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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c823e33bf9990ddfcc5d27d228ea8b31350c20dbe14f338435606f70b3bfcc5. 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/51239f8e-6387-4e9c-b311-e5fcf7f0cbf5.json and https://artists.proofprofile.net/proofs/artist/51239f8e-6387-4e9c-b311-e5fcf7f0cbf5.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0360ad8f0e6b5282c36edcf79f59f1fb3ef1f157a8f3e496a0f04396fd0cd86e. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/QZMEN2441201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb12d9e77d9e89b131c7b68ff6bf1d65394a9d5d9d280cf32554779a53e687970. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/QZMEN2441202.
Carnivorous Lunar Activities (Live 2024)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde2e57edd3170bf1e871da8d4159a40a48dec4117920669bf0897639a27c8608. 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/QZMEN2441203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb9f1e82236c338db0313f7012d287ab00eadab9f7036be9bd4b9f6ebb4a717d. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/QZMEN2441204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac3c3af1b8a77c69e6cede96804ee7c16b222a2a1cbcd5c3b2a1d3009da3ecf3. 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/QZMEN2441205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71af14dbeafb14191c11bce5b453959172df2b21dc38c73160cb6e869b2146cb. 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/QZMEN2441206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19c2cff2995ac420082f0af53c064d3385e870939969c4566340a0d8c5949c8b. 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/QZMEN2441207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a7888cc6f2ec218c3ed895fe57c468548496c6bc6fff75d7ec090f54b01cda4. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/QZMEN2441208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3833398fe11501b0cac750ffcbb1f05ee9bae0a8489b0f952857d380069c7c15. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/QZMEN2441209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d51a7ac4b115911306d1f2b7d4d17ebec13e061b5770b639f2f50f78a06120c. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/QZFZ62022831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44cf6c4647bcd9facecfff24fc5bf604a8801f62bbc012ea3cd3bcbab9989834. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/QZFZ62022832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3f80795c9e8aa816d92f8f189eabd4a83d7eba3349c6bb582307cc2f2b6ce0a. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/QZFZ62022833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5744d307850c0cced0f2fdc6ee749cd6cc5efa1b61c3a1ab2ce3b38294dc3a6b. 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/QZFZ62022835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6622203f93954cb6c523e135a0ee1231ce3d5c8016ce2049dfeeba48b97a33a6. 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/QZFZ62022836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4832ee5c8f5a81788bcca6f15244d55d9e055ce3bf8ac81cca9161ac437a9d47. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/QZFZ62022837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e7bc840c35d247d681d3538fc55a66a5cbe78de61558ce6c98eecf9928ba5eb. 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/QZFZ62022838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f19571469bea7ac33ffc7d18fea565c24e951426ed65784c48d788cb12b81ae. 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/QZFZ62022839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd53fb83c24386324c2c70ed78ce419855119bb3b94bbd20a6a98db6c44dec20b. 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/QZES91901760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dd7cdd922b5bb7d3bfef6a6118e5e1eef7b1786e8a1c5f647bea17642e952a1. 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/QZES91901761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b267cb224c9c31f0ebe805b8944612c51fb93a19ff29cea1263f7c7f2dc869e. 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/QZES91901762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e3451bc5dd258014ec201a1dd8ceb4ba16ad5e39837fb5d7a82c1586105e6b4. 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/QZES91901763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa88d265f0170e72a6ef6e1f7a12f7b979b7c7b089695757685b17f7b9cc3ad6. 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/QZES91901764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3cfeff2a26782990b06e193feeb305b8a2622914e7942d4b2d418e8f5b96ad4. 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/QZES91901765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54a60436943c2dc02b3c9f4e9a8e00b2b78807ef96a11421f5a9e3597267672b. 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/QZES91901766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8354e413c214a0deaa5e0a9d296034e710d90d9830709fb84783e224776957d. 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/QZES91901767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc86b8fabc940bcb4f4707fc2c5fd8832544b0173e939983351209e5718bbe476. 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/GX34M2100253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x232fe82c1376496ad7cb6a4379470868cb3757666ffa940b84ff2b57772659d5. 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/FRX452301415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x232fe82c1376496ad7cb6a4379470868cb3757666ffa940b84ff2b57772659d5. 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/FRX452301415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01b2d095aeaf42ec6378aad06ed703e3bb40107a01f180dfc5e8b5b4a0bf460a. 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/GX34M2100078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x856a68230c7dadfe53fb95604347be0fe0477286d88ed81dc8a161ff8ce857a3. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/GX34M2100079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe3114e3822ffcf632c3cb9613b519240c0890db25a3aeb1b69c9d1df2d86db2. 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/GX34M2100080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1be29a2d2387dcccfe07d25b8b54a030062e0549d5276f7a9aeb15300ef88ba. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/QZK6F2056071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf482ff3797118f651c0677c806db2a1c420491146a2ad5264dedfef515614f0f. 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/FR10S2538676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbe48a3efd92b7ef2e136ee43f41c7ce2e1f9f7b8fda99ba7753281f4cb075f0. 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/FR10S2546051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7cc0ae2ec28ed99e08969101266d7e0733db1dee501dcea0df2b71693f558f7. 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/FR10S2575922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7cc0ae2ec28ed99e08969101266d7e0733db1dee501dcea0df2b71693f558f7. 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/FR10S2575922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbe48a3efd92b7ef2e136ee43f41c7ce2e1f9f7b8fda99ba7753281f4cb075f0. 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/FR10S2546051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf482ff3797118f651c0677c806db2a1c420491146a2ad5264dedfef515614f0f. 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/FR10S2538676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbe48a3efd92b7ef2e136ee43f41c7ce2e1f9f7b8fda99ba7753281f4cb075f0. 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/FR10S2546051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf482ff3797118f651c0677c806db2a1c420491146a2ad5264dedfef515614f0f. 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/FR10S2538676.