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 0x3c7334f76cc08cc3a396c31a787c1b387367801b53f8090b85cf70117591e2fb. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/be88c9d3-6466-41f1-8483-8c6ee9d1930f.json and https://artists.proofprofile.net/proofs/artist/be88c9d3-6466-41f1-8483-8c6ee9d1930f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Quem Pode Mais, Dona Da Casa, Eu Vim Aqui
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 0xc74c409c5a799e379f31f38e8e4afd34d946daf64b80a41e15e0e8aefe8e8851. 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/BRQUI0300015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86d3725e8bd363ec86f4ba237e9585b8d4b64037b32c9bdd0bd59c1349f97943. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BRQUI0300016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb679d2a07713c7c26a1a35ca9a1657dbf5d3dee5b1aec7f9fe496bd1ea5e5d2d. 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/BRQUI0300017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cda17cc5f5db7f8725c955a350b8d39672930d6c09c87f25de69b0be3422b4c. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/BRQUI0300018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ff441f998c510f25000115e914a3a8ef15a617fe73f9c22448dccdf9f8e0c3d. 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/BRQUI0300019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x957a68107c4b0816281d680a2c564f5c4e7a069613ba30d2f75e22be7d102a6f. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/BRQUI0300020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc2597c487b9c4f7e08316313ebabceb699056fa844ae9ed8df68cc93898b4ec. 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/BRQUI0300023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab1368bd032c109a8e3b5d9e5d8bdebafed68eb2506c27805516c94a45c84285. 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/BRQUI0300025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71a23bdde71e1162e0dd0716cff6c9a9e973aa20184b2afd11ccb9c7d92b98e5. 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/BRQUI0300022.
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 0xbfd409ae6b89b469f13fa2a3f09664a42fe4bd1cfe5fd0f7b0d360d91ea0d4e5. Chain 2 (Bitcoin): anchored in block 960183 (2026-07-30T01:10:20Z), 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/BRQUI0300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81d16ac37d0304199eb159c2961edbdaf4003fc5b130e7992296ef90c7a30e0f. Chain 2 (Bitcoin): anchored in block 960170 (2026-07-29T23:52:38Z), 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/BRQUI0300021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ba4b64d37f60317088e51b245526dc0465f6adf1a8f3688fff10c5280d03e32. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/BRQUI0300024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28d4a4fbeecb11bdbc8c48668786ff90536e8514bbc6b79253fda0660a98659c. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/BRQUI0300026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98013d27efc76b6c97422da20b704eee38d016c7c1aab07e995a9fca6f3f67f6. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BRMPU2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde5a65094082602dbd47233342395b15dfec68ba3484188891fc207173f9bfe7. 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/BRMPU2300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7c6b26f83ae1b544f684bcfd8e265b54afbe311ab50ea556ceddb961b66753b. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BRMPU2300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0d4225f35fd67fbbf606dabaacb3a8862926bcd036c9b04b8341d92eade5049. 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/BRMPU2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c10a44f465d320cab585231add3a4d619d330f596acb496b87da786a7dd93eb. 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/BRMPU2300009.