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 0xb6ef865312a8d462a74eb756e426536d8434395aa03a4a660ec8e39c9eee66c3. Chain 2 (Bitcoin): anchored in block 953909 (2026-06-16T07:53:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/05d3146e-46aa-4b17-8445-5f4daa974bf4.json and https://artists.proofprofile.net/proofs/artist/05d3146e-46aa-4b17-8445-5f4daa974bf4.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 0xfa8b205ed16face877edc35abc7839628d6e7a9bffe35c83baef2687c3b79746. 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/QT3FB2506852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76500f7cd9c7a3a7b45258cf0c9e368bdaaaeb3d9ff64b4ad90b0126752f98d9. 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/QT3FB2506865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c72025458c6c017b0137bfb5279ca6de4ded79aa23cafc08381e28623bdb885. 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/QT3FC2509954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9628ae20b78277064e509092e93d138b5624f61d6289605da4b8ca2ca7939af. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:37:41Z), 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/QT3FC2552759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x391abe00488c3ddec0fb09e11b78e21d87f98f40c0ec15d206508fe0bf073ee3. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QT3FC2572756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99e3be8c0caad8b46e7d5e8655b28b4a2a632cd4236d9f4ba011a3d335ec01c1. 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/QT3FE2549531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa56c59560abb9cf248389af009b59aedfd9bb8c493ec9cb8bf12d781d02fb03. 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/QT3FE2549529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2747054e34c1e6c65bfbce75e8803712ffaeb016fb3c2bb596fc336038c3724. 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/QT3FE2547430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7762e6264506d47f81c14b1a29686ba277b2e87eb8f394ea6064ec15dd587df9. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T23:07:31Z), 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/QT3FF2562254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23c0d2d22c195c77111be5e754fd7bc47a2e5d03b01b06cda010403dbcd70e6e. 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/QT3FF2558949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8545da99f3f26111d90aa801fff3d0841037bbbb07a05685a2382ac54aaee7a. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T10:41:58Z), 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/QT3FF2562251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9cbc59557381aac113549c8c9f1497e25760a7be958b02fea560a3fb3b023ba. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:48:37Z), 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/QT3FH2580552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe9c2f6a08d3f78eb406f228b1aec0b853b8e874d7a13740a449fd3eab1d4f0c. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:06:32Z), 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/QT6E52592945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04c0cda0ce2774be1cab34dc4a978c24b11fbf5a7b3bfb0797a8e9e9defca7db. 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/QT6E72523762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c6a497921e05f3c0ab40e63f769602a2a87dc2fe24d94a593b3d3b7f962a177. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QT6E72521343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x666147720f534a1584a9aa99606c1f322d5a51a1bcf71d2c392ceb3b99c2ff29. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QT6E92595166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e3814da241b33a17197a141e43e06a5b62fcf5c394a0b72817654d9143947ee. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:04:26Z), 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/QT6E92597213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b4ffa3712e62a5bca29b3199ac5239fbe586f2f14cc89e379e5d12aae99b438. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T22:04:38Z), 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/QT6EA2591909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x746a9629c795b81bfa2007178cb3919fa7b35ea5bf384a3c8016c780c09a39bb. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QT6ED2574716.