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 0x54513e7ca64a979c6dfde0abe1010d469a931b1357f7d3272ebcc92f5fd67048. Chain 2 (Bitcoin): anchored in block 953777 (2026-06-15T11:52:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cc19167f-0046-428b-8ca9-6fbe8dcec0d6.json and https://artists.proofprofile.net/proofs/artist/cc19167f-0046-428b-8ca9-6fbe8dcec0d6.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 0x1ca42db1bd2d60920617e486f5caec4e0d9a1bac148a71ca95a0ccf19e7db843. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZZ662428106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4356b9ee6fcb6e54fd14e2dd0b66cf5893edb6d0fadd3efcf03c7ac94a14369. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZZ662428107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0578844f5b1b5a174de91abad35297ed9b03de850970c51629bd136970645585. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZZ662413717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x517c17e5dbf2ac260f2b12e721a714f2169036af47dbd4daa0a422cba44b25ae. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZZ662428110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x428f21f373a91c24bbd512c5c4808d19c562061c07cd551891078c34293f587e. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZZ662407162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc29ca8e5654882154899c03045c56c74ad73ad4a70828ea03acdea4e6e78f20. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZWDW2422632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59f72a42bca044d6e9537d6d12adaba4f7be0a7574f3835e7fcc89e6bedb1e53. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZYFZ2474438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x837a02a52d7e72a25e5427b342b1db3130caff85e0c5b685b0634f402584cc70. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZZ662430524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x428f21f373a91c24bbd512c5c4808d19c562061c07cd551891078c34293f587e. 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/QZZ662407162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x415a2d88021d59417b26a6416c05a4b37708d77b712b808faede14417161b698. 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/QZZ662356445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5755a3b9aa4096f53993ebee241b14aafd9e71452c206afa49ffd99d645f4f70. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZWDW2381369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5755a3b9aa4096f53993ebee241b14aafd9e71452c206afa49ffd99d645f4f70. 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/QZWDW2381369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4d2080cf97c6cf062f513af2e8f82065de7fa62857dcfe31c1f0193003804a9. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZWDW2381370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa078db93f9d1254193399cf9cd7bda831c05e2a446a8b58888e778f6857892b1. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZN882306142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49704cf9661cd05d6b6b4c29229bd951f1c2dec88a28788aed5661353a8662b6. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/CZUM72200655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9837dfa7e8cbce7ad6014643fe3ec9a669cade0894581d308eff91c0a39fff4. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZN882240450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d24ca5ef1844bd3d26264f145583e4ec7abed1600aedb2e864ceda286086879. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZN882240454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6184883140b4a168b4b061034a2edf4ad0dc4f364a24a76cfcc242c666c69e01. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZN882220820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27bf72fcc48647229f79d0ecbca08135c37400113f684229fcf14588385ce806. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZN882203238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9a5df48bc962dd66cc93402ce33dcb21883961208c7533729ae6a8aec75b789. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZN882202320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8239beb73e7663ea1638f9528a3e56dd25bf03a417fce66375d803587f2f00f. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZN882172259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28ef6ee3a2284e04d3125edf5d1a1315fa0e0a85f3db1a7177bf28a516b81dd1. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZN882229771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x066744784f66a2a28d05ff033aebd92b03acef6e4278363dae5572f2797aa51a. 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/QZN882229772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6a5253d4aad2c2cbb8c3a0a4441784238ddbea5e797f147e54a37f56671ee6f. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZN882229773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5bec6b5b3c7c2786ea4512994700ec90c2ade3ab4135288145a62d63e6668b3. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZN882229774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd63ea12e09298f1318cfb23546b4cc936358bc0b10ba1f0695ecd6d842f21b04. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZN882229775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44fcb9d9b9ff4b7d68b95764680fcc690f2f757ea5e672aeffb2efb2dfe0b695. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZN882229776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e8bfb99d516f1a638694154d5f02c73bd0dfbd8423024edd79db495e550dfad. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZN882229777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x441da6e99c98f4eb0ffe261241afbe20e0afe44e605ee58acb46167485ba3260. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZN882229778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94150badd7c3340d932469f938d2d5ffbbc2b625b70fb8017a3b02d678593c6d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZYFZ2363165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d658b9cb39705a75b2c8615d2b7e437b2c5a8084a736a3d2812ff63755b3220. 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/QZWDW2385630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c77b6ba9fd56080ffaafb721c59d9ae1e0088124dc5ebf207aa85f8f19ba2be. 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/QZYFZ2363166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1695a8728403232f24c305321bfef9a4c62aac7fe8a302e5d2b14decc30de003. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZYFZ2363172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x906622a9df6dc4af73fef6555f953be30d0652077be7aeb2cbcae48528d8f769. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/CZUM72201036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e0c1b70b41e14ccd309c6c31d1f6decafccc99e5bc85f5b6235204ef6eb5cd4. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/CZUM72300123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aea6c56e799d6df7951c39d49f290f1c40de3a1a1d0bb1d9bb6b3b61b73e627. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/CZUM72201175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec2e65a8809be58cb7b8fbcb9f2655cada6706250d4aa9dff42d4de08046f389. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZWDW2401169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x231cb501c1d0b6a2f8267bb1a6d468ef7177fc75974a04898c27e5e8f68cebd1. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/CZUM72300163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf7368302fbd9df8e373ff5e06c4fc53828858c4744a5af4e48bfe1ee06fb548. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CZUM72300547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3657ec34c60a696a40f4f6cbb8198ac49fc03c9a0c606b98bcdb2fec2d87bd6. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZN882241564.