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 0x76d2862252f75b03cce8e33046cf2904cb8f62667e4b5c8c020bb3f7c3fb4d4e. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/58a9fca6-8be1-43bd-b51d-9313167fe0d5.json and https://artists.proofprofile.net/proofs/artist/58a9fca6-8be1-43bd-b51d-9313167fe0d5.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 0xcbfc8665f10e30ea27004608a07c8f158d96761af569a0f3aacef69b1e25e3a3. 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/UKU932431205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb4a12af34dfa8da5d84e5672f6c031ed258317a23db0c659d90611d4fffd60b. 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/SE6XY2301956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0c610b0030e80b8ae211e406d19d8e5f3dd614592546eff3dd905594bd5c4cc. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/QZNWQ2201534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb77aa4104b69d281b0fb50bb924bfa56680b4a3cc0932101edf5e66a0dd49ea3. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/QZNWQ2201535.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69a5e50ed8aa75106ff7c44e3a6451ac30fee2a8a81ac3c76d5d4b305c08c6fe. 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/GBKQU2165046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bece296d0cba3d0f4b686140d140344e4f1004b86dc72dd101939c15e6df77f. 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/UKU932432074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5d127cff3c825e792765a9b489486946d95913ec60a98f93fd82fc05cf9e8e9. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/TCAGP2298236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41bde55fd7c52e043fb775bfd323c24f98e01c3effbcdc7ef7cb0b4147dbbde6. 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/TCAGP2298265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7186aafb9c7685a2a21935b7e9fbdaff14c832f45ef14d01544ec5ae2d57c544. 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/TCAGP2298276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45c45a3db83791836dd1247ddc828c833d243b89ae80b5eba9cacf6e114e102f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCAGQ2201907.
Alles Is Kut En Dat Bleif 't (Schizophrenix Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc45b91ad45b6087d5f19e4543b075c745ffef4d29605685af607a59b80e6f215. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/TCAGP2298213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9309c72444dc972cb84b7161796b37ba6d7688558227dc27a2c978bf921a2ed9. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/TCAGP2298224.
Iech Kom Oet Limburg (Schizophrenix/Kimmercore Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06760533482386488dde35df7dcb094215a92244c51265d30a62691c393579aa. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), 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/TCAGP2298250.
Sorry Wat? (Schizophrenix Kicks Wie 'n Kassa Edit.)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5fc845c5c2cbab5e40e38411b42a5ae25d7f0a4e2a39abc778285f698fa211d. 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/TCAGF2206075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bad862adceb285468e2345ad754c67d7740d8d1b3864685a2c0703753730d2d. 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/TCAGF2206083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9cc3b49eaaa02b8bdf45e2ad02e5891eff76c5e1a67ea900134cac0e46aab9e. 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/TCAEX2073337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7f8f10d712b35152f3dad32544a5987ca8909223c0734c1794f9b80a730cdd9. 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/TCAEX2073342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ce3a9d07ca4b9e9904a421719afcb70ef16fe79c273932764764f9c42dc43e7. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/TCAEX2073331.