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 0x7342672614baff23657391f386cc410789199c7091b9938268d88fa1e66afbcd. 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/5999d11d-f9a7-43f9-af52-8e0a3aea5855.json and https://artists.proofprofile.net/proofs/artist/5999d11d-f9a7-43f9-af52-8e0a3aea5855.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Pensando (feat. Alvaro Diaz, Rauw Alejandro & Sousa)
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 0x02ca773eae130fb575786d137b1b8394402a8edb2153f5e09a918305272af745. 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/QM3W71800031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36c52ad00e8f95b8138ed349ba044539e4b5c0e3e70af17d5de178b17eea9f9e. 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/QM3W71900000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbf5c124639a0aac124f6d7485d42cba3e6ad0a79c4856e453dbd02f2dafcb15. 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/QM3W71800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02ca773eae130fb575786d137b1b8394402a8edb2153f5e09a918305272af745. 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/QM3W71800031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf881f47689035393928a47711c1e25d4df9ea7db8678fb422be99c7257cab524. 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/QM3W71800013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x313bac001908cfd57171415aad7cb4a8960a45f755c84674f1dfa2ad7538917a. 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/QM3W71900006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0783f5435a5f1cb0f178bc2e1b63d7a4fae72e74405cf034d815e4ebdfb1f826. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QM3W71900011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd39985674a8402e96b5c23e4a3af0861da4b57a12ccb165b418240bd860fb051. 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/QM3W71900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f08ed96b4f0b7bf5833b95b8aa1a49d174c9cd2d821385e3400bfd955d0a5c7. 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/QM3M71800025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb301a4f67e19bf65b19a1f12b812e47cf0d509ea623af251ed4f4b8ea0f3160c. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QM3W71900005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74d3b427fc5af42e3f752d726a15220bf1e89d74d9c0837847873b690dde20a6. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QM3W71900008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94f2e1f005a45e1cec99100c8cc5f0eaac8ef0244c7ea947a4934c0f0cedb6d9. 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/QM3W71800037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x554a3504d55b517af48298e776a248b9d9047b801fdf7603d49f3fa75ac2b7bc. 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/QZNWU2070018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23300f09e4a199bef1f20cc8476258fab9c12f0326e964e302ad3e13a9fe411c. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZQAY2148701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c201729f59ebe6d3c28066540c707e02711c39d91a677c6d3ba673000d7ea85. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/TCAHX2448742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70f08f30dd34c59a448818a7fec4e404b0a813d411befaa3e9688c7254a7371c. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/QZTBB2463522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd33f41610d0e0b3b005f37cfc906832aa94ad4bef9f0a5c15f2431ac966742b3. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZZ762493028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c64bac4b8da4a91aec67fdd219ce8afe93b09f9a43deef007b868d8a7f5ec3a. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T03:19:03Z), 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/QZZ7L2402799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe296aaeca847a2f6d31d5c41249773cc9d4d962df85353dbb3ec010c46e7108b. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZFZ32502163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87297f9114b9bc18db870713abe58ac598595c065ab7b0d96422ad364de542b3. 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/QZMEP2546951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84a0520d99e3098f9184741be8a74d10dfe0c19b362d8ae1eac32f8c8cf6e75d. 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/QZNWT2510965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe9170d45160a686b43075aae6c9f634f2bb54d84e4f001afa02603f2e12f377. 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/QT3F52563241.
Don't Say What You Want To (feat. Yashua)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc7b394b1ac22b5d3f17708e63d21019560b3dc0b37a7decaea3ef881947b284. 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/GBAYE1800706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b6445f4b77bbefb5efa1538b7b1a839fcf015c7af018392d5adf7cd72ba3f75. 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/QMUY41800116.
Papeles (Maahez, Alej, Lary Over, Yashua, Menor Menor)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x658dc1c3f613219a57d4b96bacb073f1622dcdb3a0b39205642cad339324a4e2. 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/USUM71817159.