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 0xda23e412e52c17b392c775aac905c0fbfa9accd6d6c930d5dbae54a2ad9beae2. 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/99918fcf-cbe0-46ac-b22b-72a823b62d06.json and https://artists.proofprofile.net/proofs/artist/99918fcf-cbe0-46ac-b22b-72a823b62d06.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 0x13f02b3e6d585b8bcf7203819e1ff7628f48213a4c79b7178f160d84f8ff64d1. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/GBYDJ1300081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbb27ebbe7fdd1adc55871ec6bae2562e470eb336236ab1cca207c267ecc64f6. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/GBYDJ1300082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ed07df443f36b0b5a53eb6bb47e564708fdac2b20cd6d7e168549450fcf9bec. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/GBYDJ1300089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4df5a3686d734fb93fa0f573827e7b53c8b69bbf01deea8cd81983775636e875. 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/GBYDJ2000032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x613611458f21c0da9bb121eb4d76d1a12b5135017ee993c1e393dd3031d5d88a. 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/GBYDJ2000038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c6dcc7ad82da563757df9c3871a445ab5928a0c79248778e60632f6b542d69e. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/GBYDJ2300145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb58c093a5299f08f9eafeb2797e783d753632d7dae51ac215c4931abad17f78c. 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/GBYDJ2300146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x030e9ef418daa73e77830a5c0336ec7bbbafe808102336257f5b2acd50ab1083. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/GBYDJ2300147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c493e4fa5e7bed0bf32a17edbc14214abd660efabcbc01af4a4bd158c3bdfad. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T23:55:37Z), 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/GBYDJ2300148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcff42bcf811860c3c9fc53fa3d81f30ab7bdc51fa437ceaf2755973bd76e7ba3. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GBYDJ2300149.
A Journey Towards Total Inward Isolation
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ffe05dc821e69d7b9d63e3bfdf7cc41715e4b75c26617273de4b05b202ebb35. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/GBYDJ2300150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff5c06a46a2803a9108137cb5a457c29ed42fb91c59c2ce89aad054ec0b6883d. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/GBYDJ2300151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x130eeca121973966d5ce0735d100d69060124e812947ad359f85057ed26bd08e. Chain 2 (Bitcoin): anchored in block 957892 (2026-07-13T18:21:16Z), 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/GBYDJ2300152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d3985c546152b486fd33ba5d8a8c2d649b075b022367cfdd43bce0c98b5af5f. 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/GBYDJ2300154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5d77d0f39aa52e670848551dc2788131601f20826072165917b42f8c4be5967. 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/GBYDJ2300155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ca7fdabe20a0d0b9c964dca6ff35e74ef465f5d06937d7f5093bc8c2d96670e. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/GBYDJ2300156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f6bfbb2824ef771a5fba594c59bbb40ff13b277cee50d1373f25761f6a1e14e. Chain 2 (Bitcoin): anchored in block 957892 (2026-07-13T18:21:16Z), 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/GBYDJ2300158.