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 0x33ca6289a4932da431298745943cfcf5845d48f49b698159214170e8073d9815. Chain 2 (Bitcoin): anchored in block 953713 (2026-06-15T00:33:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8371f58e-a90b-4409-b03b-ba3b1a283953.json and https://artists.proofprofile.net/proofs/artist/8371f58e-a90b-4409-b03b-ba3b1a283953.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 0xb36eb00447c516922646b608fc0561fdf8839bbcef27032cff47cb166b2d8b3d. 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/QZDA82439534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb38a10ad4dae92ba8d77d84ad1c845fe74da4e8fb552b4bda245d55057e8c13c. 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/QZDA82439535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2ad4ff2c25df8ece2e1c1589f10e81437643a0332eeb5cf2df97d8c04ee3644. 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/QZDA82439537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd9c6a8010691ea337218ad250999fa6150e02762ec4ad03d08d5a267b008616. 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/QZDA82439540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x220e928635b35b7c67bda4ddf89fd0152c28a21b105ec483ceed1cac42560170. 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/QZWFE2366229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0ec6c6f9b6e6e473a57a89707ef069522b40c16cb0af6ccaf453ce82e27db5c. 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/QZHNA2258040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca5acc46a05e51080e604e8e4df38eb95365a1cfabaadebb1afa8b40d33a6a58. 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/QZHNA2258042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd96710d0e7e81be334e2bab7a28125743f345b9d004be1c40bd78fb8e2d19d2. 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/QZHNA2258045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11c2f4857937a96ac6a2e9bc47eb6df1ebe07e2cc243cd9d1a8e55e4bf1113d2. 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/QM7CR2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x220e928635b35b7c67bda4ddf89fd0152c28a21b105ec483ceed1cac42560170. 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/QZWFE2366229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea0526dc52a6554d259ac88aee1846f74fc97aae4c79ecad29f9bb7dc287ec5f. 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/USUYG1493210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe87ecbd5881a8ac734c096fafa3b71be610b12ad715439c59741a426758974d5. 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/USHM82131411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc50397564b2520fa5566d81647cea05e0cd2808522983552e9d3bce332b13473. 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/QM6N22195094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92a125e09f9457a08fef08a09effec880a8bdc714e37eb8eea8f1fc0447b5d44. 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/USX9P2038263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacfacceb9a7edbd3ebc9b88d95fd466e11c5b973abcb11bbd444acc805fb424c. 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/USL4Q2069218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a5b58e539577289b27ca0f4924a1de69f32df52b56b61f2bc7828076590f87c. 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/USL4Q2069219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b50b59aab9bb2e8bba3b0998f22618a54d6acb68e627b22e9327b4d75235e70. 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/USL4Q2069220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4aa550989bd17b10320fc27765c9c342ba23a24fad0f0926e701b691e0e7fc6. 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/USHM92042611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf52acf45d7e0122a6ef95e441891adac5d54c034da08ba2744dbecf2cf084d67. 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/USLZJ2379560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdab65141eabead69d70491bd13b68f8a100e5e47803c5d8b8c90aff719828f85. 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/USUYG1505097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e2700e731bd8e4289e73687d813ca626ec13ed7f74649231e3bf282b18c89a5. 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/USUYG1505098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea0526dc52a6554d259ac88aee1846f74fc97aae4c79ecad29f9bb7dc287ec5f. 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/USUYG1493210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ba7c7053e3ae9ac9554b77069e2b8cce2dcd1e59f506a91bfd1ae7ef2b7f461. 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/USUYG1501141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6840a4baa9346f06086c17874c40afa43641cc9e2509832056613520bd68946f. 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/USUYG1505099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3238a66d58d867b06b545f886b45ac284c83f3d9afbd247a2e876524d86dbed0. 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/USUYG1505100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x522e43bf45e34d3f7894c9e18b1b3fe13ff01df13fabd60d79a3c767af4e8884. 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/USUYG1505101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8abdfc30ce60b286d8a2c0511b259960d33f872e93e6544da6a9f8a9f613ce72. 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/USUYG1505102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x643f274b6b4ebf87d92f37056c7f6627c1fa93620d58ca80b8c84ada54236778. 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/USUYG1505103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63ec7055e2f3517550b802cb561885df4863ced7958006582f9a2dcb3d43cf65. 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/USUYG1505104.