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 0x571722d1f79de80ff37dd68c6084f60f486f9935a5728debbd14928fbe26a15e. 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/9c81a2e4-9165-440e-bdcb-de7850f56803.json and https://artists.proofprofile.net/proofs/artist/9c81a2e4-9165-440e-bdcb-de7850f56803.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 0x57a782ddc412dfe4ce0a57097835f4f1826ef0c5092e237f5a7c1f92f6531b17. 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/QMFMG2365809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe69b17bad706e429af97c3131db6664309cd3197644d050b8e00e6c8d78cea1c. 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/NOGUL2300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16f5096513cd6b670323919e8779926c73b0c3dc340d77891c1cc5d5398487f5. 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/NOGUL2300020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe69b17bad706e429af97c3131db6664309cd3197644d050b8e00e6c8d78cea1c. 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/NOGUL2300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e0be69deb4b6c2b24a21a1638cb898905cd42f4553e239e2646f2d4341fac27. 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/NOGUL2200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7a92ed149b71af4e1011b9f8855e5fb71cf79fb67bef21223a949def9f69e98. 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/NO22C2141010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c1d466bdff7aa56256c06a7ae630ef3b0bc89cd9f691649b846a9a88be72bda. 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/NO22C2124010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x392ff6f423ec7b1b35dc5e1552531c6dfaf13e2ffb8bac4a8fe7bb7ec4769562. 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/NO22C2112010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd71213a51a3fade75936f1d8447a8d136b0aa7808a4e27b043fb0b91bc1fe7ba. 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/NO22C2038010.
The Voice 2022: Blind Auditions 4 (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65d4076e22df0c0322dafe64f3c5ec2f8ddb0320ddba4c4ab9b52443272b8ceb. Chain 2 (Bitcoin): anchored in block 958041 (2026-07-14T18:13:17Z), 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/NO2DY2200026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2a8647e19cb86850970f3ac0e9f7d6a63fd402b566f1c4270fd6ccfb7b83324. 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/NO2DY2200028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafd2cd5ca0518c454a671631773f5680d5361cfbae5fd348ebc3075450f3c1ca. 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/NO2DY2200029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x901b549a5769f7e28aa6ab32af8e9b0d1a50d45f7aa929b9329a651577ca12c7. 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/NO2DY2200030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dc5bb22a2e94db2dfa8da0aa44bc96e47d3c25f87633697dd4bea4d0def0a20. 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/NO2DY2200031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3806595dcb5634c54a15fd0ee5b4fd0be9f629fce4c295bb53573f3b627073c. 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/NO2DY2200099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x252be8de39272bae42e19f801e4159dc512abfbf0e6f762c5668a488608db88d. 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/NO2DY2200100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66deb9800ebd627a47adf459a6ec5d7feb16db6410ce5713ccb12d8dbd53c241. 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/NO2DY2200101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56d801aff6aa7c5c2868de110ed1db62b5e246916c18e5882b9fe1f4570f5df5. 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/NO2DY2200102.