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 0x43b90441d3e114d57cb6e93c4196888f199fe4e4fe376285b051cb7625edc5c1. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dcd60e04-4a43-4934-84e7-3d96b2f6c154.json and https://artists.proofprofile.net/proofs/artist/dcd60e04-4a43-4934-84e7-3d96b2f6c154.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 0xf2d7b84d461b59a76bd5c05a9aa8283903af249fc0ba94cf537718f61c11076c. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/USY242429150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa92a0ea27487b15dbef4a444d8c636aff8ec10522bfaadcb5214eab775fd8410. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USY242429151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x747a1bca5c7d2e3ebba0c37abd3396a07486e5ca17ea765920dacf34404f0ef3. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T20:07:33Z), 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/USY242429152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f5f6b91f8ca1e0be53a6ba0ffd6b80ad49774deac3563db4761f56f4f4116cf. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T09:48:21Z), 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/USY242429153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92cabf29bef86420083286e5bf3a7e6c657887c8dae6eb8e0d6a30576f8da733. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:03:19Z), 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/USY242429154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3464d3610ec164409aeb46f6b49430e0a344bd61f3259bfd887bee92ab714e07. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/USY242429155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcf2d6d6f0c3b84b36e5fdc2344f0dfc1279116fe33b1c999914ce3791c95e66. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/USY242429156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16c8a9d21172cb9fc97db4901ee5416938d70ee5e27d02fc323b2146dbae1226. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T11:01:03Z), 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/USY242429157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dc90911e3172a1f45605de79d5a3cf54ff31320fad8cb2d5d37d7287534e39c. 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/USY242429158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14852db5d793dc26002edfdb1199d2f90104eb99768c461c54644037cf7859db. Chain 2 (Bitcoin): anchored in block 958863 (2026-07-20T13:01:31Z), 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/USY242429159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdef25db6992c11cde55d6867cd9586c914618f6ab40f42381d825fdc8c3ad097. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/USY242429160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d40650f57610d2d6546616ae1d12e818078db673e6ffeaa2ba8d98c04431fb4. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/USY242429161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0515b1d79a95f5873a4a07b2d1cc322f7c334e2cbed64b551da7721b5e382684. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T16:20:14Z), 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/USY242429162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71a3af59c4f901f8a270ba5e8a0e66043c39ffe441b9350607eb18fb88b08119. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T08:08:06Z), 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/USY242429163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca4c7ad9a09630cce5e50d187cbdbff638a6378c6011296befa4f82f85f5bed6. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/USY242429164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36fa184dbc73775e0aea0b42844719bca081b9fa341018ea4ccec7a6bd69136e. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:29:33Z), 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/USY242429165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28fe2e75036e57850bb268dbd6820ea1d9c78ef6218b24ba1716ae0534d9ad3e. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T07:48:27Z), 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/USY242429166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe63edfae58571e6977ea925c106bbf8921b0306c804b399e6070c32c57d19dd4. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T20:07:18Z), 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/USY242429167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x981a9c0f3a52438fade8fcb60224ebc48c62ee63b7e0fa66f054476e41276aae. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/USY242429168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x739702085d1ea27a0e09e115920bd6ec1c3f44456e3dba9c3e3a47dbef416348. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/USY242429169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27680a8eb28025ca0e14fee08afd711a768e1df55d8a76df91a3befa2d7a84d6. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/USY242429170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f117a23cab40777fa75b01431c2f1fd86a4ef58820bcd2675ccf5c2692a10cc. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/USY242429171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8691a91fd390cd057897f901ee83ca187202f5503953bc16b456b0a091615bad. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:27:27Z), 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/USY242429172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3218bca8098f5657e2c1ab37ab60a1bbbcff9a3f39db52691236caa17dfa27f0. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:47:51Z), 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/USY242429173.