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 0xb60b6913886a43cb0d2348252bbc5db29604c6ae40898426741d7aafe46eb721. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8a76cf38-58ae-44b2-b615-c72c45a69bc5.json and https://artists.proofprofile.net/proofs/artist/8a76cf38-58ae-44b2-b615-c72c45a69bc5.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 0x1db77b164882a2e1fb744694c3ee4070d52ea0f0a84bfc3eb39bd4636246fd6d. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QM6MZ1497600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x417e7ca8a3e9ee078d5be70473a172cb446dfcb9441f83ba0c00bf680f1377e3. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QM6MZ1497601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4186692e53d3a61ed64a2af467b7ee06ad9e9b348ae4c293da114e4adda3a47f. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QM6MZ1497602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28fc18a48407dd6c395556f1b314fb319a04996b374f963d3a59274b105ebe18. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QM6MZ1497603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51a0e541be2504c6f87167f72c22959169fa401b2478a914f313d1155a670bb5. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QM6MZ1497604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5afea4c1c50b5cc16e77fc85bff1205df9e5dfa2bbcc5b9a89d5c87712046aa0. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/QM6MZ1497605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x301d58c970e4bb5706a0a46fd25a9ddc1349467b2eab48090a1b6e08403e3fe7. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QM6MZ1497606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae7694aa5b2ca2b673fab9bf3faa15eb4e90004b88b7c50513f4e0e0f326a9f5. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QM6MZ1497607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0dd64781e43e2ac92b833bcd858a965ddfac1af05cf9986085f985534cef8e7. 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/QM6MZ1497608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4c26cd52eff920a044ed1d48e6756d92d32b0966c231980347479e508102620. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QM6MZ1497609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e01120fd8a3f584ea8d5a1fd75ef6d1ca944b29aa4362448356ab38da32cc19. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/QM6MZ1497610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x344bb995def4677112e8cf1338eb131b6effc76d25ddc3eec56e9dab34002ed8. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:57:56Z), 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/QM6MZ1497612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22965d398fa26b21888c26ea60e2e48de515c84157560a03a18d387d56473b20. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QM6MZ1497613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb31b42f4225d12b40db209e6bc15b2a26024305f794f39f7ea39b71d1a918558. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:10:32Z), 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/QM6MZ1497616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41dbb2502815305fe6cdb4f613c3a7f2bc9fe0949b9af069f1bf319e4b1d3597. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QM6MZ1497617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1db77b164882a2e1fb744694c3ee4070d52ea0f0a84bfc3eb39bd4636246fd6d. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QM6MZ1497600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x417e7ca8a3e9ee078d5be70473a172cb446dfcb9441f83ba0c00bf680f1377e3. Chain 2 (Bitcoin): anchored in block 957705 (2026-07-12T12:50:42Z), 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/QM6MZ1497601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4186692e53d3a61ed64a2af467b7ee06ad9e9b348ae4c293da114e4adda3a47f. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QM6MZ1497602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28fc18a48407dd6c395556f1b314fb319a04996b374f963d3a59274b105ebe18. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QM6MZ1497603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51a0e541be2504c6f87167f72c22959169fa401b2478a914f313d1155a670bb5. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/QM6MZ1497604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x301d58c970e4bb5706a0a46fd25a9ddc1349467b2eab48090a1b6e08403e3fe7. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QM6MZ1497606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae7694aa5b2ca2b673fab9bf3faa15eb4e90004b88b7c50513f4e0e0f326a9f5. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/QM6MZ1497607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0dd64781e43e2ac92b833bcd858a965ddfac1af05cf9986085f985534cef8e7. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QM6MZ1497608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4c26cd52eff920a044ed1d48e6756d92d32b0966c231980347479e508102620. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QM6MZ1497609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e01120fd8a3f584ea8d5a1fd75ef6d1ca944b29aa4362448356ab38da32cc19. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QM6MZ1497610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf26bf39f0558b3a2d868495078ac88a452ff0eda1a2ac1c1b76f7975cf8f0e9. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:40:22Z), 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/QM6MZ1497611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x344bb995def4677112e8cf1338eb131b6effc76d25ddc3eec56e9dab34002ed8. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QM6MZ1497612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22965d398fa26b21888c26ea60e2e48de515c84157560a03a18d387d56473b20. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/QM6MZ1497613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb31b42f4225d12b40db209e6bc15b2a26024305f794f39f7ea39b71d1a918558. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/QM6MZ1497616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41dbb2502815305fe6cdb4f613c3a7f2bc9fe0949b9af069f1bf319e4b1d3597. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QM6MZ1497617.