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 0x763712e82cc62728bd6b1c67a1a49cb1e498a078bea218a9307f9de40305afd7. 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/617efe5b-7314-4de8-b876-0f5be4430fe3.json and https://artists.proofprofile.net/proofs/artist/617efe5b-7314-4de8-b876-0f5be4430fe3.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 0x926f10fe85d0ffcb4002efbaf09b2c244338c559f86f9fd94593b839f538a57d. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZES62464095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0adf06f48106389b007db9efcd03c79bd568ad6626f148b4bd58f41b545de899. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZES62464096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd74564721f88b71f939c055e3e3db9698f2bc54d771ce25839bbf25240406f61. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZES62464097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f979311d573b8f69d6a3bac9756c1b0e81bc1ed7a324f82362825b51e2fd9c2. 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/QZES62464098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe91f8f67b99d74a812ecd60848ae7f8d433895ddb8a6d1161f7e38d2666a841b. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZES62464099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe35fe1d92b819dde1e8de72d552769c51f2b1fd0dd36ca9305dd1de2a37af537. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZES62464100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f466c20e3d1941a6bbc7f9b8f73c6be9e4e303b0345eb38b0faf691c94c209b. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZES62464101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfffe84cd0e64ac453946552fff54069020537112ebd46c5ac881da95696ae987. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZES62464102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x558496847f19f4681cf7e519a67d8ba914553d7f2ad9a2f218096955e87b0a36. 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/QZES62464103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc34a169492f3ad696323f51a9ba75408fe4f7e42b886bb5862f7b557a0e02ad. 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/QZES62464104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccf80a25a7be594f54e4a65d5e15645d4b49a8371cdd521a048b333c8a14b39b. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZES62464105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9562226e18ed543ae8318718172b280f6e61f3e1048e8ad8d7bd5844c6618ad. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZES62464106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e8724593b90e417c02a2593171ea0b023f781b51d647393f923d9427d7f8d26. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZES62464107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x761571bec02c887c09f0d09097b0a17d75eca95a5aa56268a0c54022bbd237ae. 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/QZHN72291215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b3842e33d9f88158adae710be0d6e81cf427cf895b43abd8bc5c689495ce542. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZHN72291216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a4c8a5065398e878322ee5e745caf57fdd9d7e01a0964dd96dfdd50054352dc. 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/QZHN72291217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47ff29887204a32b17255a47352b488a07c247ccd5059caec9875b8ffa404711. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZHN72291218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c3c0efbeb3f934b2e84317e7295e6a2f6d87338cb9ad095f198ce5fe1411afa. 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/QZHN72291219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7c026a79b383fc710b7ee2d61c0088f2b117f771c11e330c9908f8c66b95fda. 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/QZHN72291220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d2dfb4dc5415ff30c904ba4d6493964298e3bd82e9413bfabb952f54b60d675. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZHN72291221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc99ec19719c48aafec34032cc81b95ebf2278ec8302e3c7bb572a3d91eee3a51. 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/QZHN72291222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15e5c4b0cf5e35ffb165fed602a716a4450277130513563fc7c1cdbb62922087. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZHN72291223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e45183249ce7f85a4550c7fe9552dbb23dc8d693cf132e2d1d1362bbb83ab1d. 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/QZHN72291224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7771c5f1b7b481d2a870111ad6d77016982b4783d50c4a3c50817280e347c34. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZHN72291225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bcfa36f6c1df2f1d361855bc700b89663f5065ab89e4a6d7e428c17f665c660. 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/QZHN72291226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41425383a912097a64a16cb2bff65672340a71406d3318ab300084031dca76a2. 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/QZHN72291227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9153b7e111b891149197dce5e47d7ee8e16eedfd60daf0f6ad8b97185dcc5829. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZHN72291228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9336b9651fa5f0281c69ca50e7a99ca89976409dfc77b92f59a99567c7388123. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZHN72291229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f949dbcd792235863688675c5dc35bfb9d0997fbbffd50e01c24fdbac1ae07d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZHN72291230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc26f16dc1322e56543a7d9d212aa18932cfe5170135b1a1da44c7ae3cbb31c1. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZHN72291231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3741db699f27445b9055fea7736051b26710fadc5209c527699d4afe19a277e4. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZHN72291232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3e29b16e1b15c78c41a528351dd59ff4a723700df6a6e05640be89a3663891c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZHN72291233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3fc50203b078fffae12e443366d6181e4167fe9f88c34b69df280c91f85aed7. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZHN72291234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc040ff9f4d8b038025f07c0f0a2d4c26d650fbc0ba1887575d3cd64597892a75. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZHN72291235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48aa68ef049eef623df397fcf18fae124203192736ff6a3952be487b8f99005b. 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/QZWFH2317795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6408bc23957d47d122eb0c75e08156ea26f2f74e68ddac0b11463c2f4c52d6e7. 