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 0x29fa15913500d681bda326ad5b11dade6f232094ae2aa5f9f11aea3069dafc82. Chain 2 (Bitcoin): anchored in block 953704 (2026-06-14T22:58:38Z). 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 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 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 0x022f00b10327b965ffc8d2ca472316c465451b79bf7e83a9e5ddf64c050253f0. 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/QZTVM2421361.
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 0x4c10584d020b80351423fb24cc01492eb7ad021519a4655256ad84d775f62d73. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/BKCE22400044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb7fc3be9708c2db65bdea34f423fe187ad3264c51e92168c9b0c88e1d2ed9b4. 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/QZNJV2511113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ae303a6083ea9d62e5b08fa13f3c06eb2460196e942efcd0237f9196dd0c974. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/QZW9M2406082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf269ad39a8724eb0d0e5ffa4b75e91c948cc6c80a24c25d2d2fe1336e7b889fd. Chain 2 (Bitcoin): anchored in block 959138 (2026-07-22T14:10:55Z), 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.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9da1269c532098b9e9182f126ec680997f1bba56940fe8b83341df5fa720c3e3. 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/BKCE22400054.
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 0x66bb8237bbea50fc1cf7befbc24c14c8006d433b7f2ef96897197c9ab9b39a93. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/BK1NP2400015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8cdfb2fc599d191d7f900a00db0baefd930b5a398c404e8e492901a17f5f324. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/QZTPX2417086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x517f62fb1cd1c8abb9ce7616a30aa2cfa86873d4aa314dbb0cadba7b9cddeb44. 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/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 0xf34051a66fc5cac16e53fff2c830fc5ddd5fb6848400a8ea66ec96f436c74901. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/BC8182300140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e7941a87663e106abf1deb775de6e0295e76c4003cd601aabb16c12e2dbe973. 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/BC8182300086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7fb3ba23fd1163b15d265d0cea5f560acf2c0db08fec9638fa79b2f85e81683. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/BCENA2200012.
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 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/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.