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 0x96ed1b401858783c3c106499d008911aa3a1de6fde51ddc21b462b3dc0b1125c. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0065e221-51d9-46b7-825d-854b573abe77.json and https://artists.proofprofile.net/proofs/artist/0065e221-51d9-46b7-825d-854b573abe77.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 0x847cc29f2325c0d09a2e0bd1ae991f65998df77662e79a7554dd7f4440f9d9d7. 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/GBLPF6677634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34198b12f4f716cd12705505a5e7e3d4d66f6edfe11e39d41d1ad69d2a2d4191. Chain 2 (Bitcoin): anchored in block 958376 (2026-07-17T06:41:00Z), 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/GBLPF6677637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0748f40a6dfb0fdb0acd351fb622d1f898eb03990615ecd397ad32d4697b8b55. 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/GBLPF6677989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d5bdd858607c4ba99230cd945eebb368d03e74d836df2da330b5fd2ffeec557. 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/GBLPF6677991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x501f2cd4ce085a84f8c82c2cca76739fa340fe46f7885d56f28063acf1cb48d4. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/GBLPF6678001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22e15badf9156f6e15227da97b2e988a8339faa3b2be5181ea373539f73a287d. 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/GBLPF6678020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66fffd277a486e5b7e847500379a6102b6456286ee6785d277072904db436a88. 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/GBLPF6678021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x558c40b39e839adcfc33e630da70ad01a4ce83bc25cff543ded296ccc60a01c1. 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/GBLPF6678023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b42560eaab55a1d0f645f413623f588fee8473a919bd8e278b6d79cf79fb9a5. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:12:09Z), 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/GBLPF6678025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb175698cae4a1b95ed497e89d5d8025261d84606e160cb6cbc20875cd936386a. 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/GBLPF6678040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa20b398c3ad0e104c2f60f8d9c5c353392894725a41dd3c07cc22c88bda4c5f. 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/GBLPF6678042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3daf8e5f09da44c99af925d3fdf5f52f1b8f096dce5f7676c8ff3b192c207971. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/GBLPF6678056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb1bdac8617dd691f0b09e9a79d06062e16b74f4aa8b699a02f1e8903cfac568. 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/GBLPF6678059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3d3be4f132845a93ff66cc277f0536d4ba74e6aa4ebf8b28480f96d34a7fd18. 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/GBLPF6678069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5c91d0814435cef24016f553518ec3f5905b1cc793bb19176e6be184c022fde. 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/GBLPF6678070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ee877b2b01413bf70c9b7129df36786c0a77c11eb815db8e662ec2a83cc8c75. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:30:31Z), 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/GBLPF6678077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd437de2504b865312eea485322eda8437572a3d297e23fa6be3fee45ceb70c76. 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/GBLPF6678081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bb3d4b0148e3724ed59c115b9b52592dda0a916d224f57b2c7bf5bcc6812fc4. 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/GBLPF6678094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe344ba75489c43f4dbbff95575c7801eb124b24d1c76078bf2280752440a76c5. 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/GBLPF6713492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x189692b487ea338c8490cc6e6a87e4c600074960c00c385fd7de0bd1be449199. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/GBLPF6725063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc95dc1866e652bb275ad4dd2dac484a0ddf6c6e7be960eb6cf7385f811d5c728. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GBLPF2506137.