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 0xdfb3fab4977a6044a637c79b7277f3c9a12370dd212fefeb7184df5eed7f4e45. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5c5fce68-689c-4f8a-953c-61cb8bff77f5.json and https://artists.proofprofile.net/proofs/artist/5c5fce68-689c-4f8a-953c-61cb8bff77f5.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 0x35dc8d60df8f96a202861c1f20b78918d0e52b21a3cc3cde0165ff33750b1185. Chain 2 (Bitcoin): anchored in block 960314 (2026-07-30T21:00:46Z), 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/DEXN82366419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1b562cf4c05e458fcdbfdde2c3a631b43e1628cfba8e7308de0517d2054086e. 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/US83Z2328874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8df4f342d305327a9bad71a6e78c48546242c6f0ad65f2913a7929752fe25cae. 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/US83Z2328875.
Pablo's Dream - Noraj Cue & Unders Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89fcf36638ded06743e56e71fb59ec0c663357912420242ef6f7126355fb8cb4. 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/US83Z2328876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbf83c9054e1978328dddb27016a543758dc13b5249f3446f80f270a3763d24c. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/GBJX32232031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15e750560d41ce184e4b42b9d299de8ef9afbf66f77f5d9e83fafba8ad07d5ff. 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/US83Z2134753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d5f5d46bd99a4ae49c222f21f5c400fc6c5d0ab7ce85c65a320972955b1ef4c. 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/US83Z2134755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d23129577d022a001ec84342cf2016245d6a513077a8aca5e5e7d9c6549b15c. 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/DEPI81802208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc8c2d41e7751b03c3256855f577fa88c5beca0da127284da9a21ea809e28911. 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/DEPI81802209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62763b881b8de49daf7cab7a70a479202a171be96ca9728e9c0dc7024b2934c5. 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/DEPI81802210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdce6a79cce8ebb6d57402f5f0f26291a083b5d3872d22db21eefde814b1c9bfd. 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/DEPI81802211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e0aeea1d7d3a65a571433d30b45433f1422179fc031ee893e2c846871d84dfb. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/DEPI81802212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ca690f01a38ca713eb3a8fe22fab74748cc18b5f8363aa2a61a22a8afa4d11e. 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/DEPI81802213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa72efe9ec838f8fd96c733ce430819d6c9580c5f2865a7b995cae3b4fa67d9f0. 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/DEPI81802214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54188c1bd564fc406075f923a054de9efcc2426a0d998e59336be37d609a822d. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/DEPI81802215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec60b09fd157752ed3c07ef306e7ce8e98ebe57f0164ea82662999c95ff70a9b. 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/DEPI81802216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x320200afefe36317c09499b6b412ca5d4903a6a48e00420444bc73a9d6256f6b. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/DEPI81802217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20e41aba8c180f6c6fe8c8374a3c4f4f4b69780b8caf23db22f60d1e9ac72d19. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/DEPI81802218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x891b6d322cfaa54efeb0f01cd5297487bb9a61ccbc7d153a7d9523533f31a7b2. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/DEPI81802219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28d3f18b444b92a67b3dd3d1e7eef9fea953c394cec6a6c321ffa390b06715d6. 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/DEPI81802220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e482a87210f5214aae1f6a446956ded736ee925bb37dab88ba7ff7eea186c2a. 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/DEPI81802221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22e0715cbfd390f80516cc3b5cddfd670897342cd07bdc5122862e93b11f2e92. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/DEPI81905402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58c492f21d566468c31d25eb9f17d044443760bef37cffab2d8b44782e07a1f3. 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/DEPI81905403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd76f17346cc653a555f1b277f0ea783b0f4e28f5107e546d8c9930e8d48680a7. 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/DEPI81905404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ee0e638af43819714f7af354feea7fa67a1d27f5033ae2f3204216430d6ef07. 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/DEPI81905405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1795c13ab52ae16807de6698006518ef894c0397b0e8cf277c51cbbff0f8038c. 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/DEPI81905406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b95b41272993a6370faa89b89fb1c30135d00e56d408869e73b44aef85ca1c9. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/DEPI81905407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff83cf3574ebbcc9c492724136f868cb88bc3e8563eaa27c88faa2e8bec6dc3d. 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/DEPI81905408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4a0d147709a5ce2fc19418d1f45ce24f37111d329cb721f42a89e72f1a52fa3. 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/DEPI81905409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d97e6ede905f342bf3b3969ef50d71f4151fdc028c7b446fcc4b79be6dfb62a. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/DEPI81905410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x131ce55634749066d02a0be7e9ad8e82b9cda8d902a64656ce39c499ce6c825f. 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/DEPI81905411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe08622a89801ca26991adcece0f2e4ec9f494098970df7839c3119aeca948c7b. Chain 2 (Bitcoin): anchored in block 960314 (2026-07-30T21:00:46Z), 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/DEPI81905413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1ae4f59d2b275d21f95ea8060f27bb4a997e748554d9a3c1440629160c1e27e. 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/DEPI81905414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16c95f5580936a0e54c267c017f33c517a5447d9be0d5b4c7283e8dfa2911f9b. 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/DEPI81905415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1920b55422592d8f9757f2a8cafa17b0a4d1f01773a32ed52f4d9b31896c2e2. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/US83Z2126932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1478498d76045f8bb2d7b274f70518a12905a616be640db8960d8c015e56070a. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/US83Z2307532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c243f62f9c9590de86d043bf5d6864ef1ff210504ca71d2fca115dfc6e404ee. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/DEY472085989.