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 0x293118b4c896db30864cb0dcbf79854085c374dc8342191e4bb2a191d64d95a2. Chain 2 (Bitcoin): anchored in block 953600 (2026-06-14T06:45:44Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0db4ca5d-d8c8-470d-9e66-fb580dbe909d.json and https://artists.proofprofile.net/proofs/artist/0db4ca5d-d8c8-470d-9e66-fb580dbe909d.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 0x6c4e1d4a082c176d21bc8771d46d862c9f9cbbe8a4e39d6883caf834decc0764. 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/QZTGS2300043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6c356bdb7722ec682c2d02750509cb3f041dacea373cd3e79aebe5e08ef5664. 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/QZQMB2102524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa10b91b5f900d076d32694feadef7cc48fb55421509e3dfa7dc431efaffb240. 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/QZTGS2400202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4617fe38b630c9ddf737a99471be5ec4c233e1eb8ef0bd033235dff62a555bac. 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/QZQMB2104155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4155f31e4d3ee2675c9e0d291785af4e0a9f0368c5a645858b61d45cb74eacf4. 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/QZQMB2103097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5094f950b8ae222993d1b6910a0a13713ae0a4d04cc735d44f8ceecf84d18b81. 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/ESA011641334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aea3e105b5a094c2d6f3f2af2cfb397450e216f04cd7cb42e60d926a753dc18. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZTGS2300055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba7c84d418d52d8e003435a0b478517b42562a2ce553a5f686ad5864403c978c. 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/QZTGS2200240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86a67f4ec7e2b82c655fd0bb762308933481c58cb1f6be8b6a5bf3d4f648fa76. 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/QZTGS2300030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30172dfa311d1b450b397b9d115a0cccb4fcaca13fd9ae703b2665b6faa9cfe7. 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/QZDQH2381773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf5e386e9426f97f08476a48b8413ec774bb00aa80c4074b63f0a92f4f2ed99d. 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/QZDQH2381775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9269b681ae7ecf33b26c58f051438a9b6cc54df76f63ee237a25e7d1bab433f. 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/QZDQH2381776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e024715311191a3ec28b95c90a423a17728ad84b2032efe73bb6283d87149fb. 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/QZDQH2381778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b7fb52d060dc00bb15aa0aab382dab0d17c8445c690fe2504cd0c71ebf6336d. 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/QZDQH2381779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e2db15f90d82a56680e2a633a1b13c159efa9bf387982945c239c03561d0fbe. 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/QZDQH2381780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffe26aacced9dff6d9691af5d928015e6731ca9febc63afd1055026bfade4cb8. 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/QZDQH2381781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacde45f518c06bd0ac7bc1d16e9dc063744d7d20d67123aa0fadcc3d9fc66b71. 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/QZDQH2381782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8660b59c30e043c779143d990d269423d8069184827d0a1ed60e202c3e4303aa. 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/QZDQH2381783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd25d8e9d21b98b11a1923666c242cffb436d6e3c194f261db9a28b70a299338. 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/QZDQH2381785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5b21a8baf0aed73a807434b5c035d1b214f60a201d134c1b4caf99594e25fa3. 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/QZDQH2381787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x520d8f58696b9f406c01aefb8f6b6f2f27d0c920e77f7721720e79f8b259baae. 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/QZDQH2381788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cc37ff7e3035bdec8f70e711727f2dbd20bd719b8459ebe9e731d8333d06c18. 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/USDY51003166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55bfddd8c803bc9eae22c291d1f7b2d5f95e3c51f6632a9a6fd8e9cfac7fd699. 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/ES5770604783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c4e1d4a082c176d21bc8771d46d862c9f9cbbe8a4e39d6883caf834decc0764. 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/QZTGS2300043.