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 0xf9676dacecdfa843efbfc29d3b5974090b9cf63b069403173e4dca6f6fd7d20c. Chain 2 (Bitcoin): anchored in block 953633 (2026-06-14T12:47:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/325baa68-8e6b-40aa-9a37-fd1b4d4e0dec.json and https://artists.proofprofile.net/proofs/artist/325baa68-8e6b-40aa-9a37-fd1b4d4e0dec.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 0x420bf3d7609a5762d6f52e80acab96f92901696b9c530e10b85115a1f8a46261. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/BRLRE1900053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5e6e39b0ff1561e3a9f50de30661da9372819a9bfc27eb1ccbee4a5c9b81c06. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/BRLRE1900058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86bb7a74a87ae71b7239708df2dcbb68ec7292a52f4ba2adc4fca1f4ab7dc6f9. Chain 2 (Bitcoin): anchored in block 960383 (2026-07-31T09:50:37Z), 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/BRLRE2400293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf64a5c375970e6b09e01c21460f48cc02f18d38d98de1d2e7081c57bf8a78807. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/BRLRE1900052.
Spring Love (DJ Vidal Radio Teknobeat Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b6c71b8d46c38af9d7e8f0248b231043fa447040a7f2a82860ed40ef9bdd860. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/BRROV2100001.
Spring Love (DJ Vidal Extended Teknobeat Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x790f26ded374fa3acf2c8a395cdfd5cf3fc2463ff00c4aa107d8609ba7ecf022. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/BRROV2100002.
Heloisa Mexe a Cadeira (Teknobeat Remixes)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22717c8bdb18e81ded0fba7339ae9229cc6ce2d194489247b94c0e6618fa71bd. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/BRLRE1900040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc957f22f99250677ff684e89f0469bc56b46ab1551c858f82fc7524c19a28232. 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/BRLRE1900038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb824572bb3607e0c0bfa5860eda67086347cd1a5487284321473a31f597f7980. Chain 2 (Bitcoin): anchored in block 960381 (2026-07-31T09:50:11Z), 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/BRLRE1900042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb16095155c08b49278f570bda3b844689e8c9ac3726b7d34b7ce062e13e427ad. 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/BRLRE2400147.