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 0x713663c54d760538833106c87efac7482839b65a07478b7653d9734b235b99f3. 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/f26dbd52-d7b9-492c-8925-b27a6bfd62f8.json and https://artists.proofprofile.net/proofs/artist/f26dbd52-d7b9-492c-8925-b27a6bfd62f8.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 0x763612714c3fb598de773bd1d80464102881cf26494d7811e59c2230e344d6f9. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/QZHN92013496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb512b501d0dae572efcdbcb219e4e18dbafe3cc1e1ad077f783a0cdc49d21592. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QZHN92013497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd53d7999bfe95a55119de928fbe93aabe32e626d8350faf07b10565e4a72899. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/QZHN92013498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x763612714c3fb598de773bd1d80464102881cf26494d7811e59c2230e344d6f9. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T15:03:21Z), 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/QZHN92013496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e9207a0e61135779121fc68224c3184c52768d1b993922a76e7ecd6b598b9f9. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/QZK6Q2054805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6da5c5c56f08ac505d6c8765a3560187315ce95838bd347f2f10c2631c3e5774. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:22:39Z), 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/QZK6K2061064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe554584702742e451aca4c1396260273eb1e97e59587139e415d94ed40e2de71. 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/QZHN92013494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bacf15608d06c6ab3acb58649b283fe7b119827c6d7d13d6ddcaf4f048fd8ab. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T08:56:54Z), 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/QZHN42124097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58cef6338f6d7675ddd4e97c7c273a77be4a1d25193c06c4ff85a8aa37b35b9e. 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/QZHN42124098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d8e84dd35d6de50d5aa6af19c40eae3eb472746bca13b4a4c31424a89711cb5. 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/QZHN42124099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe251f4fb9739777653f5f995a75a00599c83f0666b6b8ff27623b0d5766205f7. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T10:23:13Z), 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/QZHN42124100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x625a1366a7856176d42638c62f3463b4e1205b7d814eb4b9e5d0e1469607d1e4. 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/QZHN42124101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c065c18e5723e5d562edbf945ae11080f4712c2ce0b3b10b46083449fdcf277. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZHN42124102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d3b2edfb762f0771f00c57d55464f620c437d0426164798bf694214e4222b92. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T06:51:02Z), 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/QZHN42124104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec56a55620920a2eba489602750ee01f49765fa2b907de7cc6b28b3db6b84d95. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T06:39:43Z), 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/QZHN42124106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b3006b06188ce5e861b789fc56e8003f4f084b16f4ae67fb0ac1f004a1bf563. 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/QZHN42124108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a221b3edeb70439f8ff5809a005b16209edb195b8bb165a7f95dfe4445df742. Chain 2 (Bitcoin): anchored in block 958585 (2026-07-18T17:05:16Z), 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/QZHN42124113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bacf15608d06c6ab3acb58649b283fe7b119827c6d7d13d6ddcaf4f048fd8ab. 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/QZHN42124097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58cef6338f6d7675ddd4e97c7c273a77be4a1d25193c06c4ff85a8aa37b35b9e. 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/QZHN42124098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d8e84dd35d6de50d5aa6af19c40eae3eb472746bca13b4a4c31424a89711cb5. 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/QZHN42124099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe251f4fb9739777653f5f995a75a00599c83f0666b6b8ff27623b0d5766205f7. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T09:01:15Z), 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/QZHN42124100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x625a1366a7856176d42638c62f3463b4e1205b7d814eb4b9e5d0e1469607d1e4. 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/QZHN42124101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c065c18e5723e5d562edbf945ae11080f4712c2ce0b3b10b46083449fdcf277. 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/QZHN42124102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d3b2edfb762f0771f00c57d55464f620c437d0426164798bf694214e4222b92. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/QZHN42124104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec56a55620920a2eba489602750ee01f49765fa2b907de7cc6b28b3db6b84d95. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T19:59:21Z), 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/QZHN42124106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b3006b06188ce5e861b789fc56e8003f4f084b16f4ae67fb0ac1f004a1bf563. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZHN42124108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52d3c90dcf32d4149bbfa37e9f09b015ce0912f48f7ec82a81d2bc73a56f2582. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T08:10:30Z), 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/QZHN42124109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae9811ff3394667a97bceddbb21492c35e470fa1266d57de062f854145540195. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/QZHN42124110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a221b3edeb70439f8ff5809a005b16209edb195b8bb165a7f95dfe4445df742. 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/QZHN42124113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca5f6ff24589fb48c62951cfbea40a9c6b1132af79ab3a4540e46126be180024. 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/QZHN42124114.