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/QZWFG2302239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86286e827ffd8386175d12fedc51dfafc0adcd953ec551cd88bb45f1cddaa8bf. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/QZTB42398552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cbbb65b9defdf786b4eb99e84d6b7fe90a64072d44cb45e396d65ca6000360d. 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/QZTB32315775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c73eddfd75fc6d901fb250ce789f6b8770237a25fa0ea23789ff3a29523cca5. 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/QZTB32315773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38428de6c92e8e226f55315e3745e19643b6b8ae3004375c9dfbbd5a9b4e3ced. 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/QZTB42398553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa745a12d3e8769d44d0547c02a03146d4dbdcbf249db97265e208ecaec73ab5d. 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/QZTAY2399002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e624b03df7644ed1d7a8c16760c993e845b797bb681c27cb20720149d0e09c7. 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/QZNWX2342096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcdcd01613be5e64674a2a9b4da02c39b0c1d313a91ef5387421dfc9451a4de7. 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/QZNWS2321328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96216023a1c1305c610f1cc8865ecf12408abd5ee9af9a0f3e9615f36e29a899. 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/QZNWS2321329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d23a9d624268dc86ff5cecf1471b3ab32ee8cfa5cbc0c41c6321f64c1e81bff. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZNWS2321330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47e9e389de607fdc28e75b150a704f916a862445e8511b3b9ad38f6a9a7f6fae. 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/QZNWS2321331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91315044d2855e9c4c3d28106fcdc20d678ed19680bf9be8c954ad2e8ac930e9. 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/QZNWS2321332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5cc7047fd9165ae6dc9e1d918fde4fcbe0ba64b36564478312d8c596a836f94. 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/QZK6M2357613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c52b7d2577c33261990fddf1daa34ea34dc2dba225a69cb74dbcadb032ae546. 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/QZFZ32365064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70add4f8a1da23e2b55ef586230469f0543417fa669c164c10bfd9a7cb99f19a. 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/QZTAZ2239993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34bbc18f207673d9694fbbbc4b67fd6acd40546e2b926dbe1e7ce1653203b1fd. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZTAZ2208290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1e7b17c8bccfa88ceb99dda7c53fa04cc188673731e82a212d51447856d385b. 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/QZTAZ2208291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf24f4d2f923cceabf8843b223d3a61568a8af26df3c2188c011fa54ac101383. 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/QZTAZ2208292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04bb859ec6e814fc1833830ceeb88d237f4e5ae9ea77563bd06b409ab5103537. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZTAZ2208293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f141171955573f91d0b10a2954c3e85df24e2e772cc0c8306092f856c1d6a87. 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/QZTAZ2208294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fb64516024cb148fd78490e77731edecfec5236cde0790c360d4b7b0a83c37d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZTAW2293955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f3560144533507ff9a9d9460a6dab220f60cdbc46bfc1e2007e6ed8b6497431. 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/QZTAT2273194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b7be0e7ebe5ddbcd28d14dda0d10a7d95edd1bebe9f691348b7d952296632d7. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZRP42255660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10ffd02ee54ae5fcdd9018b7c35a5104a8fa8dc1558aba1067e2b94c2dbe4fac. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZNWQ2295727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc741326a1f332d9fc629abf031b3d260c68237ee62d1487ab3ce565828f0d6fe. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZNWQ2295394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd052005bc284d6c417e75e0f1a1b90ba81be53146545dcf3c050754b717d13ac. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZK6L2172034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f1b42e9fbe24f8e550890810421b7f79f02bd0df548c480bd93f671e3288a0d. 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/QZPLS2305976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b8258ac4d99dc9e4e233ece9778fddc01e460202709b93efd5c42352b6bf52a. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZDA82338909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf86e69cdde3c9084c9d0704ba0ce1c3245607c338915b246cde113c18c3be804. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZDA82338910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa224d6cc29883a7755721ebd3000f5dc2b28aea57ae1866c23601c874e32fff4. 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/QZDA82338911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7416101b736ae358dbc133a35c7dcc15a1ee63fb0faf575dc9962192af955eb1. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/QZDA82338914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x617067a59bb2e04d9a233f82fed3be18c8071c1dc1241820a6cfa78d776f49aa. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZDA82338915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96bbb961ee02ce23fb774fba36fe6c7263831b37c98c6d6a0f74f134bf6464b6. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZDA82338916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07e533103d0715f63f37f3e995648b5466eee2039c7ebc7e5a06a439336f2b8a. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZRP52275945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5fca2822f5e8c5aa1cd8c84362c429c2fae9ca49c54b3bcac23cc5a9768d504. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZDA82338912.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6ba4ae24df44a5ae5d0a21c5331bd640dd678aa7e01b927f08b50fc162b1137. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/QZDA82338913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf12b4ff00213cb44d2047f011df4127389dcf58df3e63a86daaed9dbf87b8d0c. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/QZDA82338917.