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 0x6f5667a42c00b0a068e787f06566fd2d4cbb963c93ff9851f4376eaa8212f42b. Chain 2 (Bitcoin): anchored in block 953736 (2026-06-15T03:21:19Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/983d51ef-beb9-47ea-a8de-6d6fea1fbaef.json and https://artists.proofprofile.net/proofs/artist/983d51ef-beb9-47ea-a8de-6d6fea1fbaef.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 0xbcd8e375667c3bfd54f55b95dd7bde921df5955d258b0446dcd1a36174f04708. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/UKXN22505943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x591e4bfcea60d462bdaaf4ce5ae73415a144e7a4bb86086e21df17537d052459. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/UKXN22505940.
Concierto para violín Meditación de Thaïs
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19e5c213d3ddbb1c2aa86c6d217d2b55ce322d590a5463dbdbbea1ef86711d85. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T10:05:23Z), 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/UKXN22506014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0d05f22567129345335cbab4f5614d3552e635db42cd1ed728a9eafe745de70. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/UKXN22530506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a1a554299b3a848f046222d7296cc914490e3536f7d9c4f66de7f134fa01b92. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/UKXN22530509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b5c148588efe4a1b640f8e90aeb95d59aa779be19b0bae47a55221080e8be85. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T10:05:23Z), 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/UKXN22574830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x850b3319f390447877ecf2fb0c7a90caea987c65eaded15a4ac55630a574a545. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/UKXN22575061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe97f56d69da740b6ab0516631cd84141ab40c3122a2975d8b5b431b28e2de45a. 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/UKXN22575060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30bb2d87aafcf83cd3d98a517fe338d44f7bb78ed6d4b04c52b225f6f8ebf13d. 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/UKXN22575062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfda3e1688a3bae90e6ed6edf0c59bb3bfef02d03fe4e10fda6af30bc5b9010e8. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/UKXN22574827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4946a483989e6d4268055e296e1ccf1085587a8232c5e8481ba21b76f5a69083. 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/GX3Q92504314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee2172230647fd1f176225ba37fff2612b4085b73022d660ea6f5a077a0c171d. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T10:05:23Z), 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/GX3Q92506460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x835a9c605a0c194c2834d2b6086746fa33f315381e6c4ca28f8773cfb37f2658. 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/GX3Q92506466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c6c0ffbaaf2d2d2741ac8c56b91f7f22faafbe2b004d696047301510f82ae3a. 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/GX3Q92506449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeefa268e6917ac15119e9709ea7535adda9a28b0b1cb917cd413e99db9a59a41. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/GX3Q92506462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x652aa97a3c15c0f5fcec05c7dadfac09609009b6bccea991e2655daab18640ac. 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/GX3Q92526663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65d295c9dda4714c4df066b7d2123983fd5d0305ff09bb5dc5ca440a4fdb9c82. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/GX3Q92528956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09c1b5353f85d58e27fcc0b0dd3fad1b2c8aec67354b65120ffee71896699995. 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/GX3Q92534308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43da2e8634efa03d3efdf3daf5165eb05613f41b463b8deb166bde0b3f485abe. 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/GX3Q92537896.
I Understand You're Interested in the St
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b55848ee603eeda1af5077d2de33cbc27f54381bd7abaa4d50be36f21941322. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/GBLFP2538689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19ac616db019a1de00615de1f5fa99cbcb6ee0beaf48b8f78feac071007ffc70. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/GBLFP2538637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2bdb01c312e2fe66ae2f18f8c72502539c515307885438269533fb1d738e99a. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T19:26:13Z), 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/GBLFP2538681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bb2202a526faee79813b9abced5b9efa0c3fb8cb1c22fae4cabefaf1b21fa33. Chain 2 (Bitcoin): anchored in block 958573 (2026-07-18T15:49:54Z), 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/GBMA22526569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd800c1acb925eb16ee586d7df0bc38ab0224e1a4dac1d04d24592ee911c313d0. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GBMA22526584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaefe0b2d1b3bd9a4d3a401f2cd15acb9a1c2159b52da16ee26a4f468646bcaf3. Chain 2 (Bitcoin): anchored in block 956775 (2026-07-05T10:41:06Z), 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/GBMA22526588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9752e48b3f2786c476a731f2108aeec85289f76b6c0c245a0e8c33d1fa2b3609. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/GBMA22526546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb879dce394df7006b35ce50bf6cd44ed150fb8081b226efc7acabbe4a546697. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/GXH2J2503499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80450528a329a8900ebcb667364f1f144378ed0b8508cf971864de6f38f86eb3. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T04:55:29Z), 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/GXHAF2540634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x299a4b61947a1a59bb1bb3f02ac7f527ce18a96284f8c423a883f295c713676b. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/GXHAF2544141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02635eff783bfae1bb313a20e864d3d819726a133f45b14c3e7e8a026dfc28df. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T00:52:19Z), 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/GXHAF2544139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dfee43b88a98ea8110f85c47cf9e2ac1d4f0749177bd727f9598bc73f557642. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/GXHAF2544088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe01c3d035d23850db2adba83efc3a4252f251dadc2f10aee962949a23bd9b7ae. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/GXHG92512147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeb3e3f14382a3593e7929e388343477f4fccbc7109bc4f4bdfb38626eaeb111. 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/GXHG92512167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf42b9d7c8d94042eae669feb79a939c9e4a7fa9d09e4091f7f27e839b027b63. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/GXHG92512166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f3071b075b6f62be25c08508a72b45878be6c92be9295e8a95d7e370f4ac425. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/GXHG92598206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fcab777f24ffb6984e15029f645df414c3cc81ee63003f4076f4fac19cafbcf. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/GXHG92598204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x596549243f35ed080469a46eca4091ef8e619f6b09a110c33d416caf81f90542. 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/GXHG92598314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73a85b4676c4d8338f0978fc05bc941dd6ff5a9fe5a7374a6a3e6a7d35c1d0a8. 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/GXHG92598318.