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 0x280762dc2e1e75602b1f6d7c9b2d612f1b09f459900c3aa8cbe32e7fa30e5f5b. 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/958168a5-468e-4cb7-bb6e-898cc3494c7b.json and https://artists.proofprofile.net/proofs/artist/958168a5-468e-4cb7-bb6e-898cc3494c7b.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 0x2d7a4b4980c6d78bd64acb0a46069e0f4961e079dd3768a2d31e2f5c335e663b. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/QZNJW2491862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28ab67e372c84bb07c1c5bb05c3908532b02bd5e0e17f748339688e460d46119. 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/QZNJX2404377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5d99dcfe7e009e64f9d0093e8dc761b9bf247274403edf269f4f363c264b11f. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/QZNJX2419372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00d19bf62e654fc27a455047c7644693ac4fbd424e64d7ca999fbdf1567284c9. 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/QZNJX2406978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77b4793502f25f8423e5fa6f8fd16ca1b505bf3f5ca0087562ce3e49862b7846. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZNJX2431111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d10b81f6814614922fac8ff428ab1206985618e4b79bb2c46885e9a5a6c8a19. 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/QZNJX2433863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1594deaa91710e6fbc29449e5ba8c3065fa9845a1c87752668dd59fa5e2c798c. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZNJX2433779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe65274dc2968d8fd5759befdf4eadc6297a39a1deca51470756b3867f7f5c1c. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:30:22Z), 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/US7VG2517166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x501c1187adb75de582098007204d146642db3b2bca979e40b7f41333965d2897. 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/US7VG2522572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8daaa0474af6385f64bfeb1bf738385f330224aa6d9c1d078b9813660965d76. 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/US7VG2519989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84df994018c2006226ad10aac71be6b5ae2821519c7cc66191133f33b0632287. 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/QZGLS2561159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa62937baec0dfe33db7e3a194aa1451e2fcb43345c4caa10159a44a178875f29. 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/QZGLS2568413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42837c7bf82ee2e6121db41c7af05536df0a044a54f674d0c1c29b591108fad9. 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/QZGLS2574236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56707cd9f0cf6a71d05704d1a231751902712a9ddbc723817f85485a593191c8. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZGLS2568285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2121b06aee5bcf1b889899ca4322603c0dbc03b30f3a907fb5227e535865342. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T04:27:56Z), 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/QZGLS2574229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6c5281c8b1aca9fc43a9aa46347a90a76d1f3528886033872b1a7fe9cd1ceb0. 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/QZNJV2592462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb461cc71c658c53e0807e32f46b17ad41e675aa7a6d4f18dcb4e52965340537. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:46:38Z), 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/QZNJV2594420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bc3a8273d55d3d0521ef63de3c512f36896c2c26b742a5cbd032f1b773d0a53. 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/QZNJV2594118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f54f5de6b553c20f6633a3bd9011fdcd4ead933aa131e75a93757f15dc99f77. 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/QZNJW2540646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a8dbed9f4f56dbd467ca40cd88640b87219904b0a87cbf19bb45ae535eda3c5. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZNJW2514848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5a459e48031931cfc86d5e658b49e69dc1bc78f07c6eb297ed616bb56324648. 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/QZNJW2514863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb25dd91057469b9c02f5e9ed81bbf9af143cb59fd4193116a3ce4311d916700b. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/QZNJX2595427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2a20fb606863cc8d810087d00e64346e23141bb98fe15336e26600d3144731b. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QZNJY2527490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe6ddae236bc94316f7089dfc417d2206ea84545d5dbf43f29cd1c85570d99dc. 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/QZNJZ2533908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5dcae1bcdca87b98ff9f020f9434a71884e6bb2e6a9e5dd1a230fe9b8789dc0. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZNJZ2572230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a9250e5ff3f085f8f227fadc5a158bba9ce69b609fafedaa9de3462d5b55bba. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:24:52Z), 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/QZNJZ2584000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x374cf78210982e1515bb28a8767b20bad32d3fa96a4be3e0e70727c86388b3b9. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZTPX2501437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2f2b53ed6eea7afd3c62eea1c50ff1760a504a7ae4678fff252e27ed36b07e6. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZNJZ2567884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8f333f08db706ba5a06914247f5ad96fff94dd27a0d831f1e567d36a48877e5. 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/QZTPX2521853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb502f0f1d149f79a4791eb871987ea6b3be48a6083faac356b7dddb94eb3ef0. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-21T08:56:42Z), 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/QZTPX2521849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dac5857647485db743050307bc75e18ae2fa5e6a292087fc972df7d5a162ac3. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:26:04Z), 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/QZTPX2561954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff02390c6c92c705dd10040334bec24723e7fea6e4733971454af4704a8667f1. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QZTPX2521847.