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 0x01e8a56acdd7263fb8043662d9ee96db061df053d1b9373f03553d7322f410e8. 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/f99a3ee9-b93b-44a4-bd15-49957a1d8109.json and https://artists.proofprofile.net/proofs/artist/f99a3ee9-b93b-44a4-bd15-49957a1d8109.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 0x7ae3253ab2602f0f7cbac22a5f18d2454889ebb5fbe3fe71c31a5ea50beca53a. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZNJW2424676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4604485f9023131b1183acb09a5c323e06017eb7ffc17e713234876c3baf5211. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZNJW2424752.
Me Tienes Pensando Brigido (Intro Remix)
Me Tienes Pensando Brigido - Intro Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e971f32a9fc3a8204ee35f7259afabc1e31e0a97bc0dd4d072c6c50b7548567. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/QZNJW2430663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10a6e0b77e89edf8786d74342799dea8a18cc3a3d79bca3772c56fee47c1f4cb. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZNJW2436246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50d8621edd3984229d43d85b74e4ea90f96d7f3b0293cfe7958b1f56f0812754. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/QZNJW2455245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33cdc19f165865102525fabb6679b4780b8eede8cb7e8f299be55a9d2356a2c2. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:31:46Z), 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/QZNJW2450095.
Forte Forte de Lacoste Vs Baile de Favela
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd37ebf22baa6b35e6209ca6eddca4efc130a6f7544d543d387835d770bd578f2. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZTVM2401836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab0194c83f4deeb1d0657ef7b5c3dec5312c34bb80d9f62d43284d16da9e5dce. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZTVM2421980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ba7d3345866de7f62e9945239f05f9e1b8cef094ad848d7ea3830afc2756e86. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZW9M2424974.