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 0x56eb6bafb26b824c58fc239fcd6fa95c388a6b665a0f599524911d1a8ba69b57. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dfd61bf0-3e15-4a0a-8485-d69c52deac32.json and https://artists.proofprofile.net/proofs/artist/dfd61bf0-3e15-4a0a-8485-d69c52deac32.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 0xbf9c0419dd484566be51c39f6d0107a6d8dfd26bdfab54fcb7889fff5c7dedfb. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USHM80508631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95c1feaa26e3f0cf750be825f8fac057587e85d0147d61c6c92d178a509f152a. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:53:55Z), 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/USHM80508632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9471ade1678edf183be0c0e11868166312e2efdb02ebba4f65afd6c9e29055ff. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T07:05:09Z), 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/USHM80508633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x670c65a5afc9b826e3ff3a2aa59be6ce348036e53e3c8843c7d7abebffb21693. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/USHM80952676.
Serious (feat. Tech N9ne & Black Pegasus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad35f6a6ebfbbe8a5e57557cab87094c6559906fa4370a446c8155a909fe5975. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USHM80952677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1996eb8ac678f45d1ff2f8b167e3c6a9307ec5ca76285add93053477eebabbff. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USHM80952692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa500483f6f1a687b9d77b568c1f0d0e3968a3fa73736f6887628988feb8832d. 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/USCGH1674468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8908290e400c80bc526548f7255ef46f25857aeb682adf29e5adbe4b36c639f4. 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/USCGH1674469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3a911bb42db70d9720ca2e2d0aa8fe4c2eb15de3b434ae22697de1011e35034. 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/USCGH1674470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92b8691a2296bf03a241a6ccd5dd49c2e67866e72f37cbd70059c5bd730a604c. 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/USCGH1674471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x657834e98ebed85db7cd0146fe3b3a80cfb023c716073ee50c73675bde4b64cb. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/USCGH1674480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4a3b40032687cec6211b62fb8996e27b14bddfbffc028e1074d4fbf06b86e99. 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/USCGH1674483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd9dcd9ebe92a069770172979eb84c2e811c5af2f347807cb52cd3e828af1fd2. 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/USCGH1674484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb08c246acc0fef6837024965a6c723fbeb62e965c518a4401e722631a434f2e. 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/USCGH1674486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x929dba6fdc2233b151131da19e8ab83dc62e9fbc0655cc330605f24d1e25c663. Chain 2 (Bitcoin): anchored in block 960419 (2026-07-31T15:20:33Z), 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/USCGH1674475.
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 0x06af938888bace6779af19ef04ce1395105b3601bfc8a4cb7798baea3362ebfc. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/USCGH1674476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e02637edcd7a9c0ab64e13136ed83c31be3851549969558e81d759d746439d7. Chain 2 (Bitcoin): anchored in block 960456 (2026-07-31T19:53:57Z), 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/USCGH1674479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f49291b9a9d04120493a1417997ffdaf6485a059a7dacf9be9c8263ee6a5ba2. Chain 2 (Bitcoin): anchored in block 960230 (2026-07-30T08:32:18Z), 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/USCGH1674485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x159a30c3f87703a362ca5d12d2e4bce4b0f3789f2b2ff1cc19bf6ae12c0688f5. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/USCGJ1705850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c906b2ba695474c1a837914528156871e1d78aa9d2f386526e44b03d8ad7fdc. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T20:08:38Z), 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/USCGJ1705851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd35f43b2af114e7bf0c8466bd4669e9d76aa21f6ab5d8ab68ab5fae8e9f676fc. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:51:16Z), 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/USCGJ1705852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14c83676d147830799ac7149e48b25f072b0438a52e53c9a804d1a9592903daf. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/USCGJ1705853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43175d7892f2cbf5d3e49346eb8b145fd7580d0ae0534b92a016ce2717ae26ab. 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/USCGJ1705854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41f85be4793920470633c63529fb48e80109641add85d469ed2fb531e5a76ee4. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/USCGJ1705855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05881eb1b7b1058fcf1a2dd688a0f696197e8a7e5dc7590aa2a16c55649584ce. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USCGJ1705856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8989cbe630868f9b0e56d6e66eccdb2f85582fcb6e55a56a7cb024c607e1264b. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/USCGJ1705857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0818b619a8b3ac4402afe8fb1a952b4a81e8a3d6726695f821db6cb951a33d23. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/TCAEM1950660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x784881ba956501433badc402cb30ff0d04aafe1083d938dfd6418555943dd502. 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/USHM81686423.
Fucked Up Sense of Humor (feat. Liquid Assassin & Donnie Menace)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd35d8e9100a1d64daa74d542aab9b077b96c770ce048ebdd20b9c594ecb8f6b4. 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/USCGJ1571708.
Panic Room (feat. Grave Plott, Killa C & Liquid Assassin)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24d5bbe10aea90572f58d9f22d2b8856e2723671aae5aace72ce098e6788761e. 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/USHM92246867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa9b40101c17cec2d803988d01ad1736789a90d292476803d329b1d6a88759cb. 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/TCABZ1439262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dd522db0f81d6900b9984320d8d0950dd61933e90704d52091a113ed21f8e7c. 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/US4M31206210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ee5e56a04d080da6eca13b9d8aa59f839254673d85af29baaa7d7e0907376f1. Chain 2 (Bitcoin): anchored in block 960166 (2026-07-29T23:39:29Z), 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/USDY41675560.
Knock Ya Head Off (feat. Liquid Assassin, Killa C, Big Dre & Hostile)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ceb933b232b18ee553be5f2b7832016a89a3f82b9f69c65ce536cdaf510d5c4. 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/USHM91343286.