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 0x2bbbb820333fe9b4d3b067179799ae007d9b27d7d569e8eecdc81a4d2c0cbfff. 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/46967eea-2e04-4232-8cc6-3694ed313a43.json and https://artists.proofprofile.net/proofs/artist/46967eea-2e04-4232-8cc6-3694ed313a43.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 0xbace32728eac8a2657700c0132682bcd5ec3f85be93f343c041efad7b5156c01. 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/FRX202290585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3b5a1265d553764a16b24e45325556ec34190bf4fef43cb28ae40b0d1053d33. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T20:13:58Z), 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/QZFZ62255540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f2d1437ea39d03dd5088f32193234ed93f49d9aa71f113fc687d6c54ecfac3a. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:44:37Z), 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/QZFZ62255541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7c3c3a5f81771b9aada04dbd638e7a3bb7f21a12b59e9c4795ddbde478aa004. 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/QZFZ62255543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x386224274fcc2ae58747752ae73fe418bf82320a3425dbb8282119a64360fb7e. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZFZ62255545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcda6734557db9333e34bf6a65ac19c8d5e64ea147001d716e22147c027fbe93f. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/QZFZ62255546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb5dcd8313bd476a2da051cf12e65db98f017c8d342627d3b56aa30bce891c58. 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/QZFZ62255548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bad78413ecc363e22e3abef76619b2a61e7127f4773b9407d1393a7de219b86. 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/QZFZ62255549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd30e1aa81136b47e0b7f90922189e2e1ac1c44b8afcb0ba4f3eab8a72748f4ab. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZFZ62255550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb58911d993fee8c1dd61e7c6fab4eb5504d832d1a07288a9fc3309c9e70ef85d. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZFZ62255551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaf5330354eda42918bc4bb2c3784d22742e025163456a562e10945bce7f2d82. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/QZFZ62255553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e506c568c6b9099a65d339569939c6ef1be67ec5cb9159e4cf1b023211ce603. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/FRX202274253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04797aeee8d2076ca802eba6c823255395dc7e1f53b845af1f71a549dd546a5c. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/FRX202274254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1366923d94435f6013a89a8832be0781b8b256b89b30e540f8767d0e10cc4bfd. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/FRX202274259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc16c51ec07315d2095be9544d85305e20c185394f7e05e4003d768969358164. 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/FRX202274262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81b1fe5991ece6a1bf2fd1c09372e1577f7e27d11d655c40372ae03e1fe08776. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T04:17:36Z), 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/FRX202274263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b573ca9ad4e62da129e5ffe45f58b6be280e0aa16b692795a06b08fc45df1e0. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:07:49Z), 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/FRX202274266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe23b204738db8c0d1ff77928c4f53c47bc9205343420ce76fd908e3205eef7e5. 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/QZFZ72215816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe006a536acddb801a315898ec4658f7c64f6e5b5fcfe8da33f548f417b94bf65. 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/QZFZ72215823.