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 0x9bfaeda8fe16f966c0a6fc04429ca5da9f6f08b6fb5675771c61c9ec7bd112c2. 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/9b93d088-4e88-496b-a064-bb4f2c9711d9.json and https://artists.proofprofile.net/proofs/artist/9b93d088-4e88-496b-a064-bb4f2c9711d9.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 0x8e7618e36a60171517c0183f040a0ae2fefbaa04929773c0572fbb7eed0ec65e. 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/FRPI62300510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64bf5e87a82ecd288f656cc6a63f601e8aa50ce42cde26d9ce2c9a9a70c79c05. 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/FRPI62300530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49f89718b0b0a29c155a7c9f3d74ae5aa262db4021bfb4e67c215c47bdcc8dba. 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/FRPI62300550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe355d09dd957a2130de2e812c223df1d9f9064c23b75a0aaddbf049564de528c. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FRPI62300570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x694d3d80116f7e97db8be269da524e40cfc2002d65dc622d10568b1c8d8a68b1. 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/FRPI62300600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c28f1d761e594fa990b88fc0120f3a8470a27b5bf088a060e1ca3a8dfc3f42d. 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/FRPI62300610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcadfac7765d06423315b3425276e237c4dd86fe04e5a1bd3ce2095d0c8895ab7. 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/FRPI62200020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2238c315d5c78d133fb7e4b4d93b66c065c0808b4fe9aaf64e28a2d037ebb3b0. 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/FRPI62200030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a269f948bf53861039e22b029201a13cbb4613970f453c67929f1fabb88977c. 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/FRPI62200040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4dcde87d10546fc535459228e78cf5239ebb86b977a85f67737598dd5850a1a. 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/FRPI62200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b38a914ca16ceb3ccca4150b894222eba5e51282b960fa84278ff02c2c66646. 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/FRPI62200050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87bf2add1e97292ca393eedc033b96195a13df616abc89e6dac9de51e06495ed. 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/FRPI62200060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab59eab620035e6392a5b9cfc33638bb21a5ce5da8c5891bcf4432e72e48b5a9. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-21T17:09:37Z), 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/FRPI62200070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dd85e3425cc299576c0b054462828a7269123c528acd1db2c4d89d071a752b1. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FRPI62200080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30694cfc10337dbb66130ed15c12d04fdf4cec5d1f7899fa8397dc7acdd8c9b2. 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/FRPI62200090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x790c6a1a0c06ef415374b8ee2e5a9b3c22b2d4051d52219ae7a426c1b3246d84. 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/FRPI62200110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14dd5da4805a5fa37b46925caf10abab0745be724c5f57b1305769827c5ee061. 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/FRPI62200120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15435cb620725af2e5de0565e28c516c970c4f6121877efa99643da2f7cd2c0c. 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/FRPI62000210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x921a80f0c90d1fb6da46f894379098b237b242e44ba3dfc78ea03acc5fdbc9d4. 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/FRPI62000220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4f59a61cf7a2a102c18c9e2671e19d28dd8b05b20bb939cce76fb0f9a5bd30b. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FRPI62000160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53fbe5cd3d350a6b994c117461a88bc5737675b094a07dcf52f47a973abad4be. 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/FRPI62000230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe7f2ffef22e11eabd3a11b7ae0fd64a9a59a08641ca75fbe5c9c6da845ec576. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FRPI62000200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b2e0a3c64b604f2c16cade6704700abc0a9d88519e53ac643714a08d7336933. 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/FRPI62000240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd136f783851711c175ed4fe9b64692ea8de7b177a2afa2b17f3ac856ecc1cb6e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FRPI62000250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cfb003faceb6b67072297da34d670fc2a421baa5a83dd8fef5c2d61846f5df3. 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/FRPI62000290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9363cccfa6b37e6ed959c1fb825c8f982e5ec9c02c0d5d796003b9700449906. 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/FRPI62000260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa26fb48f34e63724da8bb002fb2bfacd7d4d6a840e8fa7ae148e9995b1cabc56. 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/FRPI62000040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c498e4dc61a12a9591a90df0bc6ed5babc75eb2f73dd88409f8d42c4ad5fc56. 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/FRPI61900080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa210e8da1505992ccadd976d78adeb80ebffb0fe62bd0f71465f277e2eced3a6. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FRPI62000090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd189b1cd2cec32b112273afe3b06e825af732ef644973dadd62a14c82386f980. 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/FRPI62000060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe355d09dd957a2130de2e812c223df1d9f9064c23b75a0aaddbf049564de528c. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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/FRPI62300570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a269f948bf53861039e22b029201a13cbb4613970f453c67929f1fabb88977c. 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/FRPI62200040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4dcde87d10546fc535459228e78cf5239ebb86b977a85f67737598dd5850a1a. 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/FRPI62200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fb9708dd22a7ade0e033b20a4c6fe7cca259bf5c3afc5429c02e324a10c25c8. 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/FR9W12128184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x921a80f0c90d1fb6da46f894379098b237b242e44ba3dfc78ea03acc5fdbc9d4. 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/FRPI62000220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53fbe5cd3d350a6b994c117461a88bc5737675b094a07dcf52f47a973abad4be. 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/FRPI62000230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd136f783851711c175ed4fe9b64692ea8de7b177a2afa2b17f3ac856ecc1cb6e. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/FRPI62000250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe7f2ffef22e11eabd3a11b7ae0fd64a9a59a08641ca75fbe5c9c6da845ec576. 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/FRPI62000200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4f59a61cf7a2a102c18c9e2671e19d28dd8b05b20bb939cce76fb0f9a5bd30b. 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/FRPI62000160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6437a6048204e05ba81581854b3b30d32e5d52c6d7317778dd39981ab6dc519. 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/FRPI62300130.