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 0x33ed95ff4d3b2d12bb993d705a4e1b64cc02c0d03dd321f7bd1ae4ca7f88de86. 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/395ef64d-342a-4822-9dc6-a8f7ec6be7d6.json and https://artists.proofprofile.net/proofs/artist/395ef64d-342a-4822-9dc6-a8f7ec6be7d6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Tokyo Cowboy (Original Motion Picture Soundtrack)
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 0xc7a9c758bfc8122a2c2ba446694406ba507ccceae298a711698a49fcadaa23b6. 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/TCAHM2368704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb41c48ea3c7eb3de1bae06014ee570d4254e3e5c0f4b71172f586259b4172c9c. 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/TCAHM2368708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e6b58352c949a3660fd915786194a7a54dce051c2871e19a5ec26757bac7396. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/TCAHM2368591.
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 0x6cc3a294792c676132bcbf0ae1160f4f691d42fe5843a9fa7c6c92598d5779e6. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/TCAHM2368794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x133bbf79745b337159b7e86982eb22b4b5486fdf45c2da204ec8a591305e7d6f. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/TCAHM2368822.
Surf Nation (Original Documentary Soundtrack)
Have You Heard About Greg? (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3a3b79ac376279fb18a30130d072af4d3e7a2f75c5b17fd3520f68e6cf607b5. 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/USL4Q2212107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6551e85aafd814512fd05ed2e04514ac45acbc10ecb281c881afc3534779ac3e. 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/USL4Q2212109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99ecd36e8d20994b66c798dd37907e4f439a428507aa81040e17a92d2c8653e4. 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/USL4Q2212116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3594c862f1a24d2be72492e33da01605f845e18010f715ae5d174222bd178f0. Chain 2 (Bitcoin): anchored in block 960241 (2026-07-30T09:58:01Z), 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/USL4Q2212108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef77dbacb07d313445b9f1aec65a23355f15b0534a6788c4f353abda9d51f379. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/USL4Q2212110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56c2c4772fd4604f6cd76c3cd0f0ece6e5beda1eb28c4473298709733eee5ffb. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/USL4Q2212111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4de115df34a9ec1cb2f99bd67dcc23b31fb14347085b58b3272c67fbc7ae2e85. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/USL4Q2212112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdb3ca4ce214c99f344b6e0eeceea89e760727608e6cb415db5087ddf2504737. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/USL4Q2212113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fe42176022cac8121ed757ead1893d5f29a21a375904afaa8569037745c7bca. 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/USL4Q2212114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3a60ed89950b455cface5990f76754c124d2477f030cbf28808ecd6ef74e06a. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/USL4Q2212115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c6100b35726cfcf8132d7fff54d35107dcd42f0306a9aeec0f7434777f25c18. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/USL4Q2212117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd339b5dc37db7fca813662b2d74da254dfffee03a5be62f48981896758589860. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/USL4Q2212118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbd915cb76f568c240cd327b3cc8626e29ed81fb1528c1e21d0d8c6cbd022e66. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/USL4Q2212119.
Exposing Muybridge (Original Motion Picture Soundtrack)
Ghost of Tsushima: Music from Iki Island & Legends
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb0853cb1110ed593ea1bd719cbe0353384945c687bb20271724513b92f29ad2. 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/USGSS2100076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eb7bf8bb09e18ca5ffb74ea72866ef9cf11caf043ff9c7a88d68b5703135103. 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/USGSS2100077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6febe65fc1808f8926877cf5d15c2a6d7a78c491556760a00289f77e649c6b3d. 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/USGSS2100078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefddff7571f8b0bf65ef63211c906f2a636a8fb71c0f40a116673d4281952ae3. 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/USGSS2100079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x259cb383dcb72def9e02fefc5a99db1aaba4fdf05d98b976983b6d987974b1fa. 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/USGSS2100080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x528be2470c116bf3fc4fdda0aaa33990854cd6f46f5d4b58d829d6033604a94a. 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/USGSS2100081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb463342ad0eb6379a596ce03404215d53c5fab6d4ed512ff5afca181006a4366. 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/USGSS2100082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5bd40fbc8f34642dd4c9af51355f45597968dc77f38a4372629c99551761c3f. 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/USGSS2100083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x566d310a6d07c83d0ef74889133b08a309159690d8c5cad8d0821f99a0c033cf. 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/USGSS2100084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16404cf5a20b1cb73da256378add1f6ec3998d15ea3a07cbcdc7f20b95dce9da. 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/USGSS2100085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62f9da783b3875477d0ef25b4c49499b4a90317b19b1129d570087845ddd06a1. 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/USGSS2100086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac4d9bf5af55431ddb6292fafa837d1821f71319b8a16b39bc003594b8d1fbe7. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USGSS2100087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7420373c939781ab00b8a4c4b4344d404ed85ee2f18a924115654b8abfb10e9. 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/USGSS2100088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x608e5479a3ae85f55e63b3b758d2576cd3d0db70a13e785bbfc1f1ffd842eb00. 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/USGSS2100089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb50c9f4cc3eb4c29c9d0439565b6dc60a4f5293ffb62ae9e0d4dec067cbcdb6. 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/USGSS2100090.
Qinghai: Our National Park (Original Documentary Soundtrack)
Harbor from the Holocaust (Original Documentary Soundtrack)
American Factory (A Netflix Original Documentary Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabc6fb5ee845a6fb5e14d8e057c8fb1da9bfe2bd51fcdb27fc123a7e69ca7bd6. 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/USLS51955101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2baf76b0aaa0e4ceb291a63a40ac6a7f5ea5ca7b77cf717deda70da68eab6fa1. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/USLS51955102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5616c136dae7690c3b17d6ba2df544d326cece13f406e4a5624878f05a9b898. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/USLS51955129.
CyberWork and the American Dream (Original Motion Picture Soundtrack)
Devil's Tree: Rooted Evil (Original Motion Picture Soundtrack)
Paper Lanterns (Original Motion Picture Soundtrack)
The Cairo Declaration (Original Motion Picture Soundtrack)