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 0xa68ce0f40ac5a5cd451ed915109f28f5d95736fabe1cf0c9b79cb17166c52157. 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/c11a0360-300c-4826-a539-fbe338750b86.json and https://artists.proofprofile.net/proofs/artist/c11a0360-300c-4826-a539-fbe338750b86.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 0xf442d08abff955d06bf1b72aedf9ca52c00c0389284fe404f757b1491d00ddcc. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T04:06:07Z), 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/GB8KE2212863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61416dad699bce611e711da252ea92e061b675b8d859dd62ea504e597a60fef0. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/GB8KE2212801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1420bdefd282c5a1cafda9b8a78e246e14cc7136371fb6ba41313f9c10f290c0. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/GB8KE2212791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa142ca0a7368f2af1576e76840e1a82210139cdc3a0843d06fd73126e3bf2017. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/GB8KE2212800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c9c0ca4963c1b680f3a846ca2a27cb1c995ad77f3efdbd61ddaaebb59a6fb61. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/GB8KE2212783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdae061e9f868456542174dda6aa40734a3df2945144c59415be2afa5dc0c8ef0. 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/GB8KE2212792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15c45e75de5b345678f4926aeac12c8de1dc91f3a54128366b0c6756ff0a4ef8. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:03:41Z), 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/GB8KE2215224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59cbafc6c0e0fa5cafa9d74629b9ba77b80852c6919b090ab5df6384af4fcf5e. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T15:40:53Z), 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/GB8KE2310062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b25ad1c31d90b9d76e54746b472db7052c830892a5edcef80592ae3bd7e2d05. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/GB8KE2315387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b54faa0ca3ea7791a5479015b296a22ef80621648abb0183cbbdac38805f5df. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/GB8KE2320575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaca4367aab39d98a57531f16aef2afc250e544bb668e2dbd31c8d8a15007d77a. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/GB8KE2326507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31a78bf3652995c587748ce54002d488a967d77513a2f07fa23fed9662bcea80. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/GB8KE2326638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbff08b645b035d8e95ab589f34b9cdd5643fc87d3e9ce6a0549bab32790f5a4. 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/GB8KE2400217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa839a8ded5115538f4f6dea36eca9d0b3aa01aa7498fc35a77827f302402671c. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:35:56Z), 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/GB8KE2401104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8d350979d8e6da033218d32e082521c1a4b29298402579c53de9f8f9344bfc8. 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/GB8KE2401772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2703808dfa515822afc94aa4d89251ebf680fb2ab4e75540af78a9445f2e5425. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/GB8KE2403757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ef79bdbcbe1c816710526c87aa5ffa622c8519742d7c28a32842af620a49033. 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/GB8KE2404283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5d6c51881e1851c983d275d11dbb1b5e80d8b82b9bece4a54d054b577a9844a. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/GB8KE2404843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d2c6cbd5f61c5e340f37ae7df34c82ed22a799c10f572fd7816a58acb9d10f5. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/GB8KE2406186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ea23bbd6c64af77d6cc25225b5b432b414dc053bc157354a093cc988e616b8a. 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/GB8KE2411739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c8b93188064c368eb6db4bd1c78ccd25cd0c6f8e74e9574ce571ab3913ad8b0. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/GB8KE2412982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52b50c6c34f1dd632e1bc22b2e8c1e84c17ca8f3572f740cdd899a6756965a74. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/GB8KE2418060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3bb2727164bc4d71862b22eb1b9acb20bf6a7c68002684e2016626979e3c684. Chain 2 (Bitcoin): anchored in block 958681 (2026-07-19T06:14:54Z), 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/GB8KE2428749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9475a43ee5e4a38ba5eafc0032dcb7748d506f87854c2e72c4571f50628c8e86. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/GB8KE2502055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c72d2369486a6b5fbaacb8afe09ed5083f8c94d6e8cde6967b66274544b6726. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/GB8KE2502818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fab70a26a0f299e03f6853ef5eef0d3fa9719915cadd176bc1fa8d764211d65. 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/GB8KE2504756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba18128db1ec91cdb142912d62a8a137a1c9834e9f5dc2dc5a5bcf5f2f9ca1d5. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/GB8KE2505277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70c2e5bd973a67fd7dcf6928c100533b773f0de076c647e6da5fba9a4ab0418a. 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/GB8KE2507524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58269402491045d767a70c82c3f76fb95ca6dd07f1214fa6d8d0857f6b08f0a2. 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/GB8KE2516900.