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 0x1d7fc19bf891e41a62d015d4712b9e64f5b31dfaf4756295738fbafdccc1bc8c. 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/0c358118-9518-4eda-9cda-fc257874d292.json and https://artists.proofprofile.net/proofs/artist/0c358118-9518-4eda-9cda-fc257874d292.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 0x3acf95f3af43feb8b2d96d8c9ea47d8faef9e361c7d0b9380dac10378dd35722. 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/DEZN82444286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae5049e941d2ec6a78766cb8c891e6d65723dea00d40ad1aa521b9e788694216. 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/DEZN82444285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93dcb481229e518c3e3a08a1c200da501fe2a9b994a5bc734c85d7ce43798166. 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/DEZN82444282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe124b4f6a1989f0a8b7486a8ed7f990ce9fbb8c3f45f8b2903eadaa57abd19d9. 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/DEZN82444283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd73d165169e0938e6eb35a6636a05525ee28c36b9355bd515dee2ba16fec39c7. 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/DEZN82444284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87daa98344a3d19adfcd309a2a11d8c527be9778bb7da21a90810f3fa7dc3c3c. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:44:36Z), 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/DEZN82444332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ee55d27d80e2721bf3a537ce6ee392b5b759eb82ca6650eb4a768ee5ae2c7b0. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/DEZN82444335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa87ccde0b6c943c02545b1e5f8a28461ebbf0e42f33261ae8757b9e91db7d75a. 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/DEZN82444336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa87ccde0b6c943c02545b1e5f8a28461ebbf0e42f33261ae8757b9e91db7d75a. 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/DEZN82444336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a8544600fd0237adeabc41c52df9b6d95619e1ae698264e3dcf1eba55bd9317. 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/DEZN82444340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeba6fd63fc8af62aec9d6a5205f4686cacf16960c56805cc45c1a279ae7596f. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:02:59Z), 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/DEZN82444339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0adb5a013fb420b4775aa57b367dc54a795e4a1c3ff3b8db4a82f52cabc66d4. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/DEZN82444338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a8544600fd0237adeabc41c52df9b6d95619e1ae698264e3dcf1eba55bd9317. 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/DEZN82444340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91e0b83f0b7e87bbc50b6da807a0694baf132278eea87e377203f457026063df. Chain 2 (Bitcoin): anchored in block 958785 (2026-07-20T00:21:44Z), 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/DEZN82444863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc654f9bb2b6eef214d7f1cd18c7a3e5dddf7f25e5bcd6307e91dcbe858c8f249. 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/DEZN82444862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc654f9bb2b6eef214d7f1cd18c7a3e5dddf7f25e5bcd6307e91dcbe858c8f249. 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/DEZN82444862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8baeec39cb640793f681b5260474aab058b18f963556605b1c5b2a9fd7eeea0. 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/DEZN82444866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7beefa9f7a2114fa47162769097de0f3d84ff9bd54a10b2ef600fb478ddadeac. 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/DEZN82444868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe78067140766447cb86dd74be9568e5702c3bd0cc0144a678db55e4832c01d1e. 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/DEZN82444861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a65463cbfaad8dd6ad53b09f22866041da2f5f7e80a1cc67ac7d2f56a4f5e6e. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/DEZN82444869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe78067140766447cb86dd74be9568e5702c3bd0cc0144a678db55e4832c01d1e. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/DEZN82444861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45fbba754de5e3d2f59b550a46c82392fb0246c6751f890331eb3f9b3c85bb2d. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/DEZN82444864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x273acf8a648ded16addb93ee6204ce49cbf21b6e90a863c5c74252ab73dd0a1f. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/DEZN82444867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2d8f9871f41e823b77af6135eeeca65e521ee436259150f160aee4257bc21f2. 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/DEZN82445402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4582638c6cc99ec545b1e901f223debad4461809bc8f5dee47ba99b5b126d01c. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:27:50Z), 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/DEZN82445398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6545a3724a08af492b5133fe48f18d6d2651820055734bdc25ac3ff8994811e. 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/DEZN82445403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8edef1a3527dd281bce67226f3ea4c20f5306354edda7b6dd953cc89b2cd786. Chain 2 (Bitcoin): anchored in block 958644 (2026-07-19T02:21:25Z), 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/DEZN82445397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03c9f8b6f33512a5404efabc0a2c8faa143f5fde19b437c7b910cf695abc0a2c. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/DEZN82445395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fae1969e1db62d13581aafe324abd426d7eb1e916de3ff3f0a07b30bbb4a1f7. 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/DEZN82445396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x882e28d8834c1119a3ce36b18b9065c9dbbf86ab64561e6d3f7c3ea66bb67207. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T07:08:11Z), 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/DEZN82445394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fae1969e1db62d13581aafe324abd426d7eb1e916de3ff3f0a07b30bbb4a1f7. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-19T23:48:56Z), 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/DEZN82445396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09557ddce30fe98532a87bbae1d56b46a7718a234f827289f71637623e6ae98a. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:52:25Z), 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/DEZN82445943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed10b8d1480b2965490ee6b71743bd0b092085e7a3437b61c871cea5ef269723. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:42:01Z), 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/DEZN82445947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07d05b3b614b0c4c1888aeee9cd716a29e713b257eeae17f656c4a402357586e. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/DEZN82445950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x276f1b5893bddb48eac6ecfd35e53fcd2241236c9bafda0b8609eb9e16dcbc0b. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/DEZN82445948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa16d433eea6dc35d35e322e16d2f807771ec341ac7cf8c5fa8f6df53c70d4562. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/DEZN82445946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b9f7f0f41dc1ba6c2b9b667e7ee8e0c222d6ed3ea28c0eab731ff6678057ea2. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T06:33:31Z), 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/DEZN82445944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c89a535b1c9c5f1cc8ec9f209d10c6b23a6853681e4728bcffb449f972a69f5. 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/DEZN82445949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17e6294111de0e7c579af7747490e060bc21cfd54a11bd6fd69d5676a450a273. 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/DEZN82445942.