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 0xb1803619568ce09d61447a2d2091dbe50eca0822f9e8c47c795b503d5190e14f. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f3111d10-b639-4f03-8f94-0919cf87a77f.json and https://artists.proofprofile.net/proofs/artist/f3111d10-b639-4f03-8f94-0919cf87a77f.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 0xf7df9d54636e200d34884403a1bf3a4f0cca5401967cc2a9e449b14990a98704. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/BXCND2400688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9e9f5cab5e170b413a318a2104275404b4002d54afd32c5c236fe8d00de8a6c. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/BXCND2400689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc8cd31a1b28702f5b99e2c47b8863943cf8f7b7a11416cb2b71d3b6f860245f. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T11:01:44Z), 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/BXCND2400691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x129749bdd318ce4c3d1e6478a9ee58e8131c6199dacf45b614d2f1210932824c. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/BXCND2400692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x575496136b001d2899ae51fa131c392e525f643780928e3a85ef57a60a3d9b9f. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/BCT3B2100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91e98bec758a31f427ac18d35545126d4e0ead2e52b4e248c15cc7a3f02517a6. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/BCT3B2141111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43f0034e346d7971c8222552e4f9155f640c6a1aeb4fdf3294090efbcad61d40. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T03:23:45Z), 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/BCT3B2141114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6935d1c711bfc3197a1b3d72dd9b0c3d4862f88207edcacae52c16f587cf189. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:11:35Z), 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/BCT3B2141110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc393c47d1e20058659c8b350849356febf62370d5f35f81fbdc55c4be823358a. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/BCW2K2400081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x275aba2989794191938c9241d379cd2bcca3b76e2c7b9c75c487b5d816071093. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/QZGLM2327828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2ee0537855ea567179a0925ae9ee75f0f67b80ee50e1f0e8903534ef8ae8dde. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/QZGLM2327870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x984edd2b13f05daeb0a9f7c97f4561eae171d1c3a9a87654e6b7d872dc2d86c6. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZNJV2335004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x460d16cdf877138d04dc6ed4cd45800746269a7f23a3b16541fa6b64f04675cb. 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/QZNJV2335006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0fd7e9fee7d6a16f58548a1ad0fb861646855f7089c13882162a8e960c7311f. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZNJV2335008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cdad4cb08a5a53da2c1232654eb1ab800bd7ab3b0f1cf16790b84c7bfece44c. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:57:21Z), 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/QZNJV2335009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0641663f9a67d5670b2c8f78d82976f1afdc7facecae057572e21a26cdedde53. 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/QZNJY2393617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa41e78c32f3c8694219b63921eea13a56158c87995d5548a5ab46f1022a7aa98. 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/QZNJY2391556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc529717e71da83900ba1003fde3cd06dea63e598f533badf6112264c0599d211. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:05:03Z), 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/QZNJY2393753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eec3ea89ce00bbbf3fa2918e1a7dfa85a529935843559a14fc9f250e8b6b04d. 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/BXCND2301108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x298cdf7b3f7b360e337e3a339f3bd6c9a2a657a78f6f4a44e0d4e6fa723d2317. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/BXCND2301200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93fadbb0149fb30e29ac7c466cde889a31efc58b717bec8c9db8d908c4a23179. 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/BXCND2301320.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d4ed7cf9a662b3d4d0206d50b7d571a07895a97b67d99f14af5beac38089193. 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/BXCND2402665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8a89eb87f86325ae17f3b7ce23100ddd670374d1f9c332b9380a58438ba312a. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/BXCND2502002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50e9468f466290f77cbc6e71e508aafdf6e15ea906a7c235c696ddfc2b662d8f. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/BXCND2502001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3b4ec34c3cb9cd6ca6ffe61917f78eef7374c3898b76690cebda3d927146852. 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/BXCND2501998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ba4cb9725637efa26eecb1b29c7f21deb54d1978cc9fa71413b47f6477d7ba7. 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/BXCND2502954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59cf0f49d28f3c35ae13714c47a06df93228f0db5449b508b258056df70d5f14. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/BXCND2502955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb49c7d8df2a407f91765180acbb9db7071e52ee216a29aea46a1dcdbbbd80c79. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/BXCND2502958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdd17a439c2783ddf220b1beadb1de4c28082bb3f57307f31eb780dbd665104f. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/BXCND2502951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde4482366e2ee40c5146ac35c6f5e184447bef82dfdf3ddeb77342fc188e0f62. 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/BXCND2502956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbba8d3126711591983a94b590ab2136ef06f5a9494ccd12b3da083e840130676. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/BXCND2502950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b5bdc2f740cab6b9dfb587fd2bcb2ecfeda977aea50ff143a3cd81598e1a0ee. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/BXCND2502948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f20bf49e018f430f68c40b24473ad0a29b4ce6efc164686c6fca3589717e6c7. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/BXCND2502952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccf26523aa389496fdfd10d8f6cc98b4ae3ae614e35076ed5fea8e17fade4290. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/BXCND2502947.