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 0x9014a7b16766f382048952d6c188a596298ac31dcc55b144ff02f091d38dd02c. 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/3e64380f-0b6b-4524-acd5-f71c4bcc1a18.json and https://artists.proofprofile.net/proofs/artist/3e64380f-0b6b-4524-acd5-f71c4bcc1a18.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 0xc4fcefa8499f6ad1564912ab6c623d4bf9e9952623f80016491aa9dff8d300a5. 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/UKXN22240050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e1fb82eef881096c2c41ff1330bf047f0e4751eef41ca81733eae31f54d646e. 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/TCAFU2110194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x817d786fee431874af6571f7895f7c0835c2155cd9aa35143f1d33ab18e39a80. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/TCAFB2096244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29985524b44d1630bc7aac001b0aa7b4602a5e89710eaed90561078fd7f32c84. 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/UKXN22288340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefdcb705c41b4f6a3911464385dba3fec110711a5d459c11913be2b0238b0afd. 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/TCAHO2368220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf446721cd1454f192e9a4b6bc560b1a16ee3dd22ab9546870c3174993b50c48b. 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/GX3Q92334434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7a436eb74344e0d7f2dedd87adae2608bb4c7f8653d0a8ea3b9cf15ffd69ee9. 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/TCAHH2379740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13090f42fc40f4ed2a6d88fe6c02b7c574eb024ae269d371514a2e6eb3d03d8d. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/TCAHD2365081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x660d85d620df0ac24f5696ba899c5f1459db3d6a9f08bcb1bf7e35b02896c387. 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/TCAGQ2284975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf4e1e2a89ea02c7d859ac5344ca075d9f2aa7f2094828b361c58e600094e4ba. 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/UKXN22451795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab7b88b3e0a8a5b22adbb9b851f5508a4f5db66fb686e102ba6b9b8d198be1c1. 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/UKXN22252416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf1ab84b126dada7651ee9b56a1488a1006a90ec5ebf9ba332aab2a8fd92627c. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/TCAHL2364600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf150e44d8bc956f119374d0d3267c810877052a1d9e83c385caad2f3790795dc. 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/TCAGA2235309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bd0d08210b224a076e9ffcd11ab188375e9af5c1c1db607bf228c25f7b0f1e4. 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/TCAHM2375910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39bc2ceb848dddb0458862b0aa63db69c42e624f7f7cd3eb3d2bdd5b18268e21. 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/SE6SA2354473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x603abaa0cc9ca4dbedf0de251030152ec011bbc1cb7642c54a053e4e5e7593be. 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/GXBAV2578899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe26799448f526bfb693c68d6d6e4b0d37e1f6cf1795b318857127b46fd71c2cb. 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/GXBAV2561692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6a97a8f2c64da65f5d9361c50a443eca310fc5cb4f218ffef4409764f2f634d. 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/SE6SA2416975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbad35dd85a1bce73afbb140dd767381bd519fa7941dd13a71fd54fef164faa27. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/SE6QE2464608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5136e940fcca3a66f723209d5c3a41bec7affe2a6b735da291c594e00b194ecd. 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/TCAIQ2452587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b59a44a2d213632f0f5daa8e338b24cb5a17faa287fa03e00ad6ccb7eadb236. 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/SE6HN2485018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3a9e1c3a1993f3f51aff3ea15666e682efd1cae2989b8af2faa4b667ccf0a9d. 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/SE6HN2486073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa674092814dbd220db66b0de94a75a3e78929b1ab7d43f05d76f4fd998d426c4. 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/SE6HN2412580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1e17445a8c25d30529b4a0e27c91ddd5393b1006227f0e3a6676620603ac3e3. 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/SE62M2357671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3010ad0bb34b9c868a432f209fc93e59eb966d8601f9ad77c23deb4187503ff7. 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/TCAFG2002697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x973c164e22c976d1c19d0603570e0bd3fd063d2b7280551dd6b30ffbd7adc533. 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/TCAGG2264848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d1f97748f44026d25e62cf51d2ac9daccb323cd1d673ab6a2961983b7f3fe5c. 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/QMGR32243278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0a7ca8d6edf49096005b7661b58b1b3a1b4a0f9669de5a1088fea89517ec6ba. 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/TCAGI2211548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b9945e68b077cd9a309065a60b73bb780e45dfe6bba2ce76c786b7854407105. 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/UKXN22251569.