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 0x34108bcbf9b906720a5d46faacb7547d7a343d34e21841f47df689667fca3185. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f2cb989d-86a9-4357-9301-62134f4f84b5.json and https://artists.proofprofile.net/proofs/artist/f2cb989d-86a9-4357-9301-62134f4f84b5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Cats (Original London Cast Recording / 1981)
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 0x0a8aa65b2d731eba604b153f3264eb5f58f3912a4fa352a5bd5722597b54bb44. 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/GBALG0500056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7613a5e54bb52e083aaa423c88ac5d45d5ac1d5497125f153569a3aea60c789. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/GBALG8100014.
Prologue: Jellicle Songs For Jellicle Cats
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3244d8e3eba4bfbdba03ca69a4c78db589518f8375e3a67ee1bf453989bf0868. 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/GBALG8100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7462963833475f378a38a0ddc3b96ef458c71772d42e1801aa346a3d6c406c94. 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/GBALG8100015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4efe433f3d05010c7b1a8dae14f93b9d9212bfcd56e9a51aca383a740dfeae3c. 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/GBALG8100003.
Growltiger's Last Stand / The Ballad Of Billy McCaw
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe39c780a87a081f0f1cb94143a7ede88583e31e69549f517f65737472d8575a. 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/GBALG8100016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaace33ed00965087f4b2a8e3e7f1e79e5668911bd2974d7be341e7097392779. 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/GBALG8100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8231766d987ed85d06f33b3a02f466644c4ee66be36f148fd814f371e8a0c478. 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/GBALG8100017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22ac612d2bafcb35907973066c1603556070606e7c7ed8f521fe8fb2b63530f9. 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/GBALG8100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x994d1dda801e0bb3beea612318b0263d7262d2312a7de2350abf25a4462baa57. 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/GBALG8100018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8b5d66c286e569bd9b6e9181f45b7716832cbe4bed931b3e239015a1743a556. 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/GBALG0500057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb469d1b10b4172d6221221af463eb6e96932ed1882e93e24684a80303455805. 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/GBALG8100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe82be16ec32c13c103afe4e52a8091ae1a7e8a46d4945364d226501a54dcd173. 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/GBALG8100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5215cdf4bdd36a03accd25a5d95331e911ace919c402609373f0bdcafec29afa. 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/GBALG8100020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2038c3f28d4b083096bb53adb5b7fe0809591d8a12c521b70d3bbfe7309cd023. 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/GBALG8100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7036db918d98a4ddc28110781722eef498c581b5605f439d1dc2a0240ec8e0ae. 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/GBALG8100021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28deb01b1cc4d0a3c0c0305a0595a4c34e5a2c18e09e01ad0221b6c3303b8ad3. 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/GBALG8100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58f76f73662d1573e9bf6fab3009ae89586b5dd43a690061221a94c5cf05b5b5. 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/GBALG8100022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa24bf0b6c39b3922cf13e836a5ec61fd60a431fc7d78f3f81a7109289f89b2b. 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/GBALG8100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3565615b49508de00396e5fc5be4ee482c9801795dfe817042b92ef2b43bc3a. 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/GBUM71906221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d1dd6ab6c0ff63230bed9591a0df201b510bc8a14e19891673ddc9b8817f5b2. 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/GBALG8100011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaa6ffbdcd8b84d001f1a2758f233dc27dfd91d3a405ce9f75d1d46edfa3bdf8. 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/GBALG8100012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x179833cb44a4ceb5fa2120ede99f657126cee7a390eaa42e4b452b40acdaaa53. 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/GBF068990042.
Highlights From Cats (Original London Cast Recording / 1981)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3244d8e3eba4bfbdba03ca69a4c78db589518f8375e3a67ee1bf453989bf0868. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/GBALG8100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x810fdcd1e4de03460b823da16f5f7e0fce845f7d838af72c3c88443a37558dfc. 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/GBALG8100023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22ac612d2bafcb35907973066c1603556070606e7c7ed8f521fe8fb2b63530f9. 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/GBALG8100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb469d1b10b4172d6221221af463eb6e96932ed1882e93e24684a80303455805. 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/GBALG8100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28deb01b1cc4d0a3c0c0305a0595a4c34e5a2c18e09e01ad0221b6c3303b8ad3. 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/GBALG8100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa24bf0b6c39b3922cf13e836a5ec61fd60a431fc7d78f3f81a7109289f89b2b. 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/GBALG8100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d1dd6ab6c0ff63230bed9591a0df201b510bc8a14e19891673ddc9b8817f5b2. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GBALG8100011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xace45a163afced6576c8b2e60747b15249491a2228cbdc772b0a1d1a1b629cec. 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/GBALG0300038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7462963833475f378a38a0ddc3b96ef458c71772d42e1801aa346a3d6c406c94. 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/GBALG8100015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8231766d987ed85d06f33b3a02f466644c4ee66be36f148fd814f371e8a0c478. 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/GBALG8100017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x994d1dda801e0bb3beea612318b0263d7262d2312a7de2350abf25a4462baa57. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/GBALG8100018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb55f1cbe5b1f759ae0a2fcf4e96fb3493db6726a83a8118b810d87d926660737. 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/GBALG8100019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5215cdf4bdd36a03accd25a5d95331e911ace919c402609373f0bdcafec29afa. 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/GBALG8100020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7036db918d98a4ddc28110781722eef498c581b5605f439d1dc2a0240ec8e0ae. 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/GBALG8100021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58f76f73662d1573e9bf6fab3009ae89586b5dd43a690061221a94c5cf05b5b5. 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/GBALG8100022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5215cdf4bdd36a03accd25a5d95331e911ace919c402609373f0bdcafec29afa. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-21T21:22:11Z), 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/GBALG8100020.
Skimbleshanks: The Railway Cat - From "Cats"
Unmasked: The Platinum Collection (Deluxe)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8231766d987ed85d06f33b3a02f466644c4ee66be36f148fd814f371e8a0c478. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GBALG8100017.
Memory - Original London Cast Recording / 1981
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x179833cb44a4ceb5fa2120ede99f657126cee7a390eaa42e4b452b40acdaaa53. 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/GBF068990042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x179833cb44a4ceb5fa2120ede99f657126cee7a390eaa42e4b452b40acdaaa53. 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/GBF068990042.