1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x9607dcbc817e2ffcfbf748642923da91b7348a64fd31d38d459ad6ca85eb439f. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/95fa7f34-5263-49b6-8119-79624b8b9d51.json and https://artists.proofprofile.net/proofs/artist/95fa7f34-5263-49b6-8119-79624b8b9d51.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 → block OTSBitcoinBlock must exist at that height 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 0x0905e108305e4d3bf75e67a3ebb9ad232a4618b6e54723cbbf52695f984bb4e6. 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/QMFME1553232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81683c9859451503c4a23a855efbfea10e9324af77043a3df8c146d111755f1e. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QMFME1553214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcba5a446098f23c9dda34d43d605c2496a68664f05a97f4c11d4c51a05629d98. 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/QMFME1553223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x782906c0525565c0e058f68fffce4d24fea58463261f4e34f598f45a5778147f. 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/QMFME1553197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb59fe721953382764c3b93a4aa97a64698138815a0efb9faed806e3533d551e. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:42:32Z), 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/QMFME1553189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8caafbf2ca41492617431d833baf9dd3a8f12c1ae9267dc3f2468d8b882905b0. 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/QMFME1553190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf026d50219df9944ff09df4ed40e2bb534ac9da00bf2f010d298f1ca08eba3d. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:19:15Z), 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/QM7281773452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4846caccc3d821ad206cc7870d0b69b5883e28b8f90347196a9136990a0f7db. 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/QMDA71846627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ca3fc556fff5fe4e24cadfba8a9fe0193a024c9f09a65a6e018634f1dd6930c. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/QM7281996381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x491e206125e7a02deac6911113cee2d1d3d7afbcb3fb160ec4780f108457f4ee. 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/QM7281996383.
Человек, который пытается переехать из Петербурга в Москву
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf013a3cb1213bcca63a484af6a0f6a7bc22a41d41694aacafce2126727f9ecd. 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/QM4TX2123527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30c764cc942388a34faf1c9c0167b6db0f37b3fe9f0ab4d50c71bc81ea5c26f9. Chain 2 (Bitcoin): anchored in block 958653 (2026-07-19T03:54:23Z), 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/QM4TX2123528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc88791a4ec658f1caffcb6c9ab17edf0e2c05769ca016138856bbc06ef83776. 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/QM4TX2123530.
Человек, который пытается переехать из Петербурга в Москву (Deluxe Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38c0c45762be920e02a00d571abc3d31c53d25a19ec1e7dc31519df5e97f968f. 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/QM4TX2228201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3d000d78b373184fe3add6a0148ffb51301cb6090e63d0b00b70be6bdc3fc26. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:40:12Z), 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/QM4TX2228202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8752873678de118b085f8e2ab3395d50d366def9703cccf2ad9158cebf53ba9a. 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/QM4TX2228205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91546e0644fc1b88f94b14a50e6c773303670c2b3e7d48dead77ffcfbfcb9f7e. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QM4TX2228206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85a54bc3242230bc819b864cdf8f2c9f70fc6a03a42af0e7ce1a6a51e3f0bdf3. 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/QM4TX2228207.
Снег и пепел, Volume 1: синглы и раритеты
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ed0d2338ecb89c084875cd7d75472b5bb9fc205ecc1f95279c01bfdb533a15f. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/QZNJV2261324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe266dce348f394816f7594eb42cb004966caf0f44590a7c840f609c7d2309cef. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:44:08Z), 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/QZNJV2409275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c8b8d19e4da243b055f96395e5e468effce7115c5a7cea217c5ff342e3f0a64. 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/RUA1D2245634.