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 0x370e495c785f7a59d7f055709b06adbf50e8e9f07be508cf991d8cbf2cfb2a55. 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/92e8f9ba-93bc-4e96-bb04-adc4be11a09a.json and https://artists.proofprofile.net/proofs/artist/92e8f9ba-93bc-4e96-bb04-adc4be11a09a.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 0x73df668a59287dae2164b83ce153885a678bdbfd4c0cf5501a6f8a8b04b774ac. 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/USHM80659453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01a6197d8110dcfa1b8470a903c810c2cee3cb7e14dbf3001cab9d645ef6bae0. 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/USHM80659454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab1015831777f6381ed24c46d833ad5643e31f6f21dffcf81dbd0496253f469b. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USHM80659459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0c89de73fd1ef0ec520e9978e872edffd31102c2622fde281570570c4acf6bc. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USHM90602708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb436581a5903475e4877e4f2604bfd2e88af17dc590ab097d8f26d9ee567ab10. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USHM90602710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfa189d787eebe59ebbc9c55a372b1c67dbcf70dc39f558e5b9d57b3c8d1ea28. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USHM20971897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d9efd62f027fd05f43858b9b5f70045359fbfbb851e6628fe4a51a5ac6ff721. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/USHM20971899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x822bace102871e3d24277f61effd5993f5501a4228a8659a93c7d66b05416a6f. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:01:55Z), 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/USHM20971902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5651393c70f24f8249df18f7630f916c9a122f1aa4a7e6f2198b47a430cfd9a8. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/USHM20971903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14803e40fe76941e70255e1f39e0153d13e2d006c1d1ad083150b7013f0b089b. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/USHM20971904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fe0f1e3e3daedb8783b76b1c07ce0e8844b384792fcb03c7411c8d8059d0a2d. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/USCGH1936009.
Seasides (Demos, Outtakes, And Diamonds)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaca164d54b765ee4b6e8774e9d9546a6dfb6a8762c92db1b6991f2cf2a15672. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USCGJ2539757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79f7fb8688a5502a604b031724a12296bdc05d543e8797c30069ff3fddb65271. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/USHM22594030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc562cbe5a44b5b8a15c8448e1e1c50334444bb1a3a62d24e21c9cd3605b93c37. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/USHM22594031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9ea493f906dd9dbde0d6a00360984209904b4b42077d04299305ccc9c8cf37b. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-20T00:21:53Z), 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/USHM22594032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb714aaa4849171fe696e4004941e02412a99583e960c689b4813160579baebf2. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:02:42Z), 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/USHM22594033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc51696bf9c7b32a6882b1af0d1dfd2b4566859eb5807a9ebcc546ff9fcef03a5. 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/USHM22594035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb31b64c45fe08b4c746119bc87f59354d76849f9a506bcceab7d423097160167. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:40:44Z), 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/USHM22594038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa20ddd30057cfda9007f8108e0c67f9d1b8936bb4294b757521e38e05fe33f8. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/USHM22594039.