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 0x8899a9d167e467af60eaa1aa61c080d480e3a2375e82d0654a8f7d36a51e818c. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9a9b254b-2339-430b-a0f9-b96d3c7843c8.json and https://artists.proofprofile.net/proofs/artist/9a9b254b-2339-430b-a0f9-b96d3c7843c8.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 0x7fdcad6b6083155d9265a3206fcea9ed74733ff39757c70e0622c2859dc146eb. 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/FR9W12041295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe20f64e90b504fba2e8ed757998cf50fc474653e2277f4914e366a9962996444. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/FR9W12119000.
Briganté (feat. Hornet La Frappe, Da Uzi)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1e9b399c04508273ac1b61ab888b24bd2504b9c42a8bb952696fd80d0aaacb0. 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/FR9W12210637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dc3757bd0d92a3c4f811182716bcb3f1736ed8e7dcbb555388f48eadce05859. 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/FR9W12222800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e9bf1adc1f547064fadd63046beb6990b1bbaf0d3a18379898863aa00750a9f. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FR9W12222801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd258e4eb1f2897337c4e30d5fa81b1eca93836c14df29d7317a081ff1d0e42b8. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/FR9W12222804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea67dfc64372709986ae46293aa2cb6bf2bcc3b4cbd5a2578697da1d842736b2. 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/FR9W12239841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1533e0ea0388b23bad7d30299230b1f4255b6563e0ba78d4e71658f1da221c7. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:39:43Z), 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/FR9W12247131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x386b3221a2a7f987ffe616f87637d836eb86a12c518b637a4ae2ad0828b4ba85. Chain 2 (Bitcoin): anchored in block 959015 (2026-07-21T16:38:43Z), 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/FR9W12315545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dab5c38aa4d3d058f84ab761471c1b29e7c2bbca6ed0ff516a93f398a33176a. 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/FR9W12346718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20cd9c05a2b46a0c00021a4c0b6dd44d6055189fa42e9ad35bae835be012c915. 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/FR9W12346726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a0419533a6ee8f1845bb205ffe44a8b193cf012cba644e4f009666b47e5d06c. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/FR9W12346715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d07416f04989e00e589f8e72db938dae611b5a4b8b41806ed914344eed67507. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/FR9W12346716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c541815c91a52b6da0f04b34a7536398c4d38f95d07faa37ccbabf68a510ccf. 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/FR9W12346727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dfb423e644f02a3eec9c17663f07a7357c75b46d5db0020ca6233bb8721dd9d. 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/FR9W12346720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27cb1cd20d8fa4cfeb301b35a6c133c772ce24b650e39ba7ed16a7bbf03b81c3. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T11:29:34Z), 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/FR9W12346725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e17b12230c8088f41d11b306530e596302920180cfbbc15880c16bf62e995eb. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/FR9W12346719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6ea05e349995dc7854a6381a6a72603f5f99cbbdbbcc95a94b64e50f6fc7e2d. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/FR9W12435541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x798a546ccd02d3a80983b04d8faeb7238a5fcb34d107429b1f78b78c05c3c189. 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/TCAJA2437912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ad0246c7f0f54840414c98d8ed9ebc9f2725b1205f7f7c3609ce3321224f862. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/TCAJH2587301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb519f28fe9bc010ca25b2b8fcac0f2f1caa6d77685005a122ed16750eaa7d7f. 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/FRX201802689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xace94fc71889a117a410785132c79c5610ec274489d8f515e209e9281fc29dbf. Chain 2 (Bitcoin): anchored in block 957012 (2026-07-07T08:27:05Z), 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/QM4TW2264691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xace94fc71889a117a410785132c79c5610ec274489d8f515e209e9281fc29dbf. 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/QM4TW2264691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ab728c19f22c2ac0007597ed4cbfbd80a8ed393011c4ddc607a5a8d0cb2c1e6. 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/FR96X1958832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdcf3c5ee72254c3c68f520c4992a5a02c0f4b2671a4e1a87c311726ab2de8a9. 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/FR9W12448959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc35a48000f73109fbfb661c679b21c3934f6236566cb7476785f80e9c6a6107e. 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/FR59R2547809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc35a48000f73109fbfb661c679b21c3934f6236566cb7476785f80e9c6a6107e. 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/FR59R2547809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34357254fa770b5b52c3cbbebc9bf4414b6e0f521596282bc9570d16f62773d8. 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/FR9W12530104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34357254fa770b5b52c3cbbebc9bf4414b6e0f521596282bc9570d16f62773d8. 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/FR9W12530104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84d39d5fb860bb053deb1d01c36ad83e4f76fc9c7e7c592bf0da8946423e4afd. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/FRX202227093.
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