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 0xaadfd75f88f0bf000c002fa54c2b383146a2a82b1083d9843ac75f36d0ed26c4. 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/77842bd1-c541-4c41-a93a-76bd9d28de5b.json and https://artists.proofprofile.net/proofs/artist/77842bd1-c541-4c41-a93a-76bd9d28de5b.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 0xbce1e5bc6b2a149999f6298b9b7ae09af333bfd07208303c0b30f5557514b023. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:02:26Z), 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/FR10S1672017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3303233f336b1cc265e963fa5532b42bdce2aae87b9c72d204fbe0a43cf79c7f. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/FR10S1671999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6e22c770c7c42d3ebee938aaaf8f4e6680e9dbd4cef7ac15b2274377a57c063. Chain 2 (Bitcoin): anchored in block 958920 (2026-07-20T18:14:22Z), 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/FR10S1672002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8746c6a44fedf6c02f62bbf92a4eeaca7a6abb2806f75015d4b6e48b4042e27. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/FR10S1671991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5afbb07d9ef57b94aa3c035bbe022cf72e39c9780300040239ee6d03f4e42a5. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/FR10S1671993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86e402b1a096df29db875e06c3c448aafc014d260c25963bc07b9edb789701b9. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/FR10S1672311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a3d4ba9b7a530cea6ab4c66a20a0025ada77a08f0bd306e2224ac2a4f8fc810. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-02T22:22:35Z), 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/FR10S1672312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x451dcb8e585d2189f1b4b9dcdfc4da5cf50801fffab3995e66a7c0c9d154d0b6. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/FR10S1672314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc153c9841257e18311c2f5af7352c4c1638a8fcd8221000fb4b15124d49fe3d6. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/FR10S1672317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a3a112fc285086754df06bba12535e22f8f45dd805adf5a3a38ec6971daf11a. 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/FR10S1672318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c18d58d61a88ffdabc422cffedc79307e806bfe41737cc5250c8b9d366048ba. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T20:13:58Z), 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/QM42K1943137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ed6a17e246dbea67fbae1e61d87d484fd762378968182871b57781e6c3d4d98. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QM42K1971342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50625bb4355d673cb34048c5f248f55b07488c3cf0313219d700b5be2dfac465. 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/QM42K1976351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7b35e25fbb8ae0d45e8d9a8a15bf09a50dcdf232757df1d625df6f1d840cd20. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T13:55:17Z), 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/FRS182141745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2082321f8fe4c2c5c8f79670eb78db27a68ff817e45b017c34f85f04cb17f59d. 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/FRS182141747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3feafef43c272f23ff3eea20793d36999fac7b5952bc8b7a7dab0e0b682e989a. Chain 2 (Bitcoin): anchored in block 958590 (2026-07-18T17:28:56Z), 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/FRS182141749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd85e2f6d63691f29a23e66f2a926a58abed112df8f593b30c845cf5fbd36003. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/QM42K1800763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0fcd5866c85cf1674e673f28b22750051f3d855334da09591b2b1b76bc375cc. 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/DGA072277661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc13931b3126bd41ab69c1f46757fd6c34f64919895f0e91e1541b1da47f4162a. 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/DGA072277662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cad5b987e1fff5a751e9428f452a2f84a6ec1647200f3bdc99820c9aded3905. 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/DGA072277663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe1a63f85a1759274d3d1e8c21191216de0d24dba549f8af389efe171b261d1f. 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/DGA072277664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x561eb917a5b9f45d8dea3491cf2134b1e71cdc9f8c4f250d103e0ca24e76e953. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/DGA072277665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27350e84f0ea1f1428285f374c2ad65f629f9a8bdbfbeb8d0ee146693f837918. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T15:13:24Z), 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/DEUD42560713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb402d262b409d40a535e6922b79759fc9d40c6635f4a88467cbebddf86826fb. 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/TCAFW2190209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d64f1d10141e55a3482a458fb9fc8f307dc4725396bb7b1345350586dabd5aa. 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/DETO41520874.