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 0x5b1321cbe3f0240b01802cfe903303b5dc7cf0748131a82888b23ddf8703b7d1. 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/69905b19-6cc4-4959-8b96-30a4302607d2.json and https://artists.proofprofile.net/proofs/artist/69905b19-6cc4-4959-8b96-30a4302607d2.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 0xccffce6b35be09cc8554f1d47e13306cd46470e94a5b86b1839beab96c4bb672. 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/INM200400052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8a5a8c6fd4f720e668c957f32248c6cb2fc194795c513e9268c5934fba8d730. 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/INM200700033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7d30ebcf2bd9226e9fd265ead0fa44103534864e96a9acb89ac327e1957d61e. 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/INM200700983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6ac62cf270ee3a1e4b537ca2000e5a73d5ee632c9c499fffdec597086a95c2b. 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/INM201101842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4727741cb7a71c84256457ff1ad1af07520098ae23023eb453098847879da6b. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/INM201001586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15f0447aa6ad4458dc7d189497537678a5ec57e6623c187f3b252b44a82ca6d5. 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/INM201101722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7569df18e95754a2c0dadf3083feb592e4d919fabf6dbe43badd3e0eb22c8c8. 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/INS641200962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c7e4cfaf168059ba38a93d7ac9b4baf3f754bb79620c891fbabc27e3549ab20. 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/INS641201058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b2511b6bc00e4d4b6e019ea5a16f21ec60174d88f5e025d55405f08ef38c595. 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/INS641200060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x672d7b7bdd458ddcde64e55c527c7d0237680a0476047c060720a485bfa49258. 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/INS641200063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1265e99fe1f60b149182f149fe214f56e31fcdaaa597e5a59de51ad151bdd84c. 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/INS641200067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x676ba790fb8cb2ad2b759b9063abe6f23b7d484e9a163dd9ad1d091191056f21. 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/DGA092323225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b0fba1b3f2eacc2e19864a6f23ac709bb40f6267cf9dfaa7744b6a1cc6623d4. 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/INS641200066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27e5968b32bff17f42e71d8c2c29fb24539d07a45aaee3f974d2ad2df8123080. 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/INS641200967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdab1e43782bd5217281295ecd0fdf55608f2df27fb47255b55f99061174b88f2. 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/INS641201150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca9e783d8fe7264f64f88507187793601ce78fa4b05d071484a124d17f5e52fa. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/INS641201152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4166abf36a2847b45f34f70868f339a23b157e8aad424042890b4c35aa788681. 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/INS641201153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36a5d277eef71e61a80f601d7817c4ac1215e1c05c297aa3a3259fd0343ad4de. 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/INS641201156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf239b1aaec35964d88e5a30ef180074b3a8090940615a131538e98561c635df2. 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/INUM71200063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ecfe2e3c631eccb7deb97f0851a33332ab70817dc41bde52ee97eb5bc9b2ad4. 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/INUM71200508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d34a15fe40e01767fc24b9c3d0cdfa2ac228fd7a7537290d8c84ff5c80623a0. 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/INUM71200869.
Journalist (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb85f7960ad2d4dcb797ae521fecfd56659e37ab590920a4d3b8e4aa0fd7360fd. 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/DGA082404919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65949d6b6327a5320534b5cb6dab47db6120b1baec2fccb80b3745fa86bcbf2d. 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/DGA082404920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d76f9a8a63e385fcea7b761a08bed7f3a3579e34641413754c269c4bfe632a3. 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/INS641201125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x672d7b7bdd458ddcde64e55c527c7d0237680a0476047c060720a485bfa49258. 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/INS641200063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb34b388fef7e2eb3f157d9d9d777d3c742886fca16fec55011f1b9077c9a33f7. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/USL4Q2052673.
Thandagan (Original Motion Picture Soundtrack)