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 0x7660e8c5537ad487f10da1563d0fc528273729f8fd0cf73b9fb5a0d6dd516cd5. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ad9dbe10-5958-44c9-9ab7-b70018956311.json and https://artists.proofprofile.net/proofs/artist/ad9dbe10-5958-44c9-9ab7-b70018956311.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 0x7943ec1a69b2e85dd1a12efb9f7e609b87895eedb9f3ab050760310e3b5558a3. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/QZTAZ2237133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe9ca6df76f5421f0c0f5e38327a438ebf158ac01840723b509442513826a0ad. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZTB92240042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x999e38369b5c207937aaeefda50af72ad0d1653aa36cd128cc6df783c9e99021. 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/QZDA42310146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75a3c8d207f18791ce5fb22e7b60ff700eaf58ffc0a0e7deec6dc84e425941be. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZK6H2367390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1b2eab8b351593858655b8e0004bae4842deb0e566af9c795c199f915414fc4. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZMER2314919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe19080a7abc70466cefed6965e8045117caca9c665f22db7fe42c51a5991b1e1. 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/QZNWU2324250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbd50bc0eb007454b96d16319b36a2be5cf2839007d89ca9aa1811c80d08eac7. 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/QZTAZ2301620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfce4cf33ab0fcba53e4d743e1f311e237e13708d8b5f9ba1558a7c0742683a31. 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/QZES72455717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cbd5691decac3c1bc37a0dde82278f289452e1fead92178cb97737a3bf867db. 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/QZHN92482369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbf05756f8bd3b2fd07502095f33ed657fcd118d9100fc5abd85b1a4ecd1249e. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/QZMEP2444684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c3125ace2dff30a0049f70db9d76c3dc64c5b7a5a2635d4739674a7b99f59e9. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZTB32465110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a5ae65ffa560f8998a225d7f55a0b9d0a1d4328d4989f52aa14bdf2f8df107b. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-16T00:04:30Z), 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/QZZ762496235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e4eb562d9fb4eb6303899b2694619441d0ff8f0ae2e676e97ed490b6d63f1db. 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/QZFZ62542982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e63ddcad5209a907244e2bca92db09928f03ba4ed27a11c756d077a3a21b3dc. 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/QZK6J2596172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6458b573d6973946337ded4d890cd59f2a9a76f409d32bc703914715238ecec. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:41:03Z), 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/QZNWR2520689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfe760d2ab2c5881f1dfb4c4e68dcdfd5898b9d9a71d952a2239cc113cded745. 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/QZPLS2578976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x792dfb118da61f54c2ae0fdf5d908f296ceff24c58987e9c24d004f6f60d2837. 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/QZWFK2559448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc4d8e67ea87f222acf261cc87429dbf0fa9b2f2624c229722958830a4b9e2aa. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QT3EX2589280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c751370181601dcef9e64d0571882df5a90ea06a1e3ece04facf89ba8c48b5a. 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/QT3EX2522881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfba666fb9c07891aad3f55d14ed67f55adaff65cd23d0fda2991e509849be9df. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QT6ED2574833.