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 0x9b9d6cb04f16f6578d0f7a41fa4b983d8a2b1c57747643eabb6053795fb6b2ce. 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/2dfff75e-e74d-4fc2-8d41-43ea2c5a3dd6.json and https://artists.proofprofile.net/proofs/artist/2dfff75e-e74d-4fc2-8d41-43ea2c5a3dd6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Electro Swing Party by Bart&Baker, Vol. 2
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 0xb5f4f2ab870c0b33a4b075a2c226266069d1d1fbc4a535e0ffeb2efb007cc795. 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/TCADY1802066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ab6f82c38cce914d66bdfb0af9c1921809ac9febc178932cff2bd58d2fcaaa9. 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/GBJCN1914802.
Sing Sing Sing (feat. the Speakeasy Three) [Radio Edit]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57d60e77937154a79a9bf7d2f71f58f70f4866b06d89f194640fd2a3d570af93. 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/GBJCN1813602.
Electro Swing Party Vol. 4 by Bart & Baker : The Cover Session
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6df7072612b7eeae5e788605ca4f636735dbe6b3c09fdb43e16e7581a80dffd2. 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/UKW3Z2301245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0fdc785901004719c2b11dcfe99afabba47abf623c1f135f6866e3f2354d16d. 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/UKW3Z2301107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf205f705a8b3a61e90346ba08a1449e4236fce12a3c59d55b5d82c9fb2b6c057. 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/UKW3Z2301249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8a195f94078472cbafc011c732626bddb163fe4769d6c24f0e4fe883d7515c9. 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/UKW3Z2301250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9544a84a6d72396b98fe9b9ceffbb0fc3db3942a7fef4c96748f14b89601d67. 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/UKW3Z2301251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2c000c4d40f92a24404e1d053a5aaea5be6b71e3ba57db09db3eeaa61b89848. Chain 2 (Bitcoin): anchored in block 959109 (2026-07-22T10:22:10Z), 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/UKW3Z2301252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba09361a9ac805143fe5ef1b9557fcccd8166da27b128dc939fb943647492a0b. 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/UKW3Z2301253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65b1905d362aec08ca0fa1cbee60ef7bd7dce07cad2f0507c8db26c5bb20fa85. 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/UKW3Z2301254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc52d9bcdc589b31695a496bbc6b1804ba65b2da1fb483b2a023e5f27c066f057. 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/GBJCN1914402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x239fb91d4a7e61738a546080e67811c070120c186e2c76c1c31c3ea2ec9e2036. 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/GBJCN1914403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dcae29a68d2aeae3ebe717b1dd3f86c1ecb1b4ffcb433ac77ceb65d00737cb9. 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/GBJCN1914404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0796b1dc0f8a53b94a34213c8f2e84155b4546b7eab7be714a05413339f7a784. 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/GBJCN1914405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c01db626f6733b21122233cddee9f51b4c934769b99662f83697ca73f6808a1. 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/GBJCN1914406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b3df60c1acad48f870e7702a59eaf5f0f6483c6f576628f4e998eaec9312198. 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/GBJCN1914407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x839468d2b6ba7aeb309abea3ecbed42407fa8cc043e3f8d94bf1260fcffbf62c. 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/GBJCN1914409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2368879f36206a307b6a22c5ebf2d130ee106754b37ed64fc82e94084807a47. 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/GBJCN1914410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x724654bf4b183d274e0f63000f7c734fabfe96e8acd920b67453b56fd76e6b61. 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/UKAF31600002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe46a3adb3a86499bf7f3171a9c4f3a7dea99daed91d364c6627ac5989cc6bf69. 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/UKAF31600003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12f8a45a6364d977960f3249e90b1917d8e3e141b242a982e63e90c6d392885b. 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/UKAF31600005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdac8ef66dd1dcf34cc2d2c6108468c56410613daca2e057ee9f8146c4d920e1. 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/UKAF31600006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6480404aaf333582b1be71251f687fab7d5bf7bcda107ce68cd0db3c6d6ebd3. 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/UKAF31600007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38520d69731da8ed4e4b98efada7af245aaf76be201bebebc1eb6367f5b44b8b. 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/UKAF31600009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c136ec1b5e665db2d8c0b099df2df110aae0ebe58bac171d8adbb68778b5be0. 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/UKAF31600010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c6c108022d4a3528fc10f97b8249b58e713a94764b1f2625f073664823ae756. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T19:41:12Z), 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/UKAF31600012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x781382638a4087a1ed8788c8f75f7c5653f509009f4f096894dfffb3cf092334. 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/UKAF31600013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xece221e834aa62c5321dccaea3921fcd81f1863bf45163fefbb4c84936ac235d. 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/UKW3Z2402463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc2adc163445b7d48ab71776214eef12b51ddc782668b0b52a4b563607e07e80. 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/GBJCN1915101.
Let's Start Again (Odd Chap Electro Swing Remix)
Let's Start Again - Odd Chap Electro Swing Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8c48f52a585aa7eeeb9f5b47af542d20bace7a06028a3ddf7f7f89dc2d46351. 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/GBJCN2016901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c9afc11e29c7f1a62d3516d7c5c67a8ec651b966b95acbc15ee3acf74473754. 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/GBJCN1914801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ab6f82c38cce914d66bdfb0af9c1921809ac9febc178932cff2bd58d2fcaaa9. 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/GBJCN1914802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dcae29a68d2aeae3ebe717b1dd3f86c1ecb1b4ffcb433ac77ceb65d00737cb9. 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/GBJCN1914404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac5032dd9e6029b3a617ca15db37690ef696cd33a07fd85ec6cb1b7b5f8f3361. 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/FR59R1820769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4e31066517cbb467de1b6e9d3ef41aa3b76bc7f6b17a3118631f00009264964. 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/FR59R1820775.