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 0x659d66bd6446ac7202b6b319d562d92583a309c34ac476a7a8fc51cca3fdea6e. 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/c083376d-0eb1-424e-8cd7-9ea7a2044559.json and https://artists.proofprofile.net/proofs/artist/c083376d-0eb1-424e-8cd7-9ea7a2044559.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 0xcf5e70ffe6ea0435f9c8d35a596bb3a437c57e40bd690756d5e304e6958369c6. 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/QZNWZ2217217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6319aa03a04f6364e65bcc1a95321d29ebf4586c8c60e1e21c5d75d961f33ca8. Chain 2 (Bitcoin): anchored in block 958378 (2026-07-17T06:45:39Z), 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/QZNWZ2217241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf534c2348a688be1511683dc4c6cd1ecef262d3a012faa97c5c8457b520ed1dd. 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/QZNWZ2218668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8371e34685142718421202da49de2931c35704c35dad43ebfab7d363e775bbc. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QZNWZ2220225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3a3c26f8f06ef60adcf270726ced99ce13c01fed9dc3102a92d5fd535285e99. 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/QZNWZ2218681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa876610f86c51ea14be31952c1689de180001d0f33f8fb5989da99bd19283693. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZTAX2254380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89c8c498d84db2c2e869b708ee79b4b58f98d8dd024b8b32e218fd14c3eead42. 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/QZTAX2255337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf86968a17d16410225643d38b0ce421ea010c114a84168de6e40ef5e01169587. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZTAX2256699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf830abb73da017a81eace7b5236264adb47c16de3ccc0bb4a8cfc3573a561f9d. 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/QZTB52252640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6be105a6e79edc05234c7f4e2b10e55d651b888c00dadea07f177fcafe821bf. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZTB52253446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2947c6ecac3e7eba830971a71a5c40a9f4400f8866ac95683387136bac194fb. 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/QZTB52254029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b32e5cfb3b3dbda34899a906cbbc26713eb3f20efaaa647c19b10f33bc619f3. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/QZFZ42363118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8035d301c2e0cbb4c8824ac561c4bc47f8c3ecf7a060e50fbee215d9669ecf47. 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/QZFZ42363169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7f9821f51308131f758d79edd3f30d27b89e9ecd45eb6f0d77db3345318a043. 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/QZFZ42363173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf6c1462d79bdc75240e7f365a65c4d8004816322282e0253306a68d6cdd9a18. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZES52321163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6087e71781c4ac655a63eac2a1c83ce66a2e281ca587ecff871c44fb804cec6e. 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/QZES52321166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x463d2925dd393abd61532943a8d37535f45e6fdd8e4d7af141dbf74413e5eb05. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/QZHN62336753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9b31bb6174d9f23b3139b895d0bee441e6dace7e57c3b0e7572cb31784df04d. 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/SE6HN2347725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39ce496f592e37e8128c7f9c315f4d6320155e0d2ed0c8b924f98ef118271e96. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/QZHN62336011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f01369ca4e36dd04f5415adb117cf112faf3cf02dd6d60cdfb4f331147f7d03. 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/QZHNC2339587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe21dbbd71767da0515b22ef01c50e5eedfe2bf2c1ec948f993efe1667f123796. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:56:27Z), 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/QZHNC2339589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bc0109fedf6d008c0aad2108f09a55ec223ee7e1c72536eb8ff7af07d57dc69. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:09:01Z), 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/QZK6K2374838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a7ff4c2f2706bc4c7a083c62c3e869cbc08cec8797d5d131090198a165d1964. Chain 2 (Bitcoin): anchored in block 958988 (2026-07-21T11:31:33Z), 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/SE6QE2356315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59ebeae6c603c90ed36ca3c0aafa38e6ba2999c948f482519766c86ae693b53d. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T18:45:39Z), 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/QZK6P2470122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d2015d0fa929e81ced66220f8feb45f816a79208664196498ac14dff0f77cdc. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:24:49Z), 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/QZFP52457131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5bbf6bbeae041415aba0d69fa106a2b994ce417973bb34d8e320312f62f5316. Chain 2 (Bitcoin): anchored in block 959015 (2026-07-21T16:41:35Z), 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/QZTB22407505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb47f206e60f549408f04ead477d6511f71487f4468235adf1018b77c5cbf8c6. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/NLYK92400188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e71ca61c35c63da90dd90d8db7cc5fcedb7939f6e29463b55eedd587c4e8297. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/QZWFM2447269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb77c9a118ad67e4f9124419782055a5a894d85b0f70be134f01738c9e80f19ae. 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/QZZ7R2415504.