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 0xce943e8493b35ce2cf082965ebd8d3fb281f79c9cfa993d419a381283f959321. 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/3b2bfb2a-017c-4983-a87e-f4e144f3eec5.json and https://artists.proofprofile.net/proofs/artist/3b2bfb2a-017c-4983-a87e-f4e144f3eec5.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 0xfe7630d563e4683cb4f0ab9927d03ff15a229aadca9784b2f6043c3f123e65c0. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T20:22:39Z), 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/QZK6M2211117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48bb9fe3d86fe7f31c543383d5c87866697a5dea2b52df8195e961830a028919. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T15:48:30Z), 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/QZK6M2211121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x693f840535e4b12c0cf760d1e0397f76191ff7ae629f67ff349e46a2e6b192e9. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/QZK6M2211124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19336df88b371e13260a72f3caffc5b94c2b10e6147a396fd1bea448f2f06eb4. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZK6M2211125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x474d32365500f53c797095dad4c016004e2748a15e5dd8cd88f951ebb5438f96. 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/QZK6L2298305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x418c696a444bf8af1cac22fbbe31ebaa6127b2c9c1f2a13964692559b1c7eee4. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/QZK6L2298308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62f996fc883802cf0111a16c3b5c0814a3abd6b1470f5b06999b752e40975e23. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T00:01:47Z), 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/QZK6L2298309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07173c2e47450fba7164ff42c86de9b1979189196744654183c8ee36cb4fd0ca. 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/QZK6L2298312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b54215ee5d589507ef79e4fe42d9d97a89de37e2bcd3eaf4703791f28bd7ecb. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:32:29Z), 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/QZK6L2298313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37a19b3c3030a40cb0a41ac683ae3ae41eab70a55fbfe95816c8f4049d472d7a. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/QZK6H2265835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eacbf115e95e70892ce65c7f903dfe4c4d4d8fe529b0a8cfa84dc80870173fb. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:37:14Z), 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/QZK6H2265836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94925ef4138d9ad99c9542869d7eedd5e190b83054fb642855606e5335beeeb3. 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/QZK6H2265837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb84829412af731f3c30dd5c364ab9e40c9faef18ce48bd4c553dd2b186e4432. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZK6H2265838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25f9b54118a0967ccda3f47fd7dd95b825db39aaf0a5191e374e8a99de8c837d. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/QZK6H2265842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54a5956d6fac67c469295c26651c8d95821d05a21e0b24210f2ef5b81fb03106. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:04:52Z), 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/QZMEN2264785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe115480686fa16f31e7e77af99f7409a2a24e2322d7e0a1fcd63a6e20ea24e56. 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/QZMEN2264786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3be430639d2e24170011373dccfa9c308feb5031199237738dbfcb8bcb0a87ea. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZMEN2264787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dbd5e0206158e0e4cdb875a77d74abaedb2dbe06f2b9d276c9f5e36732a41d7. 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/QZMEN2264789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9e0ce5fc32669f5df6b7ace26cbb8605cbb1b5c752ca8a63ff03c27e607dc5f. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZMEN2264792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7af00a801a2ff22b249db3fd00505fe3cc9a6a8406f4a5e9bf261de4f2748423. 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/QZMEN2264793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff62a141afa4fc42b858ffedb64a403a152a20095d65d20850d8a0d7b067d08e. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZNWV2217637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x209791154dceead7e6a073b11be132e468094757d5dcd4e56c0a7ffbfc71866e. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T17:58:04Z), 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/QZNWV2217638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x062ac5a61d23d2a22dde2ed0eea7ef96b2051f12cf4d9c212050c2299d8b8d8e. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:15:44Z), 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/QZNWV2217639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73218a1926705732b8c4a23f3b89fe450afdd897d5c23b29cfa01ac38041d062. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/QZNWV2217640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb48bfbe0d8014439871b77d0fbef6fea377f86aa8505617791856e79ee382b93. 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/QZNWY2248201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4672eb599e2a4c0a749b78d75115c31bfc62b9dfbad88b9bfaf359b404190330. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T18:21:36Z), 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/QZNWY2248203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ee99c6ff6a4db3cf9ce7c309808752080ac2ba45bc182e4b1e295582868f2b2. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/QZNWY2248204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54ebc547f887797abca94d1aefc602dd4cc290a9f461e3c5d68dfcaa35602d68. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QZNWY2248205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53f7f1835b04575b1ba774cd7145a5fa4859fb441164d1f852cd6a5dc6de4ed7. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZFYY2306378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc834f95451ebb6c4315dcd2134a2ab6bc4f6cfbebbacb45b67cf561165a06945. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T11:09:27Z), 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/QZDA62414708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x317a92a178cb06fcba66fa58739a28643b14743f799b00d8c2503e4886f43e22. 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/QZDA62414711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b33696c669593aa2bf177aa17737db956b824cab2e2d4df8c4a7e2e63d0b284. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T10:05:23Z), 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/QZDA62414712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88c376cf0908b70eefe059aed834a0ee9e839466fd34de78bb998d9f92f1dccc. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/QZDA62414713.