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 0x28754b689a61d0298ee7d246e0205cd5ddfb2e79ccde84df1d025b12ab4ae4da. 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/f95f90c0-db73-45fe-8138-981b63f2ada0.json and https://artists.proofprofile.net/proofs/artist/f95f90c0-db73-45fe-8138-981b63f2ada0.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 0x11d6f7c754049b17adde9085cfc334e52608d82f74b1575015fd9813faafaaf3. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/ES71G2043252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10ab0da927c777620ac1696ea6c3ac7c3ab016359b0d8ed6ef7cb9f62ad2e4a3. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/ES71G2138470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f6e8d469774686bb6479dd08e9687416ef3e60c52f410ac0851ef5672a88f29. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/ES71G2138472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf3a9dc79805e965bcc407f49572e2cbf845ae34d1b6c6e44342b66487766911. 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/ES71G2138476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x428447f11cd3e81c5207c7d1fdf6afa70e1ad7dabc5443c72474b6f8896afb42. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/ES71G2138508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccc8b3526141ce9e2962ffd97b251a45e5dfe5bfc4b1a66b012eada0ccc79cc0. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/ES71G2138509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8c23cd94335c02fc79c2ab4b64c4bb7ebb7246d7b93ab2f6ff4d63eae2664d5. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/ES71G2138510.
Carlos Alarcón y Sus Poderosos Genios (En Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb10bf5d88754a99be6cc042dae96ef0fb433aaaff7ccf9db5ceb4eb2c9f0ce69. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/ES71G2044288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32187e09b899f9363e136e3e79c12db09df76b4b560d1811acd9b1c04377ece2. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/ES71G2044289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6901147f3d589fd4b6c5c30a80cc9d1e708d308b26a2a2166ef795c6f0a3b3bb. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/ES71G2040244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cb8a023576af1a95db868fcd979ade7a0351fb6e7dd1b8973c64799a6828e72. 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/ES71G2041194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf83ff268d2765019a5539fc29ae14cc2c527e30ae7cea7765bcf352e824d1546. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/ES71G2041197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d929a4a4d69e163dbe15288cb0cfbda442e203b0fb32e8bed3c6d42172e08c5. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T13:10:36Z), 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/ES71G2041199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38201c39ff1528bef74d1e041a89385dad970599cdf866df1ea8384b1a191b83. 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/ES71G2041198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeffebee78ed7f400815549a3bd7800851c1da12e9679d47fa492c97d795a0cf1. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/ES71G2041184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaad08fd09deb96a81a1110f9a63976adec2bf6e13f2f48472b171aad04c6382. Chain 2 (Bitcoin): anchored in block 958889 (2026-07-20T13:24:39Z), 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/ES71G2041190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20f8f3617df234b06de989f30b2c3b574322435ebc4aee936f0a29549c41fd2b. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/ES71G2041191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe18b845077d20eaf932104ccc631f3bac07f1ef6e87e3c096faaf35d64aa928a. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/ES71G2100561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8d0b2a6b5f66b8bc8c34fd4213712e1c9bc32da88e68290faa9562d1e2d2534. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/ES71G2116699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15e4bff59077b3b2ece8aba56ffa8d9bb29358ef7eabebb7eac5a1fea02886df. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/ES71G2332157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc45ea87cb9deb447031c38976fdb7c04b74e13eb106720fb47727dd77eaff637. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/ES71G2339130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0940e7146778e3eca3ebf1d76463513b0988599bf7a872c79a06fc9c4b545fdf. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/ES71G2412586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63266d775eed2f4736521b98140968bc35140d1ceb4e669378ef51e1c6214263. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/ES71G2418086.