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 0xb19ab833389ead381344db1d6b049fcddec93741e2cb70c3d918b1a639cde71e. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8d007765-db7a-4b39-978f-3c8a44de2831.json and https://artists.proofprofile.net/proofs/artist/8d007765-db7a-4b39-978f-3c8a44de2831.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 0xd18ae82b0572d729c3d198c4533009f4642a3846225c972d239fbbfe1f0c2ad2. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QM3DF2210036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa105b8e069fc7b252a9d86520380cab102d3d660752e9746c6e4e5eded725da6. 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/QMANG2214747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x607939bbc2838926442596e5f183f0ef75ebef4502ce817d525b49d7e5404eb0. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/US3DF2426805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1ead13a1fd015861d0fd7053571173153b236e47b52c2ee6f5e4e662ca197ed. 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/DGA052411548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7f93b246e2dd6e471169986e02d59b2ee7deb345ff052dc7a3c10d7c8262817. 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/US3DF2495379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f13ac0cdf36706d88536bf0fab20b676bd1e8056f930f1a8957475d715f2035. 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/DGA0R2427762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe29a6df758ad3663aeff0c3dc3740478c731c53cc9047559bf4b4ec853c99546. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:00:52Z), 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/USANG2494091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa034afa11cbec4577ac2e0ef19088cb6d131817ddef383465ca1c59978883047. Chain 2 (Bitcoin): anchored in block 958602 (2026-07-18T19:28:16Z), 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/USANG2475009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x160ae5417804bdb747599a43f215b4c1551c7fac21004da4639333e83eb34d2b. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/CH7812423755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2fa929d1a6e4914996e5a749c813ea2c1e5d8cd98c138dc1bdf486481a7a038. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/USANG2479200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31698156a3cb06ef200246e551a6d0ddd32c1ed7752e5896c37116b457836198. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/FR10S2563767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf982f8bb7707035448251b3fc66c71126cd95b250281a51a539d604f6566d45b. 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/US3DF2508978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7749a6388d98f36ba79e9f977789f67b8931046d20b1941f2ba253e38a1d0cf2. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/CH7812527249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56dc3155d8ccc0a76b72c334304b53a24cf894ee363ed211946a3ab195b0fefc. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/CH7812527251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xace386bd356d3bd32b88da15e2d540a96a5514d13369a954e1766797fc3e1c5a. 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/US3DF2522681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad533e1285b1ccc2839375edd34ccc6de3d033ae31a273105463b42608f45003. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/US3DF2539071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88b51e71d6b8261d52d9404900f5fbc9a516eeecf47902698988c9a34e28e483. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/US3DF2546890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x903c024e21c094db1bd140af1985c3adbffd95fcc85d2c8ddd3f6388d8948e19. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:27:00Z), 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/US3DF2539073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9084be45d9d8275e10b974dc7824cab70de11666664e95d83eef0d108a920095. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/US3DF2554135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ebd96809ee08808daa1336f580826f7a22e81fe4a67856cab5b684bcadaa3fc. 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/US3DF2573781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6302846bc321b72328d77d48dd7cb969981417d72c381a4c969c9a637d2dd63. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/US3DF2595745.