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 0xc74ae0f2f43004f250a552493c8865d5b03464f7f3df2caf557a42cbdeaa39cc. 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/98d16ba8-23c6-4780-b7a2-6244b0295d79.json and https://artists.proofprofile.net/proofs/artist/98d16ba8-23c6-4780-b7a2-6244b0295d79.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 0xdb32c8eddd5afbc08a919c54c84e48c34e2c05d26b59b9ef8096a4e7c185a7b7. 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/FRIDO2416903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf56253087af4e22a3b635c67975a92cbb65fead9e9ea227cccb3daa22f5de3f6. 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/FRIDO2415208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa35e28075b65269c728ea1ef19e3d7cc3055249c94ac0e7d1490026173cfa0d2. 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/QMANG2302434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x973b91dafaad533c3739e38401cec7d75d611b5994e8ba15fb54ff6ef22a8cd0. 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/USANG2391584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d42d188bb74dc7422a4baa364373e1c2011d2095fd041db9c4aae5128ba8868. 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/USANG2227704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5376c5f1ea0e27e44cebc1b3f88bb9f5e120c20febf3591f343963b90310d23. 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/QM3DF2254223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb07db474cfa1859e85c46ba04bf4f778673ff5a5fc2dbb2e22a8aef4bcc174a1. Chain 2 (Bitcoin): anchored in block 957067 (2026-07-07T16:54:37Z), 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/USANG2257698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7afa691f1c3d2cda8bf1ce37be5c081fa5bd2a93a06dd54c9992e52f8d93a90f. 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/QM3DF2211946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1c85fe5f99a48d71a32d748f7ee80af39e2ce7745ef04718aa55a8dfb7a2cfe. 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/QM3DF2254249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4181706c7da24a4190d549042e154fbdb3c7c207460cbbd5a740ebcd54a438c9. 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/QM3DF2219438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe59eb761b16deddcc08057830ef276afab9568a4762cec9c02eb8322b93c3e28. 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/QZES82221500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91f335d8066f57723e7615bdb6796df3f15def2c388f1243daa0613a1fd32d08. 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/US3DF2509323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf56253087af4e22a3b635c67975a92cbb65fead9e9ea227cccb3daa22f5de3f6. 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/FRIDO2415208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c3d7893dba745d5a1c414b67154c7cb6d52acf59975081ead5038b00a068d29. 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/USANG2462875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a383d3b3c78abb0a7bcf216c7b5f371ce2e8802bd9847ea16adda751744547e. 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/DGA092439166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdad0bf4feb050d776a9db5bc4f9c6664b408820ac6b077b848d8f826cc788b82. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:46:35Z), 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/DGA092439165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78c9801c69a908729bfccae763c5be6b7e7a63d0f713da410d57710db77180a3. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T19:51:34Z), 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/DGA092439167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x681b790089b1e7671781d6651ab6f462dcaecccaeb5c900bc2f43fb00c487750. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/DGA092439168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70e94841ae0cd94a764b58504620329be5e8c6b8861d12e14370336b3d67f136. 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/US3DF2480830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd331914bc586d12d4f2a957946a11c190ebc0a5aafee395cd6ea4e79d4b007a. 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/DGA062479795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x107c687ed8add9d33ef9c860a8011176c655be275f16b31fbc893d7aeef9c6f9. 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/US3DF2490507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84ac055b46ed0af42ad1782969c332e8e5a5c3e58efcc6c7745a42d0dc8f20a9. 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/US3DF2460583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x363b9674e9dd90680263cff02dad625c5c0f6c0e77426bf3da1ebfc97af5e827. 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/DEH742415389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x493d36a8a5301efc56a5f72988aee071643abb380f18e390eb68715b2ee00415. 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/FRIDO2411042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8c7c49e0556dfd4dbe9995bd1cd48aba614d5a931cadcc3453585b831cc9887. 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/US3DF2423432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22ce307ce11de2aded77072642381ac8dea1f35d9d4a927294f766a622e36b47. 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/FRIDO2313787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7afa691f1c3d2cda8bf1ce37be5c081fa5bd2a93a06dd54c9992e52f8d93a90f. 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/QM3DF2211946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b571aa5be10dfd5714edd819dd71be4b31682f4693a3235f46f4efc8aad28f4. 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/USANG2279165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d42d188bb74dc7422a4baa364373e1c2011d2095fd041db9c4aae5128ba8868. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/USANG2227704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1bb8041076a04a9d162680683d977c1213d9510518d456a52c3e1c033829eeb. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/DGA052221592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf990067794275a630cce1519c4a39234738d7b772a5ad710a9aeacdef6576f8d. 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/DGA052221593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd87bb8a4f25c16bad06f7aca31ac3498c93fe93d3b7fb4864553fa62353b70df. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/DGA052221594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda0c494d73bffe21b4aaf73c27f25ef52c2740c580d8b90d769c5c1ecdaadf86. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DGA052221595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65fc5d3015335b2f61273f93767e14aa82f7bb26a245a62e04dd51cbe4128c61. 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/DGA052205167.