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 0xf1554170f017ee1d79647f20954260d726128de32be025c130a923e6b5bda326. 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/ea2e5bc2-ecc6-4d51-8a0a-a2a1432337d8.json and https://artists.proofprofile.net/proofs/artist/ea2e5bc2-ecc6-4d51-8a0a-a2a1432337d8.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 0x5f1eccfede4c98ceac96df734c3511f11fc2527a01d48c96b8ccdec76a651df6. 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/TCAFO2152668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66db76308562ab130cdfd837d5535e6c34e81ce67ac8aad8b08ceddf5b8cef75. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/TCAFO2156052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ffdaf86d40d7be59122e2369cd8070b92760bcdfe369aeb1ef5e6a5f2d8ebdf. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:46:25Z), 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/TCAFO2156062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5b3241402561ff098868e6dee3c9dc7d04ff1853891de69d1830fff89a37d88. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:02:12Z), 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/TCAFO2156676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd136c04bab8d49026a9992fd739780c9db0ea9f09c94ecb56dc9f30c3b3c05d. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/TCAFO2156683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ee1bfa1e3637311d3d7c111327c1a277c433efd3131f3d67f09c1001c48a24c. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/TCAFO2156686.
Vete Con Él / Los Hombres También Lloran (Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfae86b592943ece13a9188dd260663db405c554a0d8bd1a3f046e233895f338e. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T02:14:33Z), 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/TCAFO2157086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21f3d76e99c71847fc2cf248cb55fbf2c3eb128bdf3ce60208d2d75a9398ce4f. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/TCAFO2157095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bd4342b1b0efdcc66860e7a22be4faaf81f10a1a2211bd7cf3d7f9843a73f68. 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/TCAGC2245999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa2431b0821852082cb61ddac16da0c26f8c48a64f9a14a1f5f2bcad43b4b3ec. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/TCAGC2246028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc56f73a5a316082181289a3f73514d47ba1d3680ba6bb254221513533d73587f. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/TCAGC2246049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa45127c106809581f065692ecdd0f6361375bd03c5b1ef66ee1aaed0cf8e5b3e. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/TCAGC2246076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d4cf869762b6fcede0f2804e86170fae3af5bb5d0113dce287f3d6b4e371039. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:32:51Z), 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/TCAGK2293692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96d3dd0a0a56ef18233ba35c586b42d7d986ff34968bd85a1cba8029eaa28687. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/TCAGK2293715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46c70fa087b66bc9f681a9cc20bd058ef99096b5f6b8b104dfc54afab897f3b6. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/TCAGK2293733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c17b177a51f85d7f6db42b44299e9f6ac2167b3e9a93e2cb317dc658d208d34. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:17:50Z), 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/TCAGK2293754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33b692c647c5a3b40a68bd23f92b902d7fd173d3206ad46bc4ac60539bc9c91f. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T10:50:06Z), 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/TCAGK2293791.