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 0xc0f620dccb0782e2148226ca30e8913e562f834b135eecc32df2f05d60b54b34. 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/51712b58-688f-44ee-b44f-b4c6b38a5fea.json and https://artists.proofprofile.net/proofs/artist/51712b58-688f-44ee-b44f-b4c6b38a5fea.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 0x70a74a180cfdbb4ac795afa3b10dd38446bcea3ee2ff034c255be1d60efd56ff. 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/US7VG2247701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7754473fb2c9d6cf6d89f72fd9b7fe744f83197e4cbd5ea899ae730c76c31c5b. Chain 2 (Bitcoin): anchored in block 957603 (2026-07-11T20:26:17Z), 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/US7VG2247702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x505941bd48d55aba17fcba71dcfb2999c605e57eb934e28e0f46fcc4604f0e8c. 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/US7VG2247704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb101d14bf98b3a1c1d222822dce181fc5b5501579ff8592c031ab03db21ab3dc. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:56:17Z), 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/US7VG2247705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3094c97872e1ea2732a3f4afe111697956f33f7b5689147ef95abf1993d57780. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/US7VG2247710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c6d1476d2c872c895674f1ba5063919f78bd388133edd51a870eb3395f7f52b. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/US7VG2247711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa4ac62b0d8d7896ac627dedb13fcce9301a0ef4bc7465f8411451373cdd98f3. 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/US7VG2247712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6b4a9f779bd8d38a366d0502e6bc1f2f6a0d9ce9ca2807262f810be59bbeebc. Chain 2 (Bitcoin): anchored in block 957599 (2026-07-11T19:42:17Z), 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/US7VG2247811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9e473952b76748ef5f73b2b78e223031d1773cf20f4ed1ffb85aa93e48335de. 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/US7VG2247813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11b33384d6c7d2965bc67924294ec51bf382607f9c3d90737949f1aeacbbb075. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:00:52Z), 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/US7VG2247816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xece2f7121bedcb303aa91b5143ae4c49941acafa20a54983de38f5e1b6e7b2ef. 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/US7VG2247817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec2a090ec81c1ceaeff417556a2762d97b459e8521eaede1ed2a811b484125a1. 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/US7VG2247818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9674aeba14ac13d27a7c1afa0d0dd5c86d5280a2caff4ef25fcdbd9f5c0af087. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/US7VG2247819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2725e5d6cd2da3dae0ae0739d0e6305c0566e473970916f48285f740f4883eb5. 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/QZHZ62120626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ad8ca3a58689d1ba6ad377f8e8166c3c93a03ecd6cf4a75d914892c1e0c8bf0. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZHZ62120629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bf7fd33c9114b4e441a2c938e6df2f235011a303781b401a8a6f21b3fc020a0. 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/QZHZ62120632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3dd6511c4bc5ddc7b5df187ecc4e73514f20bea72f6a980e1717d053cf01d7e. 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/QZTVM2109003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3f66fc28ee2ea4c52f90eceb6f98be5ba00eda8f975578eaeec7389804fc3d2. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-02T21:02:00Z), 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/QZW9L2248459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1df4a9289f69102b99d24dd643f7fd33cedf0ea15ce86f1819adfed9ce41dd94. 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/QZW9L2248463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x353ff5b7e2c9b12b3bb63bf7575bdb22f3be4e3aa7163948234f2c4b97f307dc. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T06:53:57Z), 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/QZW9K2459947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x179595328db9d6d4fa925a1afbe12c1e4edc7f589ebfe82f567ff644b894ad85. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/QZNJW2583428.