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 0xaa361f6a4244f391c6f8a642925e5a2abf3277a1aab1731092486412871f7711. 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/2b7866fe-6546-46e2-96f8-5ef59e9bd607.json and https://artists.proofprofile.net/proofs/artist/2b7866fe-6546-46e2-96f8-5ef59e9bd607.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 0x0e6eda507abbe74657c9daa9d9b4353aac2f43cc9452503a1579727cc14e217b. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:02:53Z), 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/QZNJY2233590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2943e07c408e86aacde21b420b1cb6fe8249aee6e774872ffc634971cde7b0c5. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/QZW9M2272172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x135c66ac6a4737658ed268a05492022dfe4ec068d0a7ca92af647083c165e542. 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/DGA062446656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x294ad36ac39a13c961a041c7ce24b6792db1e4cce0353887b280d937dd800a94. 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/QZ5AB2369348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x523d41ac62c32ced05e9670cf418223e8ae503c2699ab3965f3924705d98d4ff. 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/USA2P2441395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6674fafdff0c8e7495787cc8ea887ed64b51bf2433f7d78cef65d83e23d3f37c. 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/USA2P2441396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf2f2afd4b33675c7f5cba97e5e1fd59ea620e7d3a224b3ff2aac3d130b6982a. 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/FRX452432073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d15f33b8294b247326c2f376da4b873677383583c3bcc2af45d039ad6839977. 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/DGA062489439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba95f9648aa0299942647ff1bb0615f215a9ae4b5655fac9fb50963850af9aa5. 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/BK4DA2464453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa24bf613f3eb39a76e0072dc4f2c2888b378286f2d4c79975d8ac627cdaa0ab7. 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/BK4DA2315767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63afbd761bcefd79389b7e07354990307c933d33bd6c3b184b100c50903e6e27. 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/BK4DA2415163.
Peda de 5 de mayo (tumbados y reggaetón)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17b1f42018b8fcb28d410bb0b063f7c7a24a536b582b07e898cd11ba580ee6c0. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/MXF152300658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda864f06f2f763609465750dd10b7e7846b9e842a155eec40a7ca9a4d9e0bbcc. 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/GXBAV2313391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x294ad36ac39a13c961a041c7ce24b6792db1e4cce0353887b280d937dd800a94. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZ5AB2369348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dfad1697882066ffe0abb97b2a0823b719045cf67870a629366a6b059c20a7d. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USA2P2477177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02ebd81ccffb5747427cccb32b1b1929e9f3a685300d1fbe7a7b246a1addad56. 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/MXUM62300512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd250065022b545f5a7b43091d47b9a9075d2fe37826b7bc5c0dae21655e231b1. 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/BK4DA2456119.