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 0x6f222c332786aad241029087a64257e6de25f82c3bf95a29cb01a75d09fa8d72. 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/7ff56ce1-27de-4e3d-9ea0-b57cae9204f1.json and https://artists.proofprofile.net/proofs/artist/7ff56ce1-27de-4e3d-9ea0-b57cae9204f1.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 0x48d5999dd1faf946af7be3a909e6e1d682ead04d0c5b5d34887d3f894362cffd. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QMFME2590486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8ebf1641bfde2e17167a984f09479674b6ba91e902a495205e1d25dfe7da6cb. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QMFME2590556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6435cd2c6d132a73bd32d1c7be5722123a5d1e5c2a606ffd9913ef7b995ff9e. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/QMFME2590482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa3e62ffedca08487b34e159ca5d72ad2921053323a5f3b78673786e2a016742. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QMFME2590609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dc0c6bbc4fd2259ed771f7ec4d494a34f678a7f5dc006d5043d82280dc4b4be. 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/QMFME2590589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2379237256859001e2343fec282252aaee286849ffa9ce550c6d2e895d7309a8. 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/QMFME2594300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x742a751eb4f8ead1eb5853d38c8479b1e3d04bc1ad48b3a60a0a068e2bf6d5bd. 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/QMFME2590579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb44026c13b59eb89726cf32b936d1722628873feba0ac63807f86a7ea4a55f46. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QMFME2595054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1997d4ed9a6451edb7c002e163d94e96eec830e46e8f6b92e18ba940c5d87823. 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/QMFME2594983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36669e44f767bdea2cf4f0e7e7a48b4e8d48a3b8be9410f01bd40f865e4b7c7a. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QMFME2590613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24763551da4f4011c31cc36621e8a08ad2fe6fa4a11f409db2a97ae0a21c8fa8. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QMFME2595001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37fd2f95764d124b616c915db8b538537dec4e916c35bb4b21a2a0a087142451. 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/QMFME2595006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe20b45421246c595179be3a49463941ac29c75b5711d23d5be0c6e9a95d56b41. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QMFME2590616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf2883a3694a5a45a3199f8a72d69a4d2445038b062617d9969b169160e7c3db. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QMFME2595024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d2d0c610587e5b8d04b085522424fbbc19ac28d357fae41484cde3010394d73. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QMFME2595041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16c1ed874452122b26377034cd95382af33c3133cc261592414867ae55a416c6. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QMFME2595043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b1ebc122ef2c80a10dc6da167320c58520927e4f898f389976eed89832a87d0. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QMFME2596805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd8eff1a16857bc51090e30502120da9828e2a519fecd3e5536dd9759706960a. 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/QMFMF2503135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6cb9027f26695c2d7349c7d3a5b43ee51375031144aad444eb0e2dd863a9b40. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QMFMF2503226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf87a960585254480d4ed8b06e264f1e36ca6de30ae3fff6570be5fdde3caaae0. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QMFMF2503449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce5dc4ea2e79ba3ef467aafe5c7a55ac967799566d80a465c7532272ea9fc5b5. 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/QMFMF2503225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ad81f51d5a2390f96308ce4424f673cd7aac50ee6dde97fd31b100840e3be80. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QMFMF2503003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a3ea8f17d35856f67a8ff59efd5eedaed25b54db1693ae153ee6b5445a23d8a. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QMFMF2503131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb189953f59771674f8ec21636e2a12cb0a576233bb1c7a37a2d3ea7d2a986f29. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/QMFMF2503100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08fbe478cfe0f8bc31eb49539cc0660008f8595686e96a8028a8fd3254f3ecc6. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QMFMF2503188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50f335acf4c527ea4cb8493cc657ba485ccccb4c62030c731e18bf22b0bc6842. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QMFMF2503121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3a6c9558276314354e30399bc595db3475defe6b5ec51a60a6ae4aefe9b5d1c. 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/QMFMF2503109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3358d866df53291b44ae36cefffd0d315f244215a23191b9a4214e8cde3e2cb7. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QMFMF2503104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3790be388e0f85e96a514fd0e7b8a8adb3ea3a858ef15c7f71463f68dd0b9e36. 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/QMFMF2503139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fb8bb309b293be3e1220f7bf58a3a9aefe4b921646a8fc69842554a37c3843f. 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/QMFMF2503186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fa9ab5de9b247d30eadaca72df1a8e35db7d833b7c52182acaa44e8c2989d04. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QMFMF2503184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd523517df299474a0b0cc671bbfd9894317167d69b085134b8d5d67c9b31120c. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QMFMF2503002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe87f81c771c1e8854d838c9bdba84607c28a433f23dfc151c4d714838792c637. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QMFMF2503200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb538a5452a2dd379eea3700b1c6e714d8f3699a2a938bcbbea36834d7614566. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QMFMF2503439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8192a88016a3823363f6d0d198b1a4116f57efc4a0765a0ad6ca8ac75956fafd. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QMFMF2503206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f472feefe06f91840d144ab8756d796a499de359d1936279e09ea7f5eb099d7. 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/QMFMF2503433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x183b640667a1d5f61e9ab25ee1ad3983c97cd48f714edd74c6b6efd82f86227f. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QMFMF2503205.