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 0xed8881daa2cb02f7545f0b4c11766eaa682233fc5e6209ced71cd849a980ddba. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3f2b595a-2664-4aea-b3f6-3a7712b8017e.json and https://artists.proofprofile.net/proofs/artist/3f2b595a-2664-4aea-b3f6-3a7712b8017e.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 0x6772842d54677ed6c419cc2a2b43bce5d51b3ce190e648d373ce3b9b938d5139. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T08:02:29Z), 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/TCAEE1943539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1962c6f55fdd0bf82c58679cac6e62e4589b9f87fac753476bad0e844a1fd082. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TCAEE1943546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x259a5d7e2d6867e9795b9ce7910a7f78c920ded8935a9ed1da8c4ee7202ab1b3. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/TCAEE1943549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x345eee0410957fe6e2d6754044d8d8720f3434ba3d74f38dd40d5b382bc736fe. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/TCAEE1943550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bc31550195320cccd762686ea7781d3c2b4022b16c1e746dcab8385899f2007. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T05:04:06Z), 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/TCAEE1943441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3ceeb25b87af26401bf5e6dcada70a0f3113e18142ef37ea181b29af058ba56. 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/TCAEE1943444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6e190e9370e92a8525569a3189a13507d562792bd2c00f389afaacafe520792. 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/TCAEF1937246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe424495af7b54afab44d25699cd3cb7c96395df291cd2f3985807e011064d06e. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/TCAEF1937253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1c1a2314e06a9cd5a906c568992ba1731eae15160823cd5a5ccef8b41d6c9ef. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/TCAEF1937261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x684f525e38edc4e5a13fd012afc7fd88688ffb09b2aea4b0a7bfabacdcdd1273. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/TCAEF1937262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5735c25aab3bf0bd2e91f64faa45717f7266133dce807936ef007fc16498668b. Chain 2 (Bitcoin): anchored in block 958682 (2026-07-19T06:17:12Z), 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/TCAEF1937266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcda323829bbcc66685ed5df03efc81e0a71fece78cf98c340efd7a39410224c4. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:36:12Z), 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/TCAEF1937269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe37a3d0795e0cd05f113815f8db5d1d111cfe584a13abe081f2bc0337b5b8149. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/TCAEF1937276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1a636e29591217449c1d84e9c54a492f03b43b2102146d223bb7d4b1c8f8a5b. Chain 2 (Bitcoin): anchored in block 957767 (2026-07-12T22:25:13Z), 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/TCAEF1937279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5556f94ecb7f0d395e4789cd3a153b0884a20219934eb5793fb1bbab53c8be95. 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/TCAEF1945913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a6ba6c714970859ae56dc55d5ba08f0f4e2af27ac1dd00cfe7cec01d6bbadf6. Chain 2 (Bitcoin): anchored in block 957761 (2026-07-12T21:55:15Z), 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/TCAEF1945915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdc58436c8914f62abacc39a6a38fa35aeaf4e3b7f598b397b6b026115f6bdc2. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/TCAEF1945917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6383d0988d43e378144be1a645028e33051dd4243016b4dba95bad459798b0cc. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/TCAET2038335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e075e23db6f65c0f5edfdb5c00023d686e0fe8219a3a55a9b00bd35b0d49868. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T07:08:04Z), 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/TCAET2038361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dea76bba0d79290f0d68dcf16a6b063cf0e5ce20d3fc35a73fd64ccc6737b2a. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/TCAET2038373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42f352c307592db58cb97a7994f5b3b81c810cd7d6f954185045784668ce0666. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/TCAET2038384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ea21063b8d8c6494b2069d9440c8b7771d89c68c474c610572956111f834748. 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/TCAET2038395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf64f10de070024f787dc6acac5451f2536fc1879e8e13a079a2f75fbc5b3c55c. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/TCAET2038396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88b74bafdb8b65df76c27c3e6393133ab4f210234039c156e3b2c64a9f766e1e. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/TCAET2038399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5419194a23b99d5e5ecd1b70d0e6d8073c47e6acc8d73372fec1cd5d167bdec6. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TCAET2042039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3d7ccbbdd397968d37c75262aedab9393c54bfb2f7e97d7f8c4dda724f2917a. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/TCAET2042083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d5429be083a550a0acc0302b195ec5ff3b40a452f521de5ba14477adb1b51ad. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:03:19Z), 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/TCAET2042090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa17ba93d0ba125397ace01558ce1a6226a1ea3611a374ac1b12688da8abd38a2. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/TCAET2042102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1a3aefd98163e93534b4bb7ea27f1c2e97ba6c0922dd82770714c1e458e3b54. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/TCAET2042107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa4bd64e2e131c9d9272c8110714e88ba54b8179c611b441e1665732cdacf8df. 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/TCAET2042127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e0982c2fb3fa6d90dc156e40f4c9cc127dbc575d660205f02bf3cb4fa3c61d5. 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/TCAET2042131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b0bb435b2ee93883128328ab94514283be1cf0cb0d64b5dffdca514c920585f. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T18:25:47Z), 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/TCAET2042145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5fa6901674bcb524ccac3250ffd19880af63d19d4cf8a20615c496345727118. 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/TCAET2042156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d7fb4d4cf98fd011c65a445c0f645e00f03327f3150c1dd3e4d19315f762175. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/TCAET2042162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd83302bb9ec0290fb62ccae5ef95f16175321dd403c1939dbf92bfc19654ae7a. 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/TCAGT2344275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd5fabbeadfea236c668b514dcac4448a7daafb40ee0e2bb56979594952df186. 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/TCAHJ2373320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde547cc41f7f9be994935bedd49ecdc47b4c65a3a975c1e2e5e661cdb99e4de9. 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/TCAHO2353059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6715e4fcb14efabfc4dac35328c9971ef42d3cbee6d53094036bd923afe080d9. Chain 2 (Bitcoin): anchored in block 958611 (2026-07-18T21:24:44Z), 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/TCAJE2428319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa7765980aedadd942d11cb1a0fce5a3e93136eb821e00b0423776ebdfb2ecc3. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/TCAJD2477162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aeeae22b528f07e728e4c1505e7d743fccc3017df627e87f3dea18f1118652a. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:12:43Z), 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/TCAJH2513483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9000d9ebd02b9c8769f8cf7db917807a88dbc9284f0f825424d2aae4bc147eb. 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/TCAJT2550324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x871947efa46faa4297baa1de1a1f13ea5303dacd801b6628a4771b152ea12a53. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/TCAJZ2563263.