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 0x5314d0c2d1a4f88df9bda3d2f31f6c2cdce7a587c1abfb6dacce7388576f7143. 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/bbc12929-e229-4243-b5a3-b6e70be331c1.json and https://artists.proofprofile.net/proofs/artist/bbc12929-e229-4243-b5a3-b6e70be331c1.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 0xc6902c73aa34993b69ba44b593987b10f8cb686f6f2982f4854b91b1a742d4c7. 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/QZES72188619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaea9baf4a4e35635260f434b55c6519c589909368fd3dfd62161528ea9e1979f. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:44:39Z), 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/QZES72188621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bdb9176463a3175eaa049d269a422a6504e61d68247cef014a317fcbdc6bb07. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-20T00:22:34Z), 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/QZES52143082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd99b3a454dab00982768540d815fa0826f0e282a2326e110ae44677d9d7fcd0c. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/ES71G2309696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5115f84a464da2c826dd9588d3a087bd44e9516fd76f0e18454f3073aa3009d9. 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/ES71G2312286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd11a2a2c1ccd95e8d906e3179a08042059680f8c78a59b310f9de55fb0112f43. 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/ES71G2312288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a3bdcc06268bb04c9dedecf24663703e649a4146c6f360499db7597cb60d4b9. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ES71G2312289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c3216301b8d70104aa665ad050dcf2ef127f3a394533b0a75d06705a2c0267c. 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/ES71G2236347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41e74cab8b03b81a44ee3040fdf664c07cb8cc3b52698bc8a6139ad22e252520. 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/ES71G2301664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d56793187a962212fcc93dad036b058700707868a9f617ba8569e67e3b75b92. 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/ES71G2312291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1dfc55920de2a7c9642c09e8b30dcddd97518f5f365ede37d8835efbeaabec9. 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/ES71G2312292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd99b3a454dab00982768540d815fa0826f0e282a2326e110ae44677d9d7fcd0c. 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/ES71G2309696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5115f84a464da2c826dd9588d3a087bd44e9516fd76f0e18454f3073aa3009d9. 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/ES71G2312286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd11a2a2c1ccd95e8d906e3179a08042059680f8c78a59b310f9de55fb0112f43. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-22T05:35:06Z), 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/ES71G2312288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a3bdcc06268bb04c9dedecf24663703e649a4146c6f360499db7597cb60d4b9. 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/ES71G2312289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c3216301b8d70104aa665ad050dcf2ef127f3a394533b0a75d06705a2c0267c. 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/ES71G2236347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61d325dc6c1a90c9dcab34a078f47fc456b398ec9af6aa84af3f866f0146d348. 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/ES71G2330322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41e74cab8b03b81a44ee3040fdf664c07cb8cc3b52698bc8a6139ad22e252520. 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/ES71G2301664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10aed0ace1e6b5f46882dfa929ae8cb777c13a3ab0bb5f8079d8b45b3b666f8f. 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/ES71G2330321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d56793187a962212fcc93dad036b058700707868a9f617ba8569e67e3b75b92. 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/ES71G2312291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc968d955b91dd2c4a090bc4a78729dbf98a5bba19b445502ef2c58129122989a. 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/ES71G2330323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1dfc55920de2a7c9642c09e8b30dcddd97518f5f365ede37d8835efbeaabec9. 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/ES71G2312292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe13ce2716146310c7fa1a9caeed424b68f36f6294161665292ca2c38d707d36f. 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/ES71G2330324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd99b3a454dab00982768540d815fa0826f0e282a2326e110ae44677d9d7fcd0c. 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/ES71G2309696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc2729c577d528403a23873b514f8a07d7c2aa77ca66e953a6e94076ffa6b736. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/ES71G2330326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x788587e9251ed1f4b5458af4e547aec0ec7dbd52ed4c8b9035a0f7a69c2e100c. 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/ES71G2330328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15f71a3199ec0e7b45170802ba0d365cde6174915fc37ff3fd1f9d18702eb80b. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:40:09Z), 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/ES71G2422812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe188731cb9aa76e6bc040fe016cd2ae6be16857f331e3a32f21ab9b5caa515e8. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/ES71G2428519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacd28f93aa57853e3a9399a7689d3c1304e68e61c324b6140903f1b487ba70e7. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:36:04Z), 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/ES71G2431538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36790176cabe494fc50f8fde67cc83e5686cb0036a167b6e30f792f4dacddab5. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ES71G2500066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2547471e2f7082afdf7a19f7fdd8888486f70a8367eadbc85e1b59f4132cf1f0. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/ES71G2500068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35de05842553d038b21e5eced3d8ec33ab731debd07572cdfc09ecaaf68206bc. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/ES71G2500067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa939471e0bba5a8da9228b226ac0d24b5977ca527d857af874ca2ef8bb1d6a95. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:00:37Z), 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/ES71G2500070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd25ef12f721b881c01f0f95ce636a1e80ce3ffd7e73ad5a9dd5b83c8fb87e57c. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/ES71G2500071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0349c1e9a571bfd45603fde9e25d86f3beee493db07a147a7b8b251f61489b26. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/ES71G2508621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25db18e25bf91616da573f3940e4ed0d0fb0343f07f1d1496d65424f169907a9. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/USANG2001937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d6bde11001dfae3abc51a9ddc139a113ecd8be33bb6557713f7d866f1191565. 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/PT2DY2400149.