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 0xdb50a79dc314586ae5af9e8ec7ea2071f6067a15268448841707c0872532cfb5. 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/d10f49fa-1f9f-4a5d-8ee4-9a3b49bc9b32.json and https://artists.proofprofile.net/proofs/artist/d10f49fa-1f9f-4a5d-8ee4-9a3b49bc9b32.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 0xd4c5fe10bb342c23387728b20934b1269861f3b0686dc23f3ce952f84e691629. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/DELJ81501943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fc5fe9fdfe62fa785abf1b61531e57103776b90e1b06cc333a6c214592b88fa. 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/DELJ81501945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a138d4de544967fcf8890ce2c3b8dbb71dac5646d8db6c4ba8c4b0e64967acb. 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/DELJ81501948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d4e18713b53da11f8472ac1fce9f3deb781c21cc4ca88d0844dae49e6880a23. 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/DELJ81501949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c6a58c0ecd2d7e8977b1991eaa4cebc73973de30b3deee2bc68c41021cade02. 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/DEZC62250827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8180229530d8d2151de421f3af32f4d661b51df7c9286d77e09d1b374492744a. 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/DEZC62250830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x575edfcf5ca218521d7f8b0ea6041ef2224cdf3f0ec2013ea4e5a9e60b66cd1e. 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/DEZC62250832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ffe997b8c3f7584d715f7a5a928e513e86707438002a88eb554072a47619a87. 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/DEZC62250835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x938ac782351157facad4f3103461b15a288eddaea18e94ef851d46d7aa22b7f8. 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/DEZC62250836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x677615756f621ad918cfe79b6cd63b42dbdf755ee6f9574e896f40ad385c6d8e. 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/DEZC62250837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc195a2574ec21a81f494d45efc45f5a139f619c307ca36669cbb2675487d3d81. 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/DEZC62250839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99f42dab12f83fdb164d801cb36bae54ec456ac39d81dac943a11c03b6187dec. 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/DEZC62250842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x981dc5d9a85f76eb177a31c46959de83b154f76afc6db1f661e04f816a969aef. 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/DEZC62250844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x554ccca257e1e3f5841c30c4beec12944a11367661f4f56c9ddcff3183e495f4. 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/QZHNB2581405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb883f76c0930505f0a32e27e50413ef749c9dd5280a573ae0113d593610bf8d8. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/QZK6J2504555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6920a76acb52cff9b620a582ad10af44a416c631dfc3929df82d2ca756698fa8. 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/QZK6J2504563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3977c9472e7f9c9132bd381a13bd803c2fc1b9d50481f482a66db6a67f1eeb7. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QZWFK2526021.