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 0x23b2af9f28c45d0f27d8283d550cf70a4eb7519189e78b955632a7dfe35ef805. 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/52b73da7-5355-42e8-a976-d932943cc5de.json and https://artists.proofprofile.net/proofs/artist/52b73da7-5355-42e8-a976-d932943cc5de.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 0x0c6c935b796846ec91e23185d4032ca1e7a21deba6787cd0f1a95af7697659d6. 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/QMDA72367250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x971b27ac236af3be0ec6aa3b11addc7a8207e6c70ac0200a1f14984b37930a90. 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/QM4TX2378949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4450881fce1ba18d5e6db9262d7dd89a7c0575b02c186eeeb7a6f0aa968a8841. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QM4TX2378951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fce85caf70a3ccaa5986eb2eed00a3986a0a04d8a9ece5e442cbfe1efa124c8. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QM4TX2378952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7999faf19dcef9f4c789cbed8d2a24c71dc49f041f182b9e11f4ca10e5f12acc. 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/QMDA62299961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa63a16d2ba09b5fcbdf85ad2dc879f0fe9e1b4a9d0307dcb5eae2d9dc4f32779. 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/QM4TX2378954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3111ca25870aa5a10897e2bb06797ef7e22bb4503fa1a6930640a45b97cb3c63. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QMBZ92350734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x971b27ac236af3be0ec6aa3b11addc7a8207e6c70ac0200a1f14984b37930a90. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QM4TX2378949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66a008ca37dbcb6849f8c821e82213c317fa6f059cd0fc8aeee95272d85a15b5. 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/QM4TW2321348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46505d4d4d6f9797ecd3d148c6179145795012b2eb42cfc21d8c8b2a3b7c2e0f. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QMFME2212416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7999faf19dcef9f4c789cbed8d2a24c71dc49f041f182b9e11f4ca10e5f12acc. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QMDA62299961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1683949cfd32baa92121bcd58fe234e89ffb42bfc3f7e7fc368cfb02b23b3c51. 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/QZK6G2247798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5140ccf3ecb6df125eab2ed74859bbf3b96921c3e554b860471c5f91489d8d3. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QM4TW2433672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf785bb2647acf23a0e7f978ff5132901f05887a334d49649037f079020195569. 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/QM6MZ2415643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1c0adcb1a7494cf3732f799dfd7e16a6796ad19f8c8d87aa961cd471f34cf5a. 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/QM6MZ2415641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69a005d616769af8efe5e322464400e6001d030654b79db498472410b6f4c48c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM6MZ2415645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f2e301bc1dc3e2160fe3b812f7bfc385adb0d6c8c79d323b4c455d7bb93e267. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QM6MZ2415640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa038a073011bf3aa53976a30120050e275ac17406e76f73c12cab8da8b6dd154. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QM6MZ2415639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f4e1fc7febd5fa7248392e6c23275e2a8c1170b6c4189e6c386f539f76128bf. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QM6MZ2415642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5140ccf3ecb6df125eab2ed74859bbf3b96921c3e554b860471c5f91489d8d3. 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/QM4TW2433672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36d7d6cd350f6da5e0bba8e0afff388125f0d5c777b795f546eb9537a3df9efc. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QMBZ92495558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x609c52119e5d67b29371c31e41625e38c97bbf8293a1270c6d346824de49b6df. 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/QZ2J21502485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc41f3beec065af32543ad8d4d996f2a8e06ee77f9aa94f72e1c4f1f1be684fd3. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZ2J21502488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0a93b09d7c8a90faff4286711556a5a2eb349181aa1758ffe36aa65dcdf047e. 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/QZ2J21502491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00f3f78d4cfbcbe078e30bc8dbeb21644b8bb67f3dc61f99fc846ed7cf68fa5d. 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/QZ2J21502492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a7a268497f0b771ea5f20d95e55d1f8d709411ee1a5e07d33b25483f679ce53. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QMFME2399882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb87ec6835ba808e5ecdc67f2449aa4fd302afea449b5c1c27e04bebcbb661142. 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/QMFME2399886.