENTO PRO FINAL DO ANO BEAT SERIE GOLD
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fd642c0b0d4f05d495b2514fc6846c29e79cf2967c307a07363407bed271b22. 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/QZZ7K2498409.
10 MINUTINHOS DE MUITO GRAVE BEAT SERIE GOLD
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcce12d7ffd1b978b8c6577770d8ab470d585e370dd66ed742ed08e6303b33d41. 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/QZWFS2497981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc41432a7367d4dcf1c18b981ece58b9b0dc9e9819f8c3e2b822b64724394c14. Chain 2 (Bitcoin): anchored in block 957067 (2026-07-07T16:54:37Z), 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/QZWFN2452209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ff0ea2c98ec823d25ef49d71ba03265b3cad47aa818b150176a53e8e8a7d0ed. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/QZK6G2302370.
Não Quero Te Ver na Minha Frente (Remix)
Não Quero Te Ver na Minha Frente - Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x454275b807cfad6b742d235a1abeb033ea77827a70ef8f490ad3f8de3507dc60. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/QZ5AB2407853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3a0189f6ae0597e6c4fe45e445698cd671caaa62562680d50bacc2c3209043e. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/QZ5AB2406355.