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 0x45c47528d8869e10bf4c1f963caf130e5ac663d120c15baca9b0a0f6f3792f99. Chain 2 (Bitcoin): anchored in block 953627 (2026-06-14T11:43:04Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2fe40a52-607b-4c72-9ecd-ccd514373675.json and https://artists.proofprofile.net/proofs/artist/2fe40a52-607b-4c72-9ecd-ccd514373675.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 0x9d258f13b97935fb438e8efb94e639b171614a24263162c43962f57f2fdb5e6e. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/NL8RL2421052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e45bc5896e5ce592bdfa52aa9123ee32d3e649b4bbf08c68b7f74979ecca63e. 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/NL8RL2422126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf94fd746aaa79e8a0369d533be18379504a577172cdc84b4ad5f26e887c65eba. 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/NL8RL2423407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ed86aae3e0e2b3d72f06d8be488cea50541786182c44d6a40cb0f362218dcc9. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/NL8RL2423517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x703fa87bdb9189674e2b6403af43967c24592bbfe8486a4fa010db7e08d59b1d. 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/NL8RL2423898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e48a991aeaa887c9857b066ef4899e2abb640c89544188bf228851dc2e3bf4c. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/NL8RL2424321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x824c2fb56067257ad8a95369e51d05b54cef6bd3a91e17869e25d2a3b6b53d1f. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/NL8RL2426911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06619e60ad0cf4f9b0ee5670453adcd8fe703ff981267fada2f7d68ac2fc0b7d. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/NL8RL2426912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec9de9be102c6c62e67d0625148bb1120789b5236ab682abb54ec9d1becf43a6. 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/NL8RL2429109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca2b46b9ba5990a3f1b5c97292e90a8549aa3dafcae55b1427be78aaf8092aea. 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/NL8RL2426913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88a51fd69b4d0aeb15bdac8daafd25067c20eefad95bd3816aea4806fec45195. 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/NL8RL2445940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b8501e3ed20fea167c92fee0e2a435d4c6880d7e0314b09c9c32d2ea9b3b0f1. 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/NL8RL2446450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cd53be224f94b8e7b01d7930015f1f93676472351f164ef1463a9117c4b7e33. 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/NL8RL2447453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57b7d3c8ed9aec35ff530dba9d661c944de9ca7a500167417cd46e1c7fb562f6. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/NL8RL2460878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bb0815ef994eaafbb76fd1314af5709509319a31c39e4f2a229fff70548d48f. 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/NL8RL2461678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc113ffaacc88cecf50133e28affc48b87f3cbc07c87f1d8f6127e5232ff8e7ba. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/NL8RL2501041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ccbc94ac8ba41ec54f4d9e0a2ad40cc3bbfe73045b9a69e4ee0923fd1b1fd26. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/NL8RL2501042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cc1a7eed786e8c831777ecfaf61ab2b3ad290e87a6e0d5e96e630a4a573f153. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/NL8RL2518106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38398ae690ffbcd6931e5fa165d8105f8ddf8f47cfec89f047adf65089dd128f. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:40:17Z), 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/NL8RL2518105.