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 0xb1e7eff0b9bd376534ceb9a2e16e03d9988110138bea8d6663c9996ccafc32aa. 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/83b7cb4b-bf76-4ade-bad3-a8c87e60df64.json and https://artists.proofprofile.net/proofs/artist/83b7cb4b-bf76-4ade-bad3-a8c87e60df64.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 0xd7995b23071f244c961946f4932e0e1a2d03160b3955eae6514864bc609033ef. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:18:01Z), 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/US3DF2102497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x669677ebc0ab90cbb97dabf7176915151af73e4e530d49748b97ae37895d0ed4. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/US3DF2131003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x845197730a1437183c27ec8f8ac34df9c6cfb906ef47b9f91b5a5bba217e87b1. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T12:28:23Z), 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/QM3DF2179293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c289e7a1e3edb807bf79d9945939f880869ec70c52b4f7f00358dcfc0fa78a6. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QMANG2284458.
ATIVIDADE NO BAILE - AGRESSIVÃO DO MOZART SLOWED
ATIVIDADE NO BAILE - AGRESSIVÃO DO MOZART
ATIVIDADE NO BAILE - AGRESSIVÃO DO MOZART SPEED UP
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ef240c8d9583845d3350f9856bdfba591d40d869205f0d4b13a9a7eb5956daf. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/BX4IU2346655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9b34f6e1879940aaa60c18ada56972afbc9b1ccb52aad9ce8203f4e92b6747b. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/BX4IU2357639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06b1af607d36fa37f66b58da2dc3185efe7963c0992bcd98312a3706ded4bca1. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/BX4IU2402881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfed8a32d1a277ed2addebfc7bf7d7b32c7bebc398aa6c81f79c15fd814c83a33. 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/BX4IU2416224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x764f7a92746d185d4916378f0b41d5d47575760c6f4b522501fde88c4abb91af. 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/BX4IU2416974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeb354f7382c405c88527feb562255e6eb8a3bdad6af4828fc7cb770f866b25e. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T03:35:05Z), 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/BX4IU2418700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f0bd1bddc75b37815f2e2597457e21581a0b2ba78e9b17aa443b72d7af47535. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/BX4IU2418914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31935d9e3489a295d7fee577831150810ac60c770cff5f418662a658db1642c6. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/BX4IU2419112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x724b43612ddaf276f118af6c157f74299196537731c5239f7d5f2031ac9ff828. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZGLM2583426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x197dfe4ae42bbc0082424179a911172d132e815b472e045d54e3a2bb3ddd7963. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/QZGLM2583425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04880f32e9a0fd1829166be5390f10597b89188e67763a8e6c9222564080f9a5. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:57:39Z), 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/QZNJX2512673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd86216ff105e63f93f009a270a752b7faad6823d39866918a3cdf6fd666cef1a. 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/QZQ4X2400442.