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 0x8935c638a000e4a6c14fc4911ce3f0370371fa510cf0bc0d4323f7a46fcfe020. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e759916f-61e5-479c-a566-d7bfa4dfb632.json and https://artists.proofprofile.net/proofs/artist/e759916f-61e5-479c-a566-d7bfa4dfb632.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 0xb891f1ec8e44788519140206cb7bb07aef6915a2ff953f4000afd38a2bce5f33. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:18:32Z), 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/QZZ432369206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3727bd553e10efd7fb430fe3629a090ed10d293f2d3522cf4e28d3ea4f67e9e. 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/QZZ432376606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7cf7b0b065b288d9ebcbae8ab2bfa90614dddd221f0c79acb8c0790ea27c542. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:28:35Z), 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/QZZ432376613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a9689e63b041b33ce7147ed1a8eaa61dad31497f6a5befb8557062151a099cd. 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/QZZ432380379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x401e47ffc47536536847dd0c71e7f14267696ff173fd51fee5264ee7220995f0. 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/QZZ432385513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43bb84e52c1087ff1f90d8cd389134975029414118b52ed97d38a4367c777987. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZZ432388388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x059548b21b5652938b6db8b10127b31c9b5de114d4facc5479cb050e022b46b6. 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/QZZ432391403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fac0c5c6c40d9a0c400d87dcfef525272198611d224c95f387feb3852b0ba9e. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QZZ432393543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95d2292154f2635fddb72027bbb6bcccee2ed637dfbbc20bb49bd0e131589036. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QZZ432397319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4178bc49242e7a5690c42bc683c79739beab32cbba83ba4ffd775f1e5985748. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/QZZ432398489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81092642a67a92d35c4db94a82b567d81c81d7eb01a7b1f1befdb33e817b710b. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:36:26Z), 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/QZZ432402901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc552fdc4b44adf27c2792301e5aa69324ae2bde91078e843de3a16aef9e1041. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QZZ432405793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67c0117b7117c1eb11733fbda21be219f9c7d9689eee6ff8ac51af7f0fba2873. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/QZZ432407630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b78dcc8c05c1fb0e5152e5061d9034f286f2f6cac71f10fece96f224a1a391e. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QMDA72514497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3b044c7de8e052f4eb199b98df52ad4e84d725340ca40d68170bf5a9327dac0. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/QMFME2550958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x876741c09e5b740980ef4a127edf2e1353ca66ec06fbb19bf6c3d67bc3dc6f3c. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/INE182580232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbe13a467a8616730ebf7237651d80a9bd7074b1155fa5936197e9026a6ed0aa. 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/INE182580240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d6312dd9c3694013059ef0adcb506d83f55c26e8a90a590e13c71ce287ae11a. 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/INE182580296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb98a4241db40a4fb65276e2482df88ff0502f44169fab7fc604c667fe9e5b1be. 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/INE182580303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa548886af3e89aedc73f026e3b1a4a34416f227bce6603b8b4f5bbfcddea7258. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/INE182580564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44d188b1ca32ab28300a8abc7f34134f2319684df24db5cdf6f7129f17cab196. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/INE182580585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19f834b9eaa7eb515ec22cc58cfe27df51edb11f4d52b0da875d64c2873db690. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:45:23Z), 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/QMFME2535793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c32f7ed369dfc9fcabc8cb20b4d69c05bb7a534f70c83eb6a6f51df1a5fd9cc. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T10:52:19Z), 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/INB942516038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x429f58fa10e687aea61ad3877b367dc0d1aebec01c21454e201b3fb98a3c3229. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:06:41Z), 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/QMFME2523667.