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 0xf2d0b3395c6b8089e9cc5b83aa845a0d6da2f921be490461f5563dd6922de3d5. 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/d7133936-879e-49ba-b40b-62a8fe6b555c.json and https://artists.proofprofile.net/proofs/artist/d7133936-879e-49ba-b40b-62a8fe6b555c.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 0x80efae5dd9c40f021872b05ad73c7351ab821dc1348f8b9ac8bdc2aff1318729. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:51:37Z), 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/GXD7V2379814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf391f2084e3b33d6cc4e7bb6501b7df58726843df19dc1aa9d04e61de7f432d6. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/GXBAV2237717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa148f520e3518f7d408d4f966ed4af995cc30ea26bbd86a010a69e9de5eaa471. 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/GXBAV2237716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeed5b039613ad0016e540ca21a70806201e1ea49554d9ec2547e618c4205cd6f. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/GXBAV2237719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x861598602ec0d80fc4a572a030af7f7d5bc52e6fb2dbd3bb3decc287a27b0e75. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:30:32Z), 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/GXBAV2237718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0c12cdeafe392514cddbcde7a2c30400767faf861b33164ed77e223b8051e65. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:38:08Z), 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/GXBAV2237724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59115a1c947fda0da6a27e0feb3c14ad3d058237e7f66e683064cda14956692e. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/GXBAV2237726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d69f4cc04f545c1513bfc5deb1662d9b3a7058ef3133a5e2c903ef5be129b5c. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/GXBAV2237720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ea60042c0ef06e29b66d7ceaee7e675b2381fab8ceb07dc24b3119809525ef5. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T17:54:42Z), 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/GXBAV2237725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x291a07bad41407ed36243a1c95318251d11079e8001ea495aecb3ef299851ba4. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/GXBAV2237721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b45a9dae75d323df2c4a23103b6cac356849dd4f13ba6f961e93388738b7625. 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/GXBAV2237723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64e31c6a86f89a2c51ce02cf20a76a2e83387e33fd5425cf5b6c175a88960220. 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/GXBAV2237722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f1cf07e3c2f7e087976686b25cfe50d2c273382ce8cb5c01001b34a31925e21. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/GXD7V2285461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01c74e435c905a602762e67ccc061352a030659a1e475b588f33618900ee46c3. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/GXD7V2268578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf333c6a1a38c6137eb1042c3365ea0c91a4581a67151f8f426f660de2a55e5a8. 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/GXD7V2223083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9063078aa2100845d47d7aad9d0511a2ddd81deed0a5b92e05cfe0ab9342713f. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/GXD7V2232264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5518c5f38d1238b285b821fe8232bae3ad908984b79671f1dae18f5c058d63db. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:37:27Z), 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/GXD7V2219618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39d9da9b02c058bb764a8c46d9e62d608fdf1e35d2be38ad7deadda2ffa1e0ce. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/GXD7V2268865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4186f41524dc9174199f21ba168960ed30bc4446f2b5f2b05fbc75f45f26bb25. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/AEA3A2408925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53b7b55b3c7c3a2ad81ea63959f9aa9cc79709d7268e35d504e7ea66adcf8509. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/AEA3A2408908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf77cdd629558bd12a13c495d3cba3b5373abcfc89de342bbb7645d683ba4cf1. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:37:36Z), 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/AEA3A2413061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cb064a5296a767f8b3f3ebe0a1d80ab91d61cf92f7c22a3885f7c22b4b39612. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/AEA3A2413098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b6872fecaae238ae3021375e29914280ae1962b3746223d373d969ae2ca158b. 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/GXBAV2570462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaff255e97a6cb7b7e4577e22af629409d9780231fde2a4f5dded3db48cbd51b1. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:20:46Z), 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/GXBAV2574948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dbd9d2af3c2798c4c2b401a4ade25c091a9d59d876805548f165a9bf8ba162b. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/GXBAV2523520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc659fea5bd94f3949511367820c50c2d6a121319a2a4bfa7fa781fd2f8df3523. 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/GXBAV2508910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcdb43178c934ae04c2882561e11f2bad6b0f27367ce0cd1d24d3a583cc926ae. 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/GXBAV2592141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75a0685178a4919b1ec51695754c671308790151e1cc470ed3b0c1ee23ffa30c. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/GXBAV2533044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04631f8d601816bcb68b91c127515221d5443df3e3addd843f9c1e09b497eab6. 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/GXBAV2570319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf7036238124a3b7468a9c4f064f35b9a50b03f635fc9d13b82ae656b85090cd. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/GXBAV2543611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x834c3e5641a6c2379aa4f743ba2d40912e81c30c826e009ce85281ca3aed8591. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/GXBAV2526213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaf6f720d1778e4a1d4279e8e65c0fa5aa4748d2fe38494a7c7a8a0f4a3247ba. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:27:24Z), 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/GXBAV2527039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x100d9269e42244060e00da9202daa9dfec57eef2baa4f6dc88ef7effe5b3579f. 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/GXD7V2581465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f667243cd5d916859705c416881619dd0115dc3b8dafff9f08392a97901bed0. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/GXD7V2556316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x347e141d5c34151616616e1da7ea40c2b41c936f6ab9b4be4c2e1f22dff271a8. 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/GXD7V2591601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45a9ec8bffe6def0e9b63ff152c5a399e8e79736125651f17e47237a451723e1. 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/GXD7V2562535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91c807fd97db84eed42053fa108da250e70865d921f320cfeada3c41291e683a. 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/GXD7V2523591.