1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x4af533a096f6249075903860fdd87413c681697c71088f86478c5886324c795b. 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/3f921715-35c7-4de5-92f9-7d1cbc428043.json and https://artists.proofprofile.net/proofs/artist/3f921715-35c7-4de5-92f9-7d1cbc428043.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 → block OTSBitcoinBlock must exist at that height 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 0xe4b492f839a5893200ffa97a58befcb2364f8f6e78abd46b5480a4d47386e873. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/GXD7G2272869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x640ce964cf5ae1739ab931a4ffc7ae5c88f0e184e2d4a9fb69cc409a8bc2ff2b. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/SGB502519647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90238bf313369769a8149d161188c0c339566416652b1c1847d3f85b7f0e743e. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/SGB502569298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x789ba1a591e859e99d6b7281fb5a2910395517ddf998d1c0b11e68d740d04d66. 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/GXBAV2577753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30536d004930c49bfb85e56044c620726dba040603aa8ae30143ae50026a3d93. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GXBAV2554500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92e743dec2a16ab7b5509d22d3c1c6a198bcaad0c93afffaa3f720b2a5b7f682. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GXBAV2557011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6673ed60ca3ddd5b676d8c00c83c2294aafbabe85ced927acddf003dd931d0d0. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GXD7V2547999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66a56b85ea3286f1a88a25940034c1fd31651b945a2cf688a6430943d476cdec. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GXD7V2561758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca7bb259b7dea9af4c889b00de99509ded521192e05b166fef3716c2eef72542. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GXD7V2581723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a2446e60cd9976e180d671b519f7a525d7b7008e8aa27ee4460e282f0aa8b41. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/US7VG2555635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb82e3ace4389a22a036c07e95e79381bcb626e64af596bcb82314454edb34477. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T04:36:59Z), 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/GXD7G2573745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85e42e0c8c907315427ee0d2171ebedc73dc2f95928c2848f9357c7f9963f08b. 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/GXD7G2590583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeba2aeaa8c17fffc4a4db4aa26a724030d7ba9f6114807143482bafc20b28a8c. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/GXD7G2582866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83db754febf9f078f5207087be3cc67efd24b5661dded51f058bdf8bcbcaa054. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/GXD7G2512889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe359f76629793a3ddbd641d2908f330a9c236e94ed3731f072a0652980db6672. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZMZ92572354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd09faa99035f09bb54918f95740f39d586bbeee8999e2f9a97a8c379d376070. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/AEA3A2102965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf55ba034d0e2d018c8ed02cec05f461537b4fd09cf48e5bf7a3252e5102bba55. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/GXBAV2139896.