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 0x22a61906e2c4b57a70b66efe0af1a46521ce2040966d77ccf70be2c9a2cc3029. 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/d3abe0fa-1dd2-489e-b206-df82bd43acbd.json and https://artists.proofprofile.net/proofs/artist/d3abe0fa-1dd2-489e-b206-df82bd43acbd.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 0xa6d95f2eaf3c2b8d6b72230b29c841383e74f5ffa8031da443239cb93b810761. 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/NO2YL1101110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed7d239904fff131fc8bb20085f5730aeddca477f31beb394969d9c83f3b06e6. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:09:13Z), 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/NO2YL1101120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4e2547de22eb5008576bb1db0be4541e1f271baaabf39664363ef4a083158c3. 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/NO2YL1101140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b88cb7eaa2993d80d5f1417c3f66436b028da62d3926f9a53a2c446e571297c. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/NO2YL1102010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a947a412298a3cdd98989d72324664f8ba136a638257e969e1a315a67ad215d. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/NO2YL1101010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8365ebc07ae57d69c12dd55a525a165edd795a101d520d178f290729bcf2373e. Chain 2 (Bitcoin): anchored in block 958493 (2026-07-18T04:34:53Z), 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/NO2YL1101020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa10016bfe94cdf96de8ee3e183f729a409c10d42ebfffd1f311512d06a38372a. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:53:57Z), 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/NO2YL1101030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0322a2ec53dd13a79d16dc2fdf6b24221e20edbe9ae159f5ba4b2d9c0deaad98. 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/NO2YL1101040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e2ab5f513a05c4f95d4a318437a48c518c8fc053c112a7bc48c7e994637c937. 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/NO2YL1101050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf120da964c1388132d3bfd8b400990cd6a9ce85b07beeb2d3af9f8ae89df91fd. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/NO2YL1101060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68ffbb34831741b9d0b34ca32ef827955d02cae83f31c34153f0f2ae7a043b4c. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:41:49Z), 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/NO2YL1101070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17d13c98f51bb05aaf762b402e9e6c8fb0979d103c55c946a589b95946ae59ee. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T03:28:45Z), 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/NO2YL1101080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d9e941265b3700efdb0b68620cc45bb7294f43202141c006e9277048a4b492c. 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/NO2YL1101090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a0b5e2b7361e3d838d3eb71a6990295c733d1461cb7cce6d2b37ec689538189. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T15:47:53Z), 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/NO2YL1101130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d9f168e6764084e9c096e02333564919e1cd5265fdd11a7c30dbeb4789c3ee4. 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/NO2YL1201070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa081807fbcc5ad3fa656a102f737752c67189bd0e256663b5f577a0936e56f30. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:14:35Z), 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/NO2YL1201080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c5cfaed3a565ff3065b73d195a6e1eefc6c9d5f8f2e73a9bb48f0158ccce03b. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/NO2YL1201090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27d0f97af15bd7f69ae13636886a6004caec57ceb1a60f5993e0199cd51cae17. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/NO2YL1201100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8201656b03e2461c30513a75178487e338472e28f9ff6b4a6c14cc106c13da23. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/NO2YL1201110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90f19efc5157a795118c2c27ff89ebc09944a0693b0cf4855a4aabba0ce0f14e. Chain 2 (Bitcoin): anchored in block 958920 (2026-07-20T21:01:04Z), 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/NO2YL1201120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcac75e5962f07635333e9669ff8dc70005fa35e0bbfcffd0515a3b7c3381f44f. 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/NO2YL1201130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ec394599657397c352c8dabe70377ceccc20e3d65e7b53d48d8cd6206997e32. 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/NOWA81601020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcb873f9b9532de2e0dcd6006c036d1b6ad0aa81c49e102575ed1937bbe8e195. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:43:29Z), 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/NOWA81601010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b8c70c25d4d11135ded9921ae0d0e4fbfb1145f1a84931cc3e75c69a3c25450. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/NOCDJ1705010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6324c7ab7370f8befbfa90fd520c9556813f5c3726608a831c1e14cb48619fd6. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T03:12:23Z), 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/GBKPL1951580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x016197e0b66ff7795c63f72c006b3ecb8a014bb025d34dd86e481d3a55761c0b. 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/GBKPL1951583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4077e5f312d32ca0e31b8b54459723a5669dca8a1213aea611118d97eac5f58e. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/GBKPL1951579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e96b2f9aa9069ebbc2506c1e478934f247acfdebad879bc99ef5de569f610b6. 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/GBKPL1951581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ed91ead2d80a5293dd13db49d64240fdd0d8d66c048c41b14350e0509de885c. 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/GBKPL1951582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf79af60e31630400256cf35c3fb503875a5f61d408a94930e97de671cebeaeff. 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/GBKPL1951584.