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 0x405dc322a07d9cb59b1738454f3d269482de4ede9f85e24f4aebaba21f2deaf2. Chain 2 (Bitcoin): anchored in block 953782 (2026-06-15T12:13:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d420377a-b5ca-44b0-9291-cfc21fedf17e.json and https://artists.proofprofile.net/proofs/artist/d420377a-b5ca-44b0-9291-cfc21fedf17e.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 0x45eb38017cedf0d64a2115df109b77da589076b4526ac1e48f669a8d5c02f20d. 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/FR6V80961918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca742a2a607015b58d93aae16d0b2b566b9cd0390f078f3a5ea553cb242d8dd0. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/USA371613977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e003629a3b50746f6935f9fbe84f282b31dd0c84a1eb074324ebbcee5ab65f8. 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/USA371437050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74d7d5f5718dfb9a1a11d4b26f694631c47d533115f62217fe15172b65330c7b. 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/USA371437051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d7cecbcd5fdfa020fefebabe6bd28ac0a9c7a728a0bd8684faa2302168027d9. 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/USA371437053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36e2697187f163dae4491728a17bd59743da8f4d0a52e14e3edfb19ea0c5b11b. 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/USA371437054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9688ceff3099a2e7b3a7d3b09ff5dd122149badea976a5f6158ed24aea5a141d. 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/USA371437055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ef474c389f7ad3efb532afcba30972ee4933ea7eba11f416b2dee3412b28fd8. 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/USA371437057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x041464a1508fa73243e09834bbead698b1cb3a4280f65a672ab89568ed0dae84. 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/USA371437068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cf92dceb75dd32bcc32fd85015fa010a41bb2b2b3c3171581b7dce752699061. 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/USA371437069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92d22f4f5a07870256381f4ffbdcd41c08f85a622c1f0250e0ae0b1951822ba2. 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/USA371437071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b08efaff0ba96bb3cc2b33a2db873362c8a52bdab017ce5b9e3e7a12d4a918b. 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/USA371437073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x130b3da88a63fb5935c6eb2411913cdfa1f5a7c580a965e873ff46d844d1c7fa. 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/USA371437078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e003629a3b50746f6935f9fbe84f282b31dd0c84a1eb074324ebbcee5ab65f8. 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/USA371437050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36e2697187f163dae4491728a17bd59743da8f4d0a52e14e3edfb19ea0c5b11b. 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/USA371437054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6054105cd75eb373d3d4165cdc157471236b4837a21b806af9a13022b18acfeb. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/USA371437056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x347654403950a980243188b670c624954a43e82ebc9ef3942303a1fb331caea0. 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/USA371437062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x828abd6eb0f4bce2afe45d30a11ab2e2959cffe256633fe97891f896ef312120. 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/USA371436924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1a4a7958e23313594dca1769d98015e80761c794702503bb374e373f6b2a539. 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/USA371436925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f346d44a7bff27929f17b0e1ec290fad18ff1a939f4f43e039269f11dfe5dc6. 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/USA371436931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fff1a4d63accaf440febaba42e7ed8d1826375f54786534703d611579e09b17. 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/USA371436932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafe7314c504f749726e598b7bb81543e72e7beeea89bbc8e9f183e3680929cb5. 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/USA371436935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66f442efd038ba85091ae6f82215c98a6bac48d288b9ceeb66ef72270f200549. 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/USA371436936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53b8c1b2b05838c347420e0dd3905e48845b457675bbb52a7fe9b7fb5778692c. 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/USSF15884201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x741f28e3fd1db1e941d66fba348f98f56f08c338670b7d1fe4cc5b5cc395713c. 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/ARF860700531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb64a65a82d290993544008933bf09c079cf841c6dc729b9b3e84d1665ca7146f. 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/ARF860700547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62e6cf6fc5356bc3a209c8a66552d52909257e279cfccff85e27df565decbb05. 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/QM6N21567986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9da85a8deb8b909be513d39e0ae164d0de2b1481159829c8c6603ed40043224. 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/QM6N21567990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c564690c2b922fe98447289e56f2759424955c9db64f905da253c65b589e96e. 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/QM6N21567991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad4374ac7ec69ce1d6cac4f1bd3bf0c4a283399dde222b32dd5fc2e746efaad5. 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/QM6N21567992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07bc50ba4d562135660edae7f8782eeeb6cb1ba31efc45500bd4f1ad4e6ced56. 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/QM6N21567994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00420055a634013037208220e216924a5daf0569663353032f17ccd9de199294. 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/QM6N21567995.
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