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 0x7db50a2f926d62a26c67e66d25df7ae3b31f876514722787df5862f53f9a17aa. 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/1df2865d-f17c-44d8-94bd-62578e872831.json and https://artists.proofprofile.net/proofs/artist/1df2865d-f17c-44d8-94bd-62578e872831.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 0xd12ba6b608d19e5afc6b72a43a8c8213979225ecfbc4164a64e3e5cbdfc7b847. 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/FRX282421086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50f46977963604df5915c4f7ec3f8fa68b6c9ba8f70dd1ce43ca72d3e74a72a2. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FRD9M2302630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcffe10bfb7946ffd2b4ee705a8a3dea9b47d7ea5a1db917f95688bf1413aeb1. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/FRD9M2302200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcffe10bfb7946ffd2b4ee705a8a3dea9b47d7ea5a1db917f95688bf1413aeb1. 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/FRD9M2302200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dfa8692037daf8784cae829950b720deef601ef07be1160f0577208395289bd. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FRX282421088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb846efe49d07c0b1e1cddf8a97461057fb0198ae37484e73dd3b7d74572454a7. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FRX282421089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48703cc9afc4f580bf2579fc21cc123d9225796d467c8879352e9153aacc6646. 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/FRX282421087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dfa8692037daf8784cae829950b720deef601ef07be1160f0577208395289bd. 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/FRX282421088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5da911b18af568c1f38dab7f8ea2ba4d3b14e92e2880d329a7c55d1630eed813. 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/USCGH2141692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19b88175ad6dfbcefef1bd7d8764119d869917290071326ce967accf98e28a22. 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/USCGH2141693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b13b59e430ef5138c44c716ab40e45582e30d32b0a02a5e936a77f4240b8e72. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USCGH2141694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x738143ed51ad834e70513e1182808a744edfe13a80c76c004a2d3630a0d2f9a8. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USCGH2141695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7286e199ffeac632ed899c78dc15379b42f8b3606688c265805ac7fc59fc433c. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USCGH2141697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56951e45d1afd7d746745d7800b79d603c571cc617493c78d06564a981516483. 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/USCGH2141699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15a72f261eae20402a464ac574670a4f09e7cb6dabc464d271201f3611ddb952. 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/USCGH2141701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2b80b8b3b0565d32536a6e2162f2cf5f12f7fb7fb902d02008e12279874a1bf. 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/USCGH2141702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b314bb56b91a79a8c405ce70e06fe65495e8339c8300e533b735b12c9fbc840. 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/USCGH2141703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a694a107db8145b1835216a1a800e5f60aed83ea1afb30718aa8bc342da1cbd. 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/USCGH2141705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbaec00cfe688b7045d7db6cc8c46370a8cf854c2f1841eb340e6407d0694cbc. 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/USCGH2141706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f01d3e6434bacc31801e473029c2b290d7676777f6b1156b133dcdb7928ca6e. 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/USCGH2141708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc029410b1e17176c6036fd1844ba6b5bb06eab717801939147fcd18670deeaab. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USCGH2141710.