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 0x1945d29220467ff37c2813337f5c10771b1443a2e2b06af0c10fe6da1af02843. 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/b59b771d-6c31-4391-ab67-b3cf0e9cd876.json and https://artists.proofprofile.net/proofs/artist/b59b771d-6c31-4391-ab67-b3cf0e9cd876.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 0x8a8668dd21c636ea8a7d0e989fd45bfe99a7f0c2b56a9fa3e965da36bba927eb. 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/ES6100921508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cf49b72d274a1e2da320e7b4722d445d65ec4887a40e5052d042634a8f95681. 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/ES6100921516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9ce2b0ce9c7ebcb2ead23a499e51f083d06c659169939260ec54be493f927d5. 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/ES6100921520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x416d620094738329020f224fe25e72fcaff68ae22ddb23d86b1184c07018b4ea. 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/ES71G2230788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66bb8c5b88ef56b3f48bd6bf250a37ede2b2bce01f362b8046e430dfd2489c9c. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ES71G2230791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x997c4f83eb78ec07b9852d415ae3a4d53b25aaac5aa5ef9f0979e8de427913e2. 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/ES71G2230792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40ef16e648c139d74614c1ab54388aee9654c9ba7c73e3fe3927a0d4a40c654a. 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/ES71G2230795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a2b69ef0d99b1904f77206b207acd016b1194f88ca583d8450699860b9d7656. 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/ES71G2218840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48950d59fde6116e7c202aac35b0faef671bddf41782eefb77ce13cc4a9a147b. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T16:23:52Z), 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/ES71G2218841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe71e0f3629cd7dd7e21225c3f7c355503317dc80f4168feae727782429728ef9. 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/ES71G2218846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac36f18e4021b5c2bc383cb70dfbe80ff4ed64bb86de10f347b81f5cb2443a58. 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/ES71G2218849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x387f3dd289374012f502c72feacc6d8cfcec8128053f316afd839a750f17c5d4. 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/ES71G2218842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8842822bbd8267ce6dfee033ee604e7305ec3f9591f1b2888377d389a00251c6. 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/ES71G2218843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb300a384fbfa4094bede40bc2073ba0c776573518e40474df02def6a116a9d7c. 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/QZMZ92313506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41f06dacf1cdca08e2a6b739a8fb11d817aec7a1e81d492f27150f093433d742. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T19:53:40Z), 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/QZMZ92313513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17fc877a1278262f953fbe98493bef2508105d46a944190bb4690b760417b1ab. 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/ES71G2230837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7230f3d3c8f6501a1a82d861484d47da41db41f212d45e4349902bcef2541aa0. 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/ES71G2230841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd651487d93ff09f798ebad8edcbdfb717c9cbde66e3d77d2d4ee6e4039baa246. 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/ES71G2230838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bbebc2a311a58b4f46947df7730b9f3bb39f562b16f61795e12f46a9288b3fa. 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/ES71G2230839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9fa45f525583c2ad5b5fa640ab017e248292a3b67fd785b81052e488a26eee8. 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/ES71G2230844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3deb85e95c4be1d5b6ab8252bb2810df6b7e4a8d53db6be57a2b21688a8d3085. 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/ES71G2230842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e91b8341b2b7bc62ded59f21c0ce6108801fd18e084a23daf2f4939dcf170d7. 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/ES71G2230840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60d01da6bcd27629cc57cb02dcc96fd15b2aaf3480e7e86cc1c517d7164b910a. 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/TCAHZ2450881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34d7da0d200d15708b109611990776d68c23a867348e1462cad3f3bffee34d6d. 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/ESUM72500229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4435928ac5fb7c3d2958349bc14188dc4cdc7b0118cf9f1bd11e02bcbbeac438. 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/QMFMG1468776.
Viva la Rumba (feat. Los Chunguitos, Sombra y Luz, Bordon 4, Los Chichos, Los Chavis, Junco, Las Grecas)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f5eca080c9421a4b83673cd48e76424583618728dd3f2804ad60ba4bbf09cf5. 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/ES01G1201314.