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 0xecde9b30fc9f720ba561b26ba629d57758e68aed2106aec24fc3f17c1eae7108. 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/6c5aab34-de01-46d7-8e62-112642bb7ac8.json and https://artists.proofprofile.net/proofs/artist/6c5aab34-de01-46d7-8e62-112642bb7ac8.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 0xe8abf2feb2086940389ced3bda182de77a716a97ad975a0b6292d5729307998c. 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/QZNMY2253749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e2f86e30cbe5f7317811e4eb6fcdc15a248efd54bb5eb2d4af13d2f43580977. 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/QZNMY2253750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x674beec7ead60fa5e706e6a011d8166ee9126836e992ce9ae97301995ddf5375. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QZNMY2253751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a4fb52c9d67b08f9e31185ed63fc4830a4ee37b4a5f568e501eb01c82643c59. 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/QZLL92313911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92310fe7cd92e4c8545eecdd626c17459abf3f16389a66c20211805a714e3060. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:21:11Z), 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/QZLL92313912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e751f7b8f8ce2ac9fbf624ba87daa288de9ad92cc22af218f2420df2805af03. 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/QZLL92313913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3f9646068d55d69c44a887c4448072dfebd18766bd206a41073f6ea32be637d. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZLL92313915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4365512883815462c3230eeaab424e5645a86f663a752eb6549bb67150713a2. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/QZLL92313916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6054d3650be0feddb6ee5e590d4f89cfafd795373a4db12a95e71e1061717015. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T16:23:29Z), 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/QZLL92313917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xececca6f92f87a85202f45c770f646115e8652706d54326eaac14271faa482f6. Chain 2 (Bitcoin): anchored in block 957690 (2026-07-12T10:16:40Z), 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/QZMWW2341793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6435f92f9d56cf8ea64773935b1287731ccdb4d4aa8c1c223a78e8e8d9238186. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZMWW2353866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e5219879d3ac52403fe47a51f529b4b9a175a9ce814896c4f522a6131a9e885. 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/QZNB82329557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6b44dd2d03da58c3842cbdb2e60a95b920ed8e516fa7c3b3728fa4c9bea6c05. 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/QZNMT2391885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9d39230019354998e61423798f016d58760e0841a8298b056affeb595715853. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T23:05:38Z), 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/QZNMT2391886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd03ad9b098352d14a813df83eeb78b036809547f7b876b13ac5bd83a391a3bde. 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/QZNMT2391888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad4bba2a3ba7a903accc7aa4c11396b13b2e6e99b773b20b2a2d6303e9385aa6. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/QZNMT2391889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0156d1742b038b87f6a5458cf0a311ab0a686d2a759f2da3ae595e3c550b36c1. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/QZNMT2391890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x346763638f1a78fbb158b9ad795d187703f97ecad5a894d03bc4de7ed2f4207e. 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/QZNMT2391892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09fc43154837209c7065ba830ada5b72db544d4b379eb07d69abba4009beb503. 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/QZNMW2390747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3597dd5818508416b666c76bf97a1c1a79b174688c89e51c3e2d6dd3707b0a9e. Chain 2 (Bitcoin): anchored in block 957685 (2026-07-12T09:26:00Z), 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/QZNMW2390748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd79fc8541d878791ac528a59159a8312702562d53fcf8dd35c04daeed08512d0. 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/QZNMW2390749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2c824eb850471e4002e8031ef21100432d9f3a30842faf942bf7766483df220. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:25:44Z), 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/QZJG52400736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2ec2929fdc6efcb944d0d3b2a681dd5db251f40bc5719aa60ac32f1ccef717c. 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/QZJG52400737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8072dcd6c33de9931f8a73e23d18566dc9eb83e85e2f2b24163922c47b081e73. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZNB82466981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x785c121913b425bf49b852f037d65ed4aedca0b6dbddded88943fdc3586ef4f1. 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/QZNB82466982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19b7e8148ad8cb47f82ccd0b3cb643aab950e38f988797442d7166201e5b4d79. 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/QZNB82466983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ca0ffdbac959ae880c752bad0c2a894d51caf6a5b1c06c26516e18b53b9f8cc. 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/QZNB82466984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f6278a4fc78ce4f764cdd791e45e1e3a6922cbedccb378495c00fa743c0e541. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QZNB82466986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea5e0761fa4c7df05dedcd824d32e1ba4df0f777df3d775bdb03e8edb760b492. 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/QZNB82466987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc019a8d8a49b58e2e6c08f5f2d062b9d27069f5f10ae6db7e4aeb2802fd29570. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USSM12503039.