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 0x2652ce54a48722a72f42ed7e72bee3c4ad6fe5972b38ab77d4adabcf9278234a. 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/69b8f8b7-0ee1-4a7a-9efe-6e0d59df1e1b.json and https://artists.proofprofile.net/proofs/artist/69b8f8b7-0ee1-4a7a-9efe-6e0d59df1e1b.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 0xc3e690af7c834b3edff7c29dd2ce40d151a645fbc57c91ae71738a0d97c880c0. 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/USA560918198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x691e50f0bc8995fdbc81a51e8fbfb969270c6b1019f60f32c445067dfae053f2. 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/USA560918199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb89807b78b57603a5a15275f8b8db6d5937764946dfd35533e266b1d465a0e9e. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T05:02:21Z), 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/USA560918202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0091344213408a6675fc7f6b0fea7e35ad1eb637e7f13e82bd87fdf0ac47285d. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USL4Q2128372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b8c1b21513346186fc6284b513bb897ae56ac4838e0b7459123da513c695828. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/USL4Q2128374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x400b74bda484416c634af0ab7ab205bad77ed06db64d95cf78ca77f52d273e49. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-20T14:08:21Z), 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/USL4Q2128375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b57dbdcf66969d522db064566e6f927c5990d3691cea7baa2a5df1e65cb2c3c. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-20T12:05:53Z), 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/USL4Q2128379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc377fca39b8cceacf94aac4591b11e50d28b20604be441a26f729beb1dd0e676. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/USCGH2257617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69fdd6f1e7dfbb3cb9f67b26988845e024d9dc50c0e40d40d9db195215d1e093. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:49:25Z), 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/USCGH2257724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4ce5ab5ff9810c3e74c5535a0dccbb4270500ccbee798bd7df72b3a0d96d8dd. 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/USCGH2257575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x911a1a43ccd90ab790da9bb2e7116dcbf0cb39437fb0ccb8b3f5908f55950f01. Chain 2 (Bitcoin): anchored in block 956861 (2026-07-06T01:57:57Z), 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/USCGH2257577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34687f182add080152d5662b7ee5c8e0de930655e91e248c661d4a433f60cc4e. 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/USCGH2257578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16fa4970575b6f59a073835e059c0b76efdaf8e870ccc9f1872d953656562ce3. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/USCGH2257580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68d1ae53ad73b5b961a1e2143c82d67752f02dd320995a66c90ed54c2ea3de7d. 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/USCGH2257683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8d56295d861e43b862eb19f19aa226d0aaddde82584b92b40177b9a12116dd5. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:37:26Z), 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/USCGH2257686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x431082a185eac8022859f67e9850d9e26be0a5f041104f8a9134c591bad92a32. 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/USCGH2257691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43f4c92dfe145182a0685644a2d7fd6b9f52e0c4c67878b9b2b0bb564d4fd0e2. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/USCGH2206959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30c6923ef560b62433c20d6a5a4914abb9274e2b2d3a174594c76b0195e15c34. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/USCGH2206962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fe3359eb6996567643ee838b6ad0b17ec07369c497c4c19522351fd69610b1a. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USCGH2206963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e37a2aa0a11bbfddc429e4195b1f250b194b33ce24e0298e08dbd6053f5b84d. 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/USCGH2206965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb12a7fcc901bea6bc4dd75f1ee8bec8fd6446bd7b51ab24e514d39f700adea1d. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/USCGH2206966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa61c823426b90f5408394d3bb574dd416bd7c56b6bb87ac0cd7fd03513f6f211. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/USCGH2257532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cfcadba2d143f5d77c8906ab859b6a7ae434675af840f039e3c3a532164bafe. 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/USCGH2257535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c125918f711181ee6cbba79853e0924fbdc9fcce8b6ab2caca1fd7acc4d820f. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T01:40:11Z), 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/USL4R2157139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82bf4de0ebcec7f4b56aea8e6afbc72755422600323e5753d2e18448f4d80512. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-21T08:30:03Z), 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/USCGH2257494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d4cb596207ce4e5b329f58807819795b07c5707ddd4629c816ccd110a17f513. 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/USCGJ2202905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe49f15ff62ad11c85d485fa379da6a346b3614e594bc5af2393a3fd41da8a729. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:04:35Z), 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/USCGH2297091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0cea70e6681d166ff7beb827365e32023c20054cf303cf6ff33472678c2ae0f. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/USCGH2297096.