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 0x39fc4fc6830d03edc59507a3af6913134b0fa925ebd26e5e3df197213036efb8. 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/f93616d4-c937-4f6d-bd45-67bf57019be6.json and https://artists.proofprofile.net/proofs/artist/f93616d4-c937-4f6d-bd45-67bf57019be6.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 0xe78a65a02bfff831fc6b458dfca9e52857e126cf08d902ba67e4963d9269604b. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/FR59R1722231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3812fdce372a687931ecfb9245fd4dcefa30ead9d358e1820caa07028765cef0. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/FRX761596754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8335b91a2c0831a22fdec1039adc64026d94d6417ffffcaf0ad330b297df56fe. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T11:02:52Z), 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/FRX761596758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98efdb14e6ec1e6fda2a67c0bbafde8dd305ebda400158a217f931e40c4a01cc. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FRX761596751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x421b41d3dc1fbb332ac2f814bbdbff05bab965dfbe75ceb78634f021d4372db5. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/ESA011907412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cec217a8b7d5aacaae276e57552ff433c14ef914ebc7e1c5c1f7d7bc3df2898. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T21:47:31Z), 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/FR96X1727175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f413d6bf9f6f5de079705654a519f5873d0976e7c476ae1dc66a864158a34a1. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/FR96X1727176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a2578daca9e7139ff331796fa0f86847177674623551b35d55b27f537407434. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T03:33:22Z), 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/FR10S1954817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bfd561f1273e1745b67e5d61eec113ee6cfb4dbbd082b1ae9a57fd0c13e73d3. 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/TCAHG2397159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d3252043a9f3b13c4fa00d596d321479dbb3c5ce6e7b8045dd13a03989eddd3. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:48:27Z), 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/TCAHP2334287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fe212d033db9374a52707bad9c6404ad8cda9fc96d552f507cb9e5919af4696. 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/ESA092403553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aa7356a7c7832e52b8c49ee9290e160901d4de9b1bfc8e2400f6cde622cdc08. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/TCAII2448596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc0671bab98ab086e9c3e1379cf833335f79fcca3de2d9d36e59667d0554397e. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/MAA172400235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eede9626d00a24daab1ce0bc788b41da2d51c43e9fbaed6687ab2041a5590c2. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QMDA62407491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd52ac02e3faceaf66d776f85c5774e2e66d1339e0c81678461c8c30efa1d987c. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QMDA72431518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cf38244556e8e0564e03a1e3ac53e14147ecbd67cd23bacc9b1a9138d34d617. Chain 2 (Bitcoin): anchored in block 957633 (2026-07-12T00:19:47Z), 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/QMDA72431520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f8c140d928ba3914e912001013abcbd6e88516211ff44218e4757a825710fb7. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:44:14Z), 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/ESA092415004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x051c3cd4c505334275e113055c28e972694cbc60404d7173a30315d8dc853cc8. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:50:36Z), 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/ESA092510813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2462d20e3b59cf6b00eea6e1e1ece87ed7b7916a35c33cb0e9ef625d43065a3. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/FRIDO2512515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcd94ba2d11668250e3d6d8b5d05ebdaa6f42a78574588f8f1e7bf8f21405868. 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/ESA092511296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26881e8fc7831ad80bb4e1a30fc60c702ed2a28780dcbe45e7d04f0cfc439c64. 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/MAA172500628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9175393f827f540be973821f503a4fc39e3fa388fa8830491735c4f31dc2ce19. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T10:03:54Z), 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/QMDA72547719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67f423bf6ce1255b29c485cc73007db858e0836db937826960b17b2cbe8ec958. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/QMDA72547720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7517c68ac77bf3206ec1e0aed94909a0bb03abcbeac58c9c9e687fc5ac4ee4d. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/QMDA72547721.