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 0xd8e54c73b3d9d3ef129ee3619529842b1f4f8c1b94cf8335eda0f42d21b3264b. 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/1b77668b-1c03-4bd3-a29c-585012d59210.json and https://artists.proofprofile.net/proofs/artist/1b77668b-1c03-4bd3-a29c-585012d59210.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec015a515fe47f39d22220a61587a1fd7265be2717b26b7496f7320f337bd99b. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/QZEQU2050898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa85381cd4cdd7850b471752a8eca5ccaed0380355ff96735607274fc12faa63e. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZEQU2050899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44de71b42f1a467be7185dcd35ba1bdeed91269b34dd843c410ab565fb3dbe49. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/QZEQU2050967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdfb3d37e0c7e1e25750e3785f2dc6636013f64b60aef30453bf954af2389c02. 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/QZEQU2050969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0f5994bd5924e03fa5071318d9a76fa96cde1ec1105efc32fabb62654aaab69. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZEQU2050970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x316e8f4f8004131270e1f320cdc00317fd18eeeff6480b05e581ed200c67ff7f. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:49:04Z), 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/QZEQU2050971.
Ferinha da Bahia, Vol. 4 (Ao Vivo em São Paulo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb668e84a59799e49801b713b277a1520703ae6d6ff78c9aae0e425f9f892106e. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZEQU2051433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x970fcab75d3a0c09fd672e884a7e198abc576eaad8b7f3f9c9c49da98b95524d. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZEQU2051434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x830945f81815bbdf0ca995a27469d3d1b6bca956af2e69fe31a69024265069fa. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:10:46Z), 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/QZEQU2051435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x367ad09a92acc7e34473217430117908eb4af16d4d35dc9381a1dc12902a012e. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZEQU2051437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec94dd71ad53b50c225fff0d50f0ce81c862fa28217b5898f96aa9d3fc1e67f4. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZEQU2051497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a2d5046b7cbf546d954741f09a9e918635a2cfea0d230ebf53df2677baad83a. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZEQU2051500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55c318f069f0449e0139a343d70ecf392329900624267a6eaaacc2229a3e8a00. 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/QZEQU2051502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2b35e3cc80095a43d39939500ed77985ff0bfc145ff50fdd135f4a91c2e46ae. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZEQU2051510.
Receba: Os Grandes Sucessos ao Vivo em Sampa
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc823604a963e6f60a1cb448634d2791ea5a193d3e5f5679a6abffb3325a5383d. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:12:35Z), 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/QZEQU2050477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x751c428cd5aab129b619e08973d9b2053c8aff6e532bc5a23d86521f2e559b61. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:43:43Z), 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/QZEQU2050481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe132a1b72548e6c2143769f2dcb88f0c37cd0086285a713184605353cee4b5a0. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZEQU2050483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79df134fc55af0d3c491f0e0c10ccaf51dc1896140a216008d9e2566f5dc01c5. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:37:25Z), 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/QZEQU2050485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x065fce5d3cff80462c89883099bdcd58762883dae924515292570b0b50785b93. 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/QZEQU2050487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd932e471e7f09b6ec3175211beb0f0b9a5d6abe2970cb2f2755d43a629d55b4f. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZEQU2050492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8b6b898b96fd578645025ccda649e76e00d92d70e432a792afdb6d6cf364fab. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZEQU2051866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95e02b3184005580003582cb529d5da6cc41ea8a6c69590ffcbcb2c705850762. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZEQU2104194.