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 0x6f420a46f6de4d7b042a40857db2e1556d68d43efea497e03754716f08ac95b0. 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/5a5bdf66-078c-4ec8-9556-283d88402047.json and https://artists.proofprofile.net/proofs/artist/5a5bdf66-078c-4ec8-9556-283d88402047.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 0x38b2496f2d638d729e56282085dc00deea1a112cbc4d2445643ea0fcfb0945a5. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/TCJPR2229560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2505c7ebf606515fcd658c153c1ab40ad3ac25578a40a0ab17709628347cc40. Chain 2 (Bitcoin): anchored in block 958865 (2026-07-20T13:19:11Z), 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/TCJPT2280923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f0ae5a6d8329936aae09d592a8a223762683af304556b3425ae91c14dde5cbc. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/TCJPU2352125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x976fe01eb90c71e3e206f930219910c7f1b0953055a74e33f5ee890df1fee3a7. 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/TCJPV2346827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x434027976b69619bb1d2ceed1e4a7ecdf348b59e8a15c45f9863fdf17d6e35a9. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/TCJPV2347067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1957f5d3d4f8f86a013e52b9a64b943ae094bc2c4232311e7b4684d30eb0ef3. 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/TCJPV2347083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9399d6921ca44c06ad79bbf7068d7d9a874a4c67a3237cdcee93114d1c5fcfdd. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/TCJPW2369743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c647a63f4e9bbc875073f0dbb36baa5c7848d7c32c7fc8d91a83ffee5526094. 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/TCJPX2300154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1b762ba38863e3525d4b7a37929ca5d1bc0e4eec6df2e869ab39d858afcc630. 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/TCJPX2360858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f8521b108268d4e4cecc2eaa5ed60aafe6accafee60e201f832352a534a50e0. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/TCJPY2313129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd35701ee657600f60af1981e40c8773b8eabbc292a793b45dbf897bd2e915d71. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/TCJPY2320765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a1780e074d40e0cbe5466f23da62a3f44d30c4da364763c682515b01ae3328b. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCJPY2320762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9fca9628d6554d11f63e6df33b72976561b9360db761da70525ab3feffc7cb0. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/TCJPY2324446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x777ff3d2aa589cb58b0fdedf6f8639f8a8d527be12cf72f1734c8024789ffc92. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:36:28Z), 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/TCJPY2320769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12946fde971558b4c0ebb3a2c9ec56ee353db2702ec6a97e180e67644cd36d3b. 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/TCJPY2320725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x656f589076e4c7e9093ee7e702b281d386eecfd9d889c559fed95cb911ebcf36. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:32:42Z), 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/TCJPA2488508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x381e7d607eba664b7b14617f8005ae4ff0ca7d0e2aa4559c009ce78760769f2c. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T13:57:06Z), 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/TCJPA2489363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa780fda62832494cfaf61f50f0a8eab28ca63986764a2f9ab01d62d84dd2ab1d. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:07:30Z), 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/TCJPA2489370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86d8bda4f211dcff87098ee631ec154f11b85ac05cdff09b1eaeaeb931e1ed6c. 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/TCJPA2422235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba79c5a716a9118d6aa85bcc90af8ba161d093e24e9e52d834e8aad06119575d. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/TCJPD2552171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6ae2846844729a58408ce8a7334c88a1b4d4f2ce9077dea74f49bba070b2308. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/TCJPG2556944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x789ae76968f04a221845538e4b68f41d6067d857e89e605b6d90c723b937eca9. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:04:18Z), 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/TCJPJ2522746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef1717f635638f255ad0e102b912d0a9c03174edd6521af7f9f16248f1ffbdcb. 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/TCJPK2500073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1398905ca58aa956f91ac049cb6d2360358db934a3b732fe986d50d0d0cfc0cb. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:29:23Z), 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/TCJPJ2583883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c6c12d315934a5d5e3ed7cf94e52dba7aa564faeabbcc28ee27e5ec6eaa9145. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/TCJPE2557733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55022540a7c8f112587dc9b2aa79d39d17a0b3afc5d40347067ba91453888110. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/TCJPK2500102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b7a54a417b26eda0300d331c633f99c167739ba7d00cf0d44ebdaf564a9142d. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/TCJPK2529601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb9cfab84a2aa73ff2f4c2e86d7b61dd0593488b98d817b394f621cb5b950b05. 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/TCJPK2529753.