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 0x9ab54f24a9a120846c39306af0978fa0e292e15d4c2a5f53ad460f37769bb961. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/55c47e9f-a50e-4e1c-9159-35e9c0bf21cd.json and https://artists.proofprofile.net/proofs/artist/55c47e9f-a50e-4e1c-9159-35e9c0bf21cd.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 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 0x1c5e7fb7208edd189f3120569da30362463a8f989904e0f0ba226aea3064fe6c. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/QM6DC1538289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85fd2519e005fca0aecf370a10bcf04b296f167e1501cbc69b2ab7d2dc0bd3f0. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/QM6DC1538482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd94d6ba15d4fa05f8df879e4b76cea7f3fdc25d929cd1caaac367f5687020bdd. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QM6DC1538474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f945d68fcd61923a252bc4bca796cdfcc905c5fe0a822e08807cfa8312f4bf4. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/QM6DC1538475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b9525c8aeda66689fa7fc8b136e79e6378d7254dffa769a9676550fbdc09582. 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/QM6DC1538487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8919877d0bfc51526fa763fc7eab9a0678820bfb7e1cf99303619805e88d4cac. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T16:17:58Z), 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/USDXS2012295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x537b3437fce8ac5e02eef40c0ed103a75c830937714465e92d70d41f0f29e0a5. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/USDXS2012714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x883801776dc981f33c1637e076b2afd8ffb41bea8c87989b2369074e216fab09. 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/NLRD52021072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee4eb9bda204d27b206d086c4e75294e94fb5c07cc69b2b323a7b0e84ba71da5. 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/QM6DC1538187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x614054b8ec9b5c4cee8dfbc60a31fbbdbebe9e91d0c5465310eeb9a09a13f4b6. 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/QM6DC1538349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x585bd54c203bbe7b0524339d02a38b41ad371fe8e9a28255bc3285af62e29b9a. Chain 2 (Bitcoin): anchored in block 960200 (2026-07-30T02:37:10Z), 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/QM6DC1538360.
El Movimiento Alterado - Top 20 Corridos Delincuentes
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd965a3e7d6ed4f9e0d70840acfe8cb8e762ee310e21a5140f725b6b4db51ca61. 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/QM6DC1538590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b2e56e8804e88eb1aa55f8532ba1bb39ecf45ae580939470dd2b9ec6f1b66a5. 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/QM6DC1538601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb862a04bffa6d34c9277038cc85bbda7c3fd3a987f4b4088e7f8d91336658ae9. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QM6DC1538604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36a600de334d3029a9622dd78eb6da4c30d840f122d2442c14c9bff918da468a. 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/QZ9QQ2300880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef277f1f52ff1e11d55f40c17dd54a56b11651f4ea25262581d8141f27e1ec8c. 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/QM6DC1538307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5c77b2fed1ef9f54e3eccd7d6ce79ba5850b55a98651618e5a49b799af7c21e. 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/QM6DC1538194.