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 0x74cf17859e6491edc0fc3be1d2ddf41c7fca7cf9698cf64222e5ae083894fe83. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/50b77252-d0b8-449c-b31c-ce036aa550ac.json and https://artists.proofprofile.net/proofs/artist/50b77252-d0b8-449c-b31c-ce036aa550ac.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 0x889473871ad0f5a119b4bf4fae7503d2ea4f541d9662db865173e7dc0fce2337. 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/LVA101200333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32668d30f43a0b5710db2d55c5c27ae2a0c20b8e28dcd4f678aa4c802e44ba42. 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/LVA101300259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3e3c260365e5b1896d146f7d031ae039c88364dbe3f4a2c28c3d52506de54bb. 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/QMDA71391549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50fefff6b1c227f9123a48712223ec62f181c3de4d065580b8d7a04a03268dc3. 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/QMDA71391550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ef76f75912f13828d42a1bc289b103e5ddbe92af707ca6c32dcc3d8409e4359. 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/LVA100600359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f8e01643ac06110fdf120357915955456daa5878b589cadec8a7e96d9af2bcd. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/LVA109400032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x218581c694f2d43d1caa306d9f6c54a8e60861db4bab001faaa58f35aaabbe38. 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/LVA100400055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d7551083b52e9e118c2a30767c66b0155405bda8bf53eb3cabbf023732d6913. 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/LVA100600225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79fd824edb57fde6d7a87f8ecc5d99377a53fb5bb7d56355d7bc0717b36bfcdb. 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/LVA030500030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87586d13914686a280d812d98c3e3de39cab833af59db4ae11d256d2bfa2535e. 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/LVA100000023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa69a4c839ad9a6dfce470ba6a71246977be60a81f804a3f37f36708dd9a795fb. 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/LVA100400043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0273ea2cb5ba15072f5b1e3e7490e2f9fddb2bfc9d6d381dc5434b5c0313c420. 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/LVA030700042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00f73b545a8ef7d091af97e7495aa575f7112ce0c5e3c25380477aecca8f3c81. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/LVA100400064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0efd02ebefe11fd01334cf711e96e0dc2e498ec0d44b92ab2cd5a6cba4b0a5c6. 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/LVA100200186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3824d524d9fc79f592424360d17c305b9e008f04fda45a43a334c71b2f5ef02. 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/LVA030500025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x281435424e17e7bcab268b37810a93ec503ca073ed338f0a8bb53642eda62981. 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/USA371257727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89de9ef629b5d19dcb8e78892e4611b0be88a2f8b80169382546fa5bc96ff062. 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/USA371257728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89a55e6efaabf9824028c69709ae6dbf009cbd1f010729e184efdd9450992ed5. 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/LVA100900152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58aa959f3d7d0e9d9a3e03748f184122c9ab3045dfb662b49114a3682926843b. 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/LVA100000025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83b24ccc2bf2bc8157fd8cc4a17e85ba8344622b766110b6ed1ca59f39f7b351. 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/LVA030500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3c59b748fedb80ae3b6870605fb82498bf4ad5e37622bb1a90f04478dc8aff9. 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/LVA100600350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf53fd8544b58d647d2e315868c23dd58eab8d77b0c5f318b7155ee1b8cd9acbf. 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/QMBZ91329478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x917293ffb76030d3bc3b31da2df94c8be29fa84a812b7fb6e1fce6e1e1257a25. 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/LVL152300391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe054044fb33ec003c52807ec728dce2c7fb4d789c124a5612a75ab98011dda80. 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/LVL152103959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0043a2101f57f6f870a9ad705dff5131949727fc1f876c6f36a2ed1fe82e00f9. 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/LVL152003709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe8f6f3301bd3c6da4d717cb2b3c72f2cbc6386a06e3fab98cd2cd4f56949ec0. 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/LVL152002421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5152a0d3b4df2736e2ccc488b76bbc9da1fd30ced89e53aae1b67c2f2c4299e. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/LVL152000734.