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 0x8cb1621f5a9c25a56def141c1142b2c92b77676d6efbc3105198af1271b2c98c. 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/b00fb6cc-fec8-451e-9725-7631767bb04a.json and https://artists.proofprofile.net/proofs/artist/b00fb6cc-fec8-451e-9725-7631767bb04a.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 0x66a9d86700a704237c1c98ff2562ded5ce9c0fda96eb65acf4b75a2014da0322. 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/IDA141900130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1d1d9308f267469c83d3719d1752d98a823e6dbbc37cbc180d10db8e35b073a. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/IDA141801874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x913215324088a637cff733467b22ed855b1a0a472e3054aabddbe75ee88a834c. 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/IDA141801875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd9e42de41bd49592fd9e74f34a792e818869be84c4df6335c093fc7dd687b70. 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/IDA141801876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd52bac2279ef7eeeb908e24eab1b5d00721e32f9c3c22ae443a54aa1e299b65d. Chain 2 (Bitcoin): anchored in block 958873 (2026-07-20T11:48:10Z), 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/IDA141801877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42852d01fac378f8f1e6afade6ac2e5c093f3c15a8f7f56e00fa566057e4f3b1. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/IDA141801878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf587590638de21136980a99d2cd7be8f8a6abca7e03c34cedac71ccc3c2e5a9e. 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/IDA141801879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18fddbee81d553b10b5e981314759abf546a745def4cc21ccae5de311371a6bf. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/IDA141801880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03e670c17c3614e45039fab17f13c73e8cd4bc4a657d6a349973bda4f5a0cd99. 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/IDA141801882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9b84503e0324a42b42d4eb61b654d0fd05f446c9f770e185e9c713f4a378bb1. 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/IDA141801884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24aca15213ce7cfc3248e1b0c24fe15b75fffc970cacb0a0aa4693a708458065. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/IDA141402709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04ff6c1b01d0d261f62127224b8ec0ff767d75ac2a07fe9b59912fd4e1a9411d. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:10:39Z), 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/IDA141402710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e8909eea7d45f4b0150ce687a48c22342f9b88fa713e67cd960d2f8d8ea7242. 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/IDA141402713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69de4083378165afe540375c5315c70397bd1c088dd0a5e1bff19fca75264731. 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/IDA141402714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbebfbf2c65a3e6a7e8bf3fea199f7c19c092e2dc8f15d67f5b090033fb9c36a. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/IDA141402717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fd30153bd326ebf85905758f858b5836b922f8b88827f6fa8346491098336fd. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/IDA141702323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x326335973ca158555b47cc7919bb71578e8a6d0861656804d9f50f8cbb45dff5. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/IDA141702325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7050639991b4ef5ef9f3c28a3d263cf66bbb79a56a3b9825cf8c1490c1348f3. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:23:58Z), 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/IDA141702333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fb5284ccdf7e668bcf4c67cb708d0ad9d4acfced606533098748c84ed14a29b. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:29:43Z), 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/IDA141702342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa5e94f7ecbba8f502224984d34e8c012d0ddcc2182ddb4da27c42593d030aaf. 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/IDA141702546.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04f377f629d47927ffc0a6414c6912b7d11cd7f7c468a799791c1f949b19d858. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/IDA141701726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x517cdf45f8831377dd42cec37eee15f9af0edd982d6e361f8a317d0bb199462e. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/IDA141702410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfbe8766db39e92101bab2a79adee93340d109c067958beca7988a4814c95cc6. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/IDA141702422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb48f037cfb84443f26e0f094f0d883fc57a9c64b0d760f31bbae69cad7aa9ad. Chain 2 (Bitcoin): anchored in block 957583 (2026-07-11T15:53:17Z), 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/IDA141704779.