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 0x0524df003debe33906dc91f48f8248d0cafd528bb92e4f1016af22a732acaf30. Chain 2 (Bitcoin): anchored in block 953808 (2026-06-15T16:45:15Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ee17ed22-ea4c-4644-a370-355e2105c451.json and https://artists.proofprofile.net/proofs/artist/ee17ed22-ea4c-4644-a370-355e2105c451.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 0x4e5ce358be78f28c50def41b30ec2ee6597ab523a902d38e0e89e1af5eac4f98. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FRX762329729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5951eda7618601d5c46af9215f1ffe51da9c8538ada8c30188fffa79ab9a352c. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEZC62113845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f3e8c1767530228142dc5ecc8a1e3627feab376df6cb978f135f40edb0bdb9d. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CH7812194851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc08038b18a072af27c85e2fa71df694071d0b4c35b7e7406847212ff3943d4f. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/CH7812074048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30ed9763d8c8a0fcd0889ef3205050cb964d471a3eea0fc268597ca046c5f3e5. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DEUM72006853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06f8c48b3c24d6fe6b0136ab99147d26372d740eabaa52c09a00dae4dd02297a. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T10:27:28Z), 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/CH7812064456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7f9faaa7788d68cae34b3361870814200d1b9d34b6468dacef087533d861e8e. 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/CH7812060604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1ef8b717cd4ab4d70e6b9d44d9ddcee997eb296945388f647966600359bf98b. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/CH7812059222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf299fce9e74863ad57967669bdfff786ee3934400d56508803a526054936693a. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CH7812045177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c29a6a6f7b032a9b45014242ace9a8df7f7e642ac85352904fbeb63fcd5a614. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/CH7812049945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03e16aae3643ce3dd088805bdab3dd468af3d749b1226879e6d1cabeb8d9790f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEA621900992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e084bd4eafbdf9ecd51c4a8a13eb864c244905bdce4c87ad851d467571f11d7. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/IT4OS1900046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a87263910a9d89a2e8f29ba8f18b929d7ca29349372209435d0d959c4d4142b. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEZC62156247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf91286ad078a869904c69180911d5acdc2e5464283de2f312eb61c3750f92860. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEZC62156251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7966b9c1f09b5f2dfaa9dce66ab2c1eb853092601081c9b0386b843bcb81014. 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/DEZC62156250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86f2b28fa37c766c77e0a026d5d26879db149a380ecd0dfd2f665e620876aa57. 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/DEZC62156252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ba5642475ade4e29a32ddce0603229b703135527919124137ae0991b1fa9428. 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/DEZC62156249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6dab7518ffa1ac37f4eeedc73d7d83b39fd3bb42834bd980868ae48302a8c4f. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEZC62156253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe95d990a50a696bc8aa7fb74901132e29386e4ffb15eb969de1240de56d5d6d9. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEZC62017522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02eb6f774fb8437faf4dbba108ea99d38d386ef71776ae55c08fd51ea4a10fcf. 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/DEZC62156248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff5aebadd91fcc55b33632d7b998f63f2a08ecb88a983ec33e5c6a4658300369. 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/DEZC62156256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x509eddef3dddd801e01f963827ad816ca7f232bee32654f8b63216c5ac554da7. 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/DEZC62156257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5d14c77c1b24ef0e29e2051c0a30e070edeb986d1ac6e5f44573146036459b3. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/DEZC62156259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf80938674768b26e779da55aeede8d538a91ab4908b715d557ca4ebbec8d2ca5. 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/DEZC62156254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2feb0f31b973deec22e3ce8c738dca955977a807b005328a1f1187a56acbe147. 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/DEZC62156255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbe6e9ed27b3be3c0a3af1fa9fa063b870c2bbba47961de8baec0c898f411f7d. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/DEZC62156258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97280a87b8908b5b4ecabb2642514fc631ecd890a8b6e44332ccbfb5b02ebc39. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/CH7812218753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad2ac273b9f1099f3cf191eb7636e2959f136275b4eb85d80aaf51ab5c7e18c5. 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/CH7812218754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde1b96f450600454864b38dd8c7487573085c3e46e6c087b8a7e17d0ee00cc35. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/CH7812218755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb010ba7d7070895b8642e2f37e856dd6bdfc303d8be2bceefc329ffadbed009f. 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/DEUM72007030.