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 0x6afc8c36804a7a7904c23618a792b08e02bd00946af25603ec2f9e3050e296be. 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/f5e3bdb4-00cf-4043-b02a-a50b90503ef2.json and https://artists.proofprofile.net/proofs/artist/f5e3bdb4-00cf-4043-b02a-a50b90503ef2.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 0x88c8aced01180dc4e786afeecf940dfa7b9155919045f3a8a1bcecb000ea7e77. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/AEA2L2104569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57c4a2a20ea2508d90c294f857949e994be131f753dd7ee353e93978f39d1b8f. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/AEA2L2104559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bee150705bb6a96ffe6e385b408123bfaf41cc7adfd0220249b1343ee4610b5. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T10:46:08Z), 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/AEA2L2104561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee297ac9aa0311e24f742bc2fdc7a115cb0504cc1c2d2ac1d91b6cca9bdb6150. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/AEA2L2104562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x944975f10633d055ece2ec44412d28574e6759d1ca8e70447d3442d64a261a4d. 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/AEA2L2104563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0f2bbadf9d886102015741972ad37afad31b8fecf34a4fa834ef8011717a15e. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/AEA2L2104564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa43904c513d90fd89d1d94995394446f3587ad604894ca22c68ee56c2d16a1cd. 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/AEA2L2107631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02a7c5bcf9def67e5ef87fdb520bae89d7d03b2cc405900a746a29d2561c0545. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:30:47Z), 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/AEA2L2117285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34c4ff58ebd7f00276a0b7fb47e5b913a652015f404f3047451582b0e092b0ff. 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/AEA2L2120387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf69ef3e2402ebeaa5cd405c262b3316e8244397df9e3d0ffd943abd7d2cb9063. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/AEA2L2120388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9131b2ccabd7d705b2fcbc09b4050679a52b16ea888c6a454a30ad2f7d41572e. 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/AEA2L2118808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa55d6204952d75cb3500e27837049e2e5be7be1f1bcee7d509a9219e580c8f84. Chain 2 (Bitcoin): anchored in block 958369 (2026-07-17T08:00:43Z), 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/AEA2L2124818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb199c214a333fefb11c513e763be7266b24e54c99f8e69b7be13c2d87421963f. 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/AEA2L2126802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ff429fd66681fa738b29f20d9128f962d0a6027e35fce3c00060aaa38ca1b69. Chain 2 (Bitcoin): anchored in block 959073 (2026-07-21T23:25:37Z), 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/AEA2L2126803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb43b33cc11f25036d287399e53adf50060875c8a503aabdc15d67be8fce31e89. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/AEA2L2126804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91bf655795dc0cb2f3d5a0cd5b6ade98d9344d44cd99af334daa84abb4e539cd. 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/AEA2L2126805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc788fc67f0d874bac60cf42ac9223bd60798f9bd0885af22c9a8083b16b53091. 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/AEA2L2126806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f0feebec6e151c44addd8e5b09f32acfa4cb83d95f6dd1a6a4610e61c317a28. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:36:14Z), 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/AEA2L2126807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x647b09b10f59cb565db74776b078cb3b8900bd0d5c491e55a9027c975cce2d13. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:00:10Z), 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/AEA2L2126808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x628f230deb2d8426ec15a24955fc33360c70c78bf9553ca8a3d814851dbba042. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/AEA2L2126809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2837664eb569991fb172addc49b7b537bf9cc2a3817b61ad8a42b709124b55b6. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T15:21:26Z), 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/AEA2L2126810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeb47716607885af462836deb26d48b236ee3e5c7dd4523c0e8dfd5ea627a871. 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/AEA2L2126811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec3f04efb1af57b3dbd06a5d35a4a06dac81b51b7b8352ef944df68257e45ef6. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:51:27Z), 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/AEA2L2126812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d9b345c4be9f483ebcc9dda509d3b7bab2817190735d4a5bd64a03cb950d698. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/AEA2L2126814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x792efa6510eb3813e2f8f2f7e2bc4fc0f4a25cf9cb438ba35cccccf9fe15203b. 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/AEA2L2126815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08fe98e6faebbcf35098042d5fd789b398bab475c89046787e2e035cfa3cc686. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/AEA2L2151670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x265b943554a8f32040be0b2bd2655fc5a3717101a62ebcf5fabc754857270dde. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/AEA2L2165371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dca0b824240931b026fa2497234f365f3967a7d85c575686f5dcdfb2dd3d741. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/AEA2L2165372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10b325000ceb6e1169328e217e7cc15fcdec3a33052e08cc22ae3caa5c26e96a. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T10:25:52Z), 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/AEA2L2180561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xece2d555435a55b9e923e52027a51aec5791a5bf1804085baae49eddc7546bfa. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/AEA2L2517791.