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 0xa8c336bdb151072db1e340cc7328c5497640574f73a2356cf69e31fb2f659b6d. 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/60087638-e539-4955-984a-f3f1863c4102.json and https://artists.proofprofile.net/proofs/artist/60087638-e539-4955-984a-f3f1863c4102.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 0x49c393a9625a35b04d53e95ba9e23579c3e220c25fea5b63ff79665e6e8d17c8. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T10:50:32Z), 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/NOCEM1593060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75a0482be8aac3bc45f461ee75ebf9ee2b68117725626c55c61fa75a37b68b68. 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/NOCEM1608020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf36c118f74ebe714109559a231f1e22eb9d041a1a1241fda72d7652ea933113d. 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/NOCEM1608030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaad277b40ee23c7d5f3f38d73930abbf0269b2ea5c94c6e1cc3d1a087ad4261d. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T00:06:47Z), 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/NOCEM1608060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4475a1ddee29b61466ef66aefdf86a72173f3f27689874607ade517d2925e409. 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/NOCEM1608070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4470737cb13c9c38a0c44ec0666eba287e22a795e9d99c2685f811081b72f870. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/NOCEM1608090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaba72330a9328eeb198f6956ac891aa916edb1a7034f7a062dd48805e499e431. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:27:52Z), 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/NOCEM1608100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30d369c118610c06676c0a1b17651f62d4cc12943fb8fcb6e6b0843716c02ac6. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/NOCEM1792010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x738e30cfbef7f819f21cad9dd6fee9822936c029ac9640636da1da6e471fadcf. 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/NOCEM1702010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb06c4b7640a7135e80cbf480d9e8bdac741070da76c11e4152746e1dddcb0f96. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/NOCEM1804010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41a1c1145f91931853f5d342b3a1aafc38c17c8f2e95c7c8c773f07043e889f0. 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/NOCEM1804020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8631098f0435239333337fc22d1b2cb5c664bfab73b52a1cc180ddd513a56b02. 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/NOCEM1804040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dec94589e8e98054746a86e3f877bc851edda4bc916a64874f0ec35d95cef96. 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/NOCEM1804050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7801d66ac8b362f48ec71ff89121cb927f2cc20f502c3e8e8f6bab8173b5e594. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/NOCEM1904010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa592b918bc949d967c83604ba02e6419a22a2ce318902575e4e7f526076f30ff. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/NOCEM1942010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f9039bbb6f3608100eb3af693a56ed0cf208f469801d30a04bcadf15254c83a. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/NOCEM1942020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13b77d97a85d7ec97c92635ff25686bc3bd2cd23e0e5212322eeb3fc71d0aa98. 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/NOCEM1942030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf332b06301e2bf6e30f81188ad952524eb47e00d22a1a9637737b4a0572c7308. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/NOCEM1942050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7801d66ac8b362f48ec71ff89121cb927f2cc20f502c3e8e8f6bab8173b5e594. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/NOCEM1904010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7becba7f38eb219e3c20a0a848c46459a4a5366fa8cc4ec50d907730cae8a205. 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/NOCEM1905010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa763c7de45686c18923c933ff149df9dbb2c0dbd207571fb2147754ce0b4ae4c. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/NOCEM2230010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1844fee45a779dcf4f53a7490905f1f576eda62450f8bc9a627504bdecf26601. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T02:21:45Z), 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/NOCEM2320010.