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 0x42b3830e585617c116500d13a4ac93572f0f600b6a8d9a8bd733cbf5488dd54f. 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/6e2648e8-0be7-405e-97cc-a5ef298ad653.json and https://artists.proofprofile.net/proofs/artist/6e2648e8-0be7-405e-97cc-a5ef298ad653.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 0xbaf29587d3ae1308f2ea6d6c1486423e736a545fd51a6ed4885931132d3717c2. 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/DE1AK5023800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62bcd7f2b12b8088a3a41bc2ff9c02a2b0f0408ff45d2d447820d911c1c4ab65. 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/DE1AK5023801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a7c96a7203708b1d95e933d16b24a80508d7950e44457aca7f8a196aed94136. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/DE1AK5023867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d078a59086532d2712100b91bd92eef556b16579b73fc2e5287d6233f817554. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/DE1AK5023913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc1d364780dd1bf3475b926008cde41a30d5fc7622dc197db4f3c69ae3a3140d. 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/DE1AK5023985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6cada347f8c7bb88f296390152c637defe1c04c3db1d5c16a3f3e5128d1f66c. 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/DE1AK5023990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa470282971436a8f1e32f9856b07505fdc8d89f90f037f4cda43d75161e599cc. 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/DE1AK5024025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7697b0e190b25a281ef6af2fe49d548ed40ff596c3f35d44fe9019e29053efa1. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/DE1AK5024026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x779deb0e531dbbdba03912f1e3c1f364e30b30aa64f337babf161c34a82375c8. 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/DE1AK5024027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d2910795434a6f3428906282154655875533151fb988b2377455ad35cd7f6ff. 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/DE1AK5024028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23890f8d8b31174fe5402a873cfbc6454737c92ad49ab9253fa6802f3bd31db0. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T14:13:15Z), 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/DE1AK5024029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x288289cc1c6018e8e84d9c3721bc155a00318674685e00d86d11818ae193616b. 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/DE1AK5024030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca0e9ab27062464aedc2718adfcd4019e5c9be01066f59f1b6eca3178f39ac11. 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/DE1AK5024031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8b79bcfbc02967b270051ff46fa3211db3ea5eb90f38b83c36dbd42dcca767f. 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/DE1AK5024032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd96052485f02eb825a497f729e9404c6b437f383b523ce50c6a172acb28df97. 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/DE1AK5024034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a9596e24852e4e93b065e1fd82b6a631eac692df060b0a4f8b1e4312aad177c. 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/DE1AK5024035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b6d9515d83b2b225d5f0a5b87dfa27558ca61e08dc4da8269b9edcd6747f76f. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/DE1AK5024036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbfdabb57b7c4c9791418c4b6eb4b8bd0565e74efe2019833e5950b4526f304f. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/DE1AK5024038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2032c6089a49e0259872077ce286eb284660c27403719c22010fa5745a778868. 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/DE1AK5024042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d9620e13489c539147e80082d3f3e731917d923693311d7f84c4f68d1ce699c. 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/DE1AK5024043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0819d59b22301a5b766e8f7adb66cb446ceef8065cc7efca2a73d2a72ae8f287. 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/DE1AK5024044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3354125443c95ff388246fa536fa06fd495aba7dcca624bdeaad129c0524f3f9. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/DE1AK5024101.