1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xf07b6790c2ac3411846583276c192e2717913b86f6153cdcebdaef9f7275ee70. 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/bc35205a-1759-4dca-b32f-9297511c3ea1.json and https://artists.proofprofile.net/proofs/artist/bc35205a-1759-4dca-b32f-9297511c3ea1.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 → block OTSBitcoinBlock must exist at that height 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 0xbb601c0a5b6b2f0be71b8d6701fd0414bf7d0b100a614defd04cc43335f3dcef. 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/QZES72299000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbecb93e96e95ae56bddbbd9b27a815a38dfa96fb6e9f7d4b98a9d25659ec8458. 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/QZES72299006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae0849e0eadbdc71805c5d8b764f5eae820ca9b6ee31f25b9a7c8b79ad355eda. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZES72299007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x855904a241e9c44949c31455b8a8fbea7a170f75b0b94a1e40bf6265e8fa5e07. 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/QZES72299009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x155a4accc8d40e42f280faa413ccb6df920ea9f334983decf73603c3c478e77c. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZES72299016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaac289d33d1a0a40078b25cba8c656fe1c7b1e33bef90745dc21cb030507c1f8. 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/QZES82214078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eeaf4ea86fc97a4f28006b5cb47d3915b758afbabda728f0ebbe91ece64ad57. 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/QZES82214079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e4e4056c3c66462df907c7bafda3d1ae3e72ce65043a6eed17007a962ee9eea. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZES82214085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa902aeaf7ad2d71471a82d991a7168f8da6d81d65a0b969f2768f6c9262ec487. 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/QZES82214089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x697f56758623b97662abdbe0ac625f3624ba99ba57c938ff02cdff3c3715d901. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZRP42284113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cd58e272d868c74b1ae7f3c8771a592202a9307f8d15c96458a73397a68ba3f. 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/QZRP42284114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a90d097819a1862ec02bdac2e407c7adf63fd388bba8d55a7468342cac9026f. 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/QZRP42284116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd519d90f004207a283d2ab6c33a8a7ea2b2e01bd957d1c1521bf70d6b19b26d0. 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/QZRP42284117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d49e8757455f8e2f8afd6d40e8fe69ea088d64c674695bfcc389376e16fb2af. 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/QZRP42284119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0775d93cad51c20d8a5fe98579a0ddedc90434d1511047f8a501811bbf9f163. 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/QZRP42284124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77be704b29cba36ee67b6109d24d7419ef97db294cd2ed5692f2f07d32ff0128. 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/QZWV32419026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89e4ad1293094fac59839c39a137d1775bf007bd384d92faf94d1e1cfec28bce. 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/QZWV32419031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fbf41f3a4f1de1b5d81bf198ef5427c00eccc473d274ec9ec998c46cd3c588f. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZWV32419032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x518487b292089b0ea0e5a8c98272ca5aa10202ed78cbe95663c6a2a560679635. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/QZWV32419039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e9c84003c5baf45b30649bea7b27de4e3cd7b2a2d1a6a8089b28d75459c8fa6. 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/QZWV32433084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55250be9811e801ba80b4130d019aa6a62321ada6192562f7e0c23e1a0c73bec. 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/QZWV32439007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11995fd11684a189d58f8dfb4bd2183e51b4463ae757ffa2604f6ec4227a55ec. 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/QZWV32439057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15d764b144170ac6975796b226859669fedd6985e45e867b12ad5db6501890db. 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/QZWV32439059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d6a93c46fbfea70f0ad720e3b86d412d941034ef7f46064d7fff13d629fbafa. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:32:34Z), 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/QZWV32439084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa78924d2cd2b9a6dc9c94d95daff581cf6e6e39d6e766d42d236cb940815dfa0. 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/QZWV32446926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae68a936754812267d2f7295675ffec85d695d3258331f6c9bf49fe057d8fcec. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZWV32446929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0a504e77b7677c4c5c23d88d4f5a5bc0e238ff15d600af5e09eca5de5226571. 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/QZWV32446930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1823f0000e9626dd5149e051e25840ae7e180ee2e0698834c1ec9e42fe86ff4f. 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/QZWV32446935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x871a7c21ad1c57498e5864dbd61faa1707b82492450f5984d593ce7722f2c375. 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/QZWV32446946.