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 0xa05706c524323648ba50e3386d0d1f09666dfa32c93412e7594d9367e8a3a3c7. 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/a0ffc6aa-cd87-4326-8310-7409394e80cd.json and https://artists.proofprofile.net/proofs/artist/a0ffc6aa-cd87-4326-8310-7409394e80cd.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Os Menino É Ruim (feat. MC Pedrinho, Aka Rasta & CostaKent)
TÔ BEM AQUI (feat. Neew, GMeyer, Carla Prata & DJ Will)
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 0x41de7639dd4826068d49f64079df62774ab3e1429342e52717a75e1538657f51. 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/BXKLF2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7352774ed282ecbc61df7b63323352c1cf52089321cec799739e0b8f03376bf. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BXSPL1800005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6426de869dbde75e166c3636160705e128e20c93f32abafdcdbd70579db305b1. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BXJK02100013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa82aaf40c89cd71c22510f3e5a626b3f1742a93151e44858c91710cadd89e341. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BXJK02200029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe81b3330360d1ef642f26d7fb976d81b63ba184fdab67c5efab66b0aabe3fa19. 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/QZGLS2070484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58ae254f537a6e1d4b21899a39513651b3ec4a2c2233b9169fe5f809e83108b7. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZHZ41970534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e7c0b32071bc3d1e6bd2bb0a7c6f49c80046a080bde996f1eecea5c4ee9730e. 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/BXW6U1900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d1bea27e3e22a327c9e5f6e709c6ffa42e72b6bdf01a02023a43c5415fba79e. 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/BRRGE2102560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5446ba8ffde440cb11a02e3b305c7d1376ca9b9e53a43ecfc26b1620719d8fdc. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BREQP2100007.