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 0xb01d64c9735882124665196ddacfbe982bf67aab5c227d8d43f1b29032ebe183. 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/aeaac9e2-51a1-4670-a4f1-0cba94b06b01.json and https://artists.proofprofile.net/proofs/artist/aeaac9e2-51a1-4670-a4f1-0cba94b06b01.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 0x6d6ff8240af7fc3c1fc2bc45b431512dcf501056f797a5bd801400910c5d086a. 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/QZTAX2265716.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x012d89be5446e24edb8d0e9e4a078501ebb18c5a62902c8e6da53ca846dbff09. 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/QZTAX2265717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x733deb71680a712b8f6e09b71e03ffa8e6ae8e9d908c14283960e228191a2836. 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/QZFZ62205572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8fd805cec1e424f80ae481730ef9451f7840627d289cdb924303388ee784a4c. 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/QZFZ62205573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcba79ca3778737a343b9b2094b9234fa6746b090f27a5209b4bc89576d85ee04. 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/QZFZ62205577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4408b3ebd0ca60d57c7021c2ae360ab3c4d0af85c901ced060d8b8a7fb9addc1. 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/QZES82287221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32b2340e467d9d64f3d60030696783f37032cb3e072f419ca7f2b37d3932c365. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZES82287223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73671861abdf780e27f2048cb8388699617eb8488483fcf803b0749b49fc3068. 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/QZK6K2209782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d2f184a87699200fc4c0ef97bfdf9005e7ad80af3bd231b4e6051da25df5d49. 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/QZK6K2209783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f4ffbcd172692fe856db2fb99efddb6c475670755cfc2c0dcefbac956092f49. Chain 2 (Bitcoin): anchored in block 957067 (2026-07-21T22:39:18Z), 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/QZTB72322877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9d30cd1a2f5457ec3d825ec74e4e256fe5562dc79623cbe7a5ff8fdf72b51f2. 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/QZFYX2283273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5faf7630016f3c3f618a782404dea82cd9fc2fb2e429ac662578157b6f336b1. 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/GB2DY2100370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf150b48808be1e6b70e513d220b55a65a3e7185234c3105fa74e4806f206bd1c. 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/GB2DY2100322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc89991ae5b4e123671001e8e6dd69d1fe4c1205f587c3b8a1cb626adb9c9267c. 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/GB2DY2100409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x753f78b6e8cfc691809f9f6062e8880bccab24aeb72165c6e3307d30d20487f4. 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/GB2DY2100407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf150b48808be1e6b70e513d220b55a65a3e7185234c3105fa74e4806f206bd1c. 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/GB2DY2100322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5faf7630016f3c3f618a782404dea82cd9fc2fb2e429ac662578157b6f336b1. 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/GB2DY2100370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96f3a75a580af8bb824924d82830f99f33c1b43cb43d503fd0c1810c33d821c6. 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/UKYNM2100018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x876b7806a8f62a83e14a513c85c7d5bdc92a561746983626a01dcaf7568dfbf9. 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/GBLFP2113070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa329552616ca39cb2ba34d2ad83eae62f419c42fdc89828997198c447ecd73d. 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/UKXN21979038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x734d59e4e0f77e614f3af3d7d81eb2ab7e6833eba1d160615c585fa7ec33baa3. 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/QZHNB2062234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ee6f18c830e9f6cea56b9904e9e4ae5f97e8ccd487d529d11340672e20bd5d5. 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/QZES72077566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5acd04b08e472a45ceb9fb7b8eeeaaa86b6d5de042ff978dcd1cc9c2b30977f. 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/QZDA52006507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b8633072140f0a5b850d0f928592a4439f56873c9e7bcf51ef790a9d3dd3e26. 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/QZFZ32096866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaca3b1e8eb09bae6c7de4818483984f5d0ce17abf7dd0e83f09580c6c7088a8f. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZFYW2089306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26dd149af175adf7996cb1b7a8154bd890b2b66eb98e3c0041bac060c8a522eb. 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/QZHN81986392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30d07701cf4cbee1e1c5efeba4ff5ddb20f45fddd6dc30b5de9a8694cdf4fe50. 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/QZHN41915156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3183e4043b7b3162a9120d091bbd0847b1cac5d01c3e899200a6a01bc4c1c2f. 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/TCAEH1930381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6afa71ed11d93bdb614439353224952378fa3150b2812b7ab61a6f3a624ef5b. 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/TCAEE1977304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4408b3ebd0ca60d57c7021c2ae360ab3c4d0af85c901ced060d8b8a7fb9addc1. 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/QZES82287221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cc674d6c948334fa9eeecd682236b0bb9b2292d7bfec6894a1891492fa0edb8. 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/QZDA62289359.