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 0xeb6e0e6362dfdb86c09316f546586738fc608fffd1941f8d6bc67ebeb045939f. 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/32d666cc-af05-4e54-8f80-6bbb8b0b8f5a.json and https://artists.proofprofile.net/proofs/artist/32d666cc-af05-4e54-8f80-6bbb8b0b8f5a.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 0x277713f05dedecdb16122fdb38867af756d6e04f31bc3904e90708c6bc56af13. 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/QZFYX2313792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x986e07705c31e190e3345d50e9c6861d62368a2281c53f9deaf14e6fa8bff30f. 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/QZFZ42329201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe54ab2f5da80d73bfa837f80b2f8c86e4dff420867a03566ad94af9571d458ff. 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/QZHN52329748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fa8a05b7e4f08a192db36628be303049ddc5437479699afedc8a3fc705ef897. 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/QZK6L2304465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x412f133f86df68d728d5dacc53a35b2d7f6bebf1a044e6e02496a7b047ae2366. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:22:14Z), 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/QZK6H2399808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0da9e862a9c47c130678d031235c9f2da6297dbbfb6c4af325f1931e99aee511. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZNWY2390986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3d28cbaea9ccbcff858190965c3faed9ba596d8fc2b267e4d98f8ed435eaeb1. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T06:49:10Z), 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/QZTAY2315098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6680eccc7db88cd8ca431d6267e4c18e683096004696a5467f2bb2742fa68d45. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:40:29Z), 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/QZWFE2376604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x054e56674e0244ab64592c539f46e51b95613d5ea3a33f12baa6daec33da3d2e. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZHN32450341.
du brauchst mich nicht (Я тебе не нужен)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x283bded7ba6bd64726a7cfc345c8e3c768b5df642a24007891d02145ab063397. Chain 2 (Bitcoin): anchored in block 958658 (2026-07-19T04:09:09Z), 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/QZTAY2448240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1befd896a98c1bbbf129b5c34810be13dd7fde43fcc5c9c709337153ef006b90. 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/QZTBD2463398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32daf7d06fbaae65581e6cc9a90cdecc5d69f93a0e313fef673bcef8c8b15f0e. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QT3EX2413514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2d0446a3b0351fdf957c76a695bf0a4760a59e6cc5d80f52d334021d886ec4f. 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/QZES62537259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e6b1b07ce305accf9b135559af127a25d047166b27920235868cf15efd6997d. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T16:21:23Z), 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/QZNWT2569229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45060ebfdcb5a63b86c3dad222c32e89794fca7512129710ba255f56e4d89340. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZNWX2502628.