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 0xce2439ad5609d0f400996dbfec088b3e77eeb914e11b58b0c1ca2704898877ea. 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/bbf01437-0ec7-45f0-ba1a-6ceac15ebdb5.json and https://artists.proofprofile.net/proofs/artist/bbf01437-0ec7-45f0-ba1a-6ceac15ebdb5.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 0x866c983cdd4087eff4b9eea23e97bd6b883e84c078415dd30461e95275304bc1. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:45:05Z), 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/USEP42248007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80298372f2ed11364340773c2ceb83427bdf8312338f690e925d2351ec0dddbd. 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/USEP42248003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x389655c149d1d8b66a9aec9e9ab5e853c66f4658e6f29b7cea6fe934ec5beec7. 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/USEP42248005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x361b30ca95920988bece318af63b8ffba7b5a59417118cee798326679f602c7d. Chain 2 (Bitcoin): anchored in block 958696 (2026-07-19T07:45:31Z), 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/USEP42248006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x866c983cdd4087eff4b9eea23e97bd6b883e84c078415dd30461e95275304bc1. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/USEP42248007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4704059e375ea0c96e482c163c2514ff362167b68589d3afc9f6f935c04e94cd. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:59:43Z), 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/USEP42248009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0022536a72c01b12c23f49092e93a41e48f81b20e961913ccfd135695a9a26b0. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T03:33:12Z), 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/USEP42248010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7d381c47acecf09e3e28b93aacd0c28cb9d271cd1ed9d08ddf2862832e6cde4. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/USEP42248011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95f5f954619ab8eace09ce25095c67180dccaf4a460e2441cc23a629e3e29728. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/USEP42248013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71782e691a1b188d4b5530512183c4caabeec36ccb36679af0ee11078c91ccd6. 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/QZK6Q2499882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd39ea8939ea67387dc8ad0783adf0cf5e8e2c17e5380adac0aeb749da714fced. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/QZK6N2481611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34af9b16170f3562a2bdf68a1c9cb573b4db869e88eaf4e53ff33552fc5a7ab0. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:51:06Z), 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/QZK6N2481612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9d61ac4aa7946f5a426409c5706827e3829a256a8a6bc2382eaa9f527c08b67. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/QZK6N2481613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4787e92c4328e853c6e2dd4f3133837134eddd6e1a870ae9f1480b1dbc741348. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZK6N2481614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2582e3be563b8836a12bbe2270b5b1104367e748d4c740f5e76a772dd01fadb. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/QZHN92455174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6502b2c2b7e815144902658b1fef13ca754b21bf174549097bbd2eebdec9cd77. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZTB22581376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a129e42aef1644e7c62fbc66c3ce006b881745ea9cbf55b1b30f6fcb8727080. 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/QZTB22581377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa56ad7c90f5a4d2643b5e6b49d4ac9af7300a14dc525981e200daf84aaed40a4. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/QZTB22581378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x682969e068b5f4e0d503a3869cae0843413a320b31c05305b13917384652f74a. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QZTB22581379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf33ece980b5d5f588168b97b965572cfe598f09ab99f99dad98bce63462cd8b. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/QZTB22581380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf6c7c1351f2838c42a91cb7a39a313e43959edc75dabf0926ceccf6d423daf0. 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/QZTB22581381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39628bcae1bbc387ff8295840dd0f55fd3dadb53e1fd7a51f6d43095d4bc1298. 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/QZTB22581382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5c3af53482a34c62aca1d8b684096982e7527f12a67972455c77cc8fbccc11a. 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/QZTB22581383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b38897a610fe5fa6c66981a9753d643d200aa48eee4c8327968945dcb3f3e02. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZTB22581384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ea9858c46055f89fcf5a71f01f1877a53dc51e1ba15235eaf10e49f86be74ae. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USEP42251004.