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 0x1e027da2a16f8df15d6ec24540090fcf339d37b6bb7c6e662e22ed68833524a8. 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/31b46189-050f-47d2-83ad-751869c3690a.json and https://artists.proofprofile.net/proofs/artist/31b46189-050f-47d2-83ad-751869c3690a.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 0xbdefc9452c911f420de2f217ae3b2b2ba2ddbac4e5bc04b8f882f5c669549a9d. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZFZ21944595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7160c5cfeb89117cb96452848599185d3566db50ee7c5607a2d0c08d36bf675. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:17:26Z), 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/QZFZ21944597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x023cd268b964cbbd125dbf849450de604e6ff0678f6246d7dbfbe2d342df0913. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZFZ21944598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x134d5c28984a1e48e0445f033dad75fc350e0f9b4fc549608d5b6ec8bbb75f97. 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/QZDA72185786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0c7715738d57c1ac7deb1cc12fc097203cf4a178f57d511aac0446f145d148c. 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/QZHNB2277896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d2675ad5b979d7ce737a00dc65b67656f5fc64e30ee9383d8413896c4787db2. 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/QZHNB2277898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x880722add180d964d9cf8a3c94491338bd160b63904bc2ad1bf1c1c5c2af7ad0. 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/QZHNB2277899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a2563b5e8acba4f75a5d274eced6fda684b06582e252122edfa945326ac317a. 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/QZFZ62116735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6fdb6909f26e57bcf67f6ef55b507a5ff2ab3be3724f240c23f70eb844a28ef. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/QZHNB2277900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb16f320d8916f82f1246d6e8bd7c37881d3155da72b8ed95ba8511fc80b7ec5. 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/QZHNB2277901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x944d0c4f4575548a2084cc6f7ef99e287d742da9cef5d70de2d4204c53a4faa1. 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/QZHNB2277902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfa215041979fc56d05cfb44a0a56eab5153ebf8d9203b3b0ecd9748ac95efe4. 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/QZHNB2277903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafb69798e796bcf16230c87825de06a8c81c62bd9a0e1a2cde59544099567495. 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/QZHNB2277904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7012aa14a1f98471646a49f0a030ae719b326314bb769dbb0c4e77aac2d6fe88. 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/QZHNB2277905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a3420501c8714c08ee094221f4d4af020ae6e0176e79245cdcf31977bab4204. 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/QZHNB2277906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eb8f05b849cfd6edda94f29a54b7da3f81661cca6f2f5a691ab110643713cf3. 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/QZHNB2277907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc435b454d844e12bae0cf1bf1ff6e8720d528585e66fbd60a1b227d5ff23354. 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/QZHNB2277909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6512e20b234cf0fec7cbdf0a8e2bfa49fd914b5e4ead9b97c437e9ce2c5f4fe7. 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/QZNWZ2488884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x019039475a40feeef0f169d0d1010832763b4d38649a53a036c55fbf0ab0dfb6. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZZ7P2400361.