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 0x6d2aa6bc9516cf81e0d16981c99ed8ecaca266163ca16425d3bae5a2ffabddb7. 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/f0ce89d3-c934-4eab-8d84-cbf5e1339728.json and https://artists.proofprofile.net/proofs/artist/f0ce89d3-c934-4eab-8d84-cbf5e1339728.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 0xad33c826c23501b39e59a1faa0173beb10b180b18710fa10d1d2bb4d53272942. 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/QZWV32449950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44c3432f72d4b57fe99d8904656735d7116b7b0f8b08ff9702d5afdb5495228f. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZWV32450105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb331ce3386a7cfca20244536ffd1ece648f69f16ab62e3097b40fa90c405692f. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/QZZ8A2444861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e54ab140be78d17f50a3c0a60e6f8aa3368c177020000ed00057a4db2db52dd. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/QZZ8A2444863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6635c1ce71063a40801a7bb26ee9c845c98449d00720be276885a19a65a2d721. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/QZZ8A2444864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b68a1e4c0380655ee73ce98fcfdb46f0978fb356c300a0b72ec8115b43e1d08. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QZZ8A2444865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72bf821c15d9e9442f06579e186091ee3d274f9f5982c810ec99b6bd901444a9. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/QZZ8A2444867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24a737cbdf1f0b468f8657bcaf774a3cbba6b1635607e87793346277ea2ff6d1. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/QZZ8A2444869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03e9321ebf90f6306c5b23fe2cdfc2ac3c2753c55f5f88cb4bc11b6d0d0b4959. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZZ8A2444870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0e66a19c3bd4be1bca4fdbac3cb5298d895fcaf266a3ec1fb508ec1e35c163b. 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/QZZ8A2444873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0969051e7fff047ead6b853a1dc1717739b5ac7d965d842a80d3e7c28443caa. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZZ8A2444874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe39f721dd3220ca3781ac95b706ccc44aa15681091b4a21d5568f37346a1ee50. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T10:50:03Z), 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/QZZ8A2444876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e64faa44f1d1c0689a0288df4937f5f8300fea23683c6e6b919f486e2b5d1be. 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/QZZ8A2444878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x918292c5504659e415d55b7e13735b20e1caebf2e8ba6a5828c06c905ec61b8b. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZZ8A2444879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4e0e0de8b2c43026deb5b9ca6aab9b905ae8e1a9ed3d53e7bc281f9a89a303b. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZZ8A2444880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb7ef7ad554d920130abda8b161448457dacd5c6b7c37a4a703e256b53af95d9. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/QZZEB2486294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77f0304210c6b916605d0ef52729c46c2707d6e23a08bac4c6735c3607337de7. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZZEB2486295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4687f67a9c024206089908712ade1ad91d2635fd0255b2fda71b3f9348f4f5e5. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/QZZEB2486296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10099cbf68ac8154c83c549e420b0c411a4291981d81a15323b039aaaaae25ad. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/QZZEB2486297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd532d48c5913331a1742ca5bb4a07108d2c1c8910280b0d278ad5affe21dcd41. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T10:09:06Z), 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/QZZEB2486304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcca7d049999cb1c150fa54b04a78c0797d37597e5d8b2bab02d8bfaaf240acbd. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/DEPI82456732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa103e34174bbcb570aa6c642d4372e8e56a9313496b816f12a6ccedc7a4c9955. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/DEPI82457333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71540b1ceb052cd77c63eebed322f10ca276252bd901ea2cd277307958dcdb03. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/DEPI82457700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc57f8aeb17b7fd095a13018063fc1e2960da09be4105693b133370d9868809bd. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/DEPI82457699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf3687bb3d14cb35811b7910bef2d3ff39c7d4b5d71a0f0fe88afa8ae8671aa3. 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/DEPI82457698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd651684c6fd10997e41439219a37a56420bdcda2dc7c50855f2e867505a07f7. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:53:57Z), 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/DEPI82457702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb679988e7feb3fd955ede0584e67f3eb03e2046915552fa156a3b58cc55548ee. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T11:30:14Z), 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/DEPI82457701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80707cd90b9ac9b0f9d88c7c64ca550f7d46b394ec13bdef7a95819ad0433dde. 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/DEPI82457704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3006fff51e85869b2619ca5ebbfd635a90e4b8c38fbc8ada0939977d853b8b0b. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T05:28:43Z), 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/DEPI82457703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f823549ea9427c4f9672613b3f2ece3419497bbef93bfe4aa0d435b61f40dc5. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:53:51Z), 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/DEPI82457707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4843d7d3f6ef13df866dfbb1cc87d58ec088444b0ba85f8c026ca2706c80f16. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T01:46:42Z), 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/DEPI82457706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0036b8d283a85458cb6fd3e666e27010f85df103d26d476fa76177f0d1855aa. 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/DEPI82457705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x489b0f013efde866b6d6210b3a5199244cd1248a0eebac469f9bc9d02269d170. 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/DEPI82457708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb08a789d9cd904f2a0c1f8e8f1eba37f82b121ef81c09cbeb84b4838ca907d8f. 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/DEPI82457709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d9cf9c205bd9c89e401a510b3e38b42d3caa55b7dbbc266a396402faec26fba. 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/QZTV32547071.