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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29fa15913500d681bda326ad5b11dade6f232094ae2aa5f9f11aea3069dafc82. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7a087256-1f1a-4ec3-b7d2-183324ad5839.json and https://artists.proofprofile.net/proofs/artist/7a087256-1f1a-4ec3-b7d2-183324ad5839.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Chamando No Grau Sem Deixar a Pistola Cair X Trenzinho Dos Traficantes
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4111105a15b42e7428dab465cfbe9ef9e62ddd546b79385efe8aca4afa8605d0. 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/BK1NP2400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7436006dc5f4d20f0baedc808ed5591dab6f9e05e560c5fd7860082b79b0c11d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZGLS2594967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa942df3e053cb83e688999ab0817ee06ee8d62729246fbc9670a7ce17aa8765b. 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/QZTVM2418159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb7fc3be9708c2db65bdea34f423fe187ad3264c51e92168c9b0c88e1d2ed9b4. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZNJV2511113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9da1269c532098b9e9182f126ec680997f1bba56940fe8b83341df5fa720c3e3. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BKCE22400054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf269ad39a8724eb0d0e5ffa4b75e91c948cc6c80a24c25d2d2fe1336e7b889fd. Chain 2 (Bitcoin): anchored in block 959138 (2026-07-22T17:03:01Z), 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/BKCE22400052.
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 0x56551d08ac6329751556ef1ab065758b0708c418a1c8c6de71ceabe2a2ae7f5a. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/BKCE22400055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x517f62fb1cd1c8abb9ce7616a30aa2cfa86873d4aa314dbb0cadba7b9cddeb44. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZTPX2408689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59ab2dc0128875d395bc8ac2eda3b54c16c0d460628c8fffa41cdc9bc4ca39d8. 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/BKKBO2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e7941a87663e106abf1deb775de6e0295e76c4003cd601aabb16c12e2dbe973. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BC8182300086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65c559fbc7e608f3abefdac4f2b23ee428a91f7d696f64f07978cd4e5d6c6ad3. 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/BKCE22200019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2ac7ef3a5a5faa809a39b926eab4f99a5d065a2504d5ce32fb422df47ddb9b5. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZNJY2377892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12eeb8098f921818f0625280ecd865325d57f22c28c8e1c839f5cbe496c864bb. 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/US3DF2298933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefb3894aece061122d3bb5056210912b95cb9fd53bc344e952c92328c5dc614b. 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/QZW9M2445613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8f9fb765f32a949f8b7d0937bc7366c5d231419274a0e8d7404ce2220a9a424. 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/QZGLM2585059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88353a2332740699576f2b505e0e3f338cdd462ccc5ce78c24d460a78f2f3a9d. 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/BK1NP2400021.