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 0xd18580fecec9c7989094cb7ebebeb222a80edfa808505faa29a18b85ff1f2a1c. Chain 2 (Bitcoin): anchored in block 953750 (2026-06-15T06:12:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/abffe942-22f2-4f68-a9c6-4446a59b2f50.json and https://artists.proofprofile.net/proofs/artist/abffe942-22f2-4f68-a9c6-4446a59b2f50.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 0x266b1e90e6c3b448d5ea4ef64cb6e02e685448ac12868b6c1ad0fda210d35617. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ZAY361600454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a275191e45c6085274b0c94bbae9b403d2a1223e2ed0bcfae5ca4793daefaa2. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ZAY361600382.
Amazulu - Durban's Finest vs Gukwa Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9e608ab6b618d44e66e017a3b7849426ec837391fa4866211a5bbc903a987b5. 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/ZAB7A1600067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bdcded4b21255777dcd764712ac2826fb41cc72bf0440740eb5eecbaecf357f. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ZAY361600383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x650399e309b0bb66a3b7e8546332719f1c218d4a59a2abb502f0ef0cee097c50. 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/ZAY361600384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7efb862e9757209ac3cc2d8b710e347242461ab8255db339993d87a176d06c48. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ZA29K1601100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd490d2bc914d802e6b1e98e656daa7a1dd137ae47429fab46aa0c48d3bfccada. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ZAY361600386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6e8c4de2763adf76c38ed99777238556531444135d6cf5b3ee59e2619e0cde8. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ZAY361600398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbcd171476c3e8fbd57a290619c916d0ea234241a2c505410dea136ed4f8bb25. 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/ZAY361600376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb9a713cf6030bd254f07e2e52cb91eace854883a92fa926c74e59cf0a747667. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ZAY361600387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd09dc39982867588ce7aa7ed6dc8992e400fd9842dd126887b71f250daaaea6c. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/ZAY361600401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1fb984adb536ffe952496f76cf820a6506071ab9162fb85ad28c8afa45fe9c5. 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/ZAY361600388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5086ad1f6a6fba8a3e8a7f65705e062eee1d4d156bb386dcce670179e8fccd99. 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/ZAY361600402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7310d57dd4eff47e75325c9014b5a6f996462abb8388da6863783eeacd1c4eda. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ZAY361600456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87847dfd48af6cd43272bfd2af7bcefca6830f6723440f7930983ae3454cfc13. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ZAY361600391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce603faf5c3fc9baaab5036569631e43758d8e71b47089d0d115756a8725172f. 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/ZAC011303424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5379068f250a33d488d8cef69c999be3a922956bd3a447f0433cca9d92236fc6. 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/ZAC011303425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x508aeab4fe349ce6e1419d4523a791f5a2be14bc6f9ae94534f53e49f99287fe. 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/ZAC011303426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9035d419c6858cd7061d1e998d242b53ee9c5fb94bca7473fad72c33d1f96619. 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/ZAC011303427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43f6c86a64f2c043a017ffd2b1a6db7ae8928a89dfac21ac146bdd5108a0c6d7. 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/ZAC011303428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08329f991753cf230bf4619646016525617423c5122d1b796ff196640eef9e3e. 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/ZAC011303429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72d7dc80a29794cada7a06695b9f5c8de2bb050b74ac71d1fa396409dbc6c086. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ZAC011303430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe25ccef30d5634f55aab8623a51139953c71c29611a8b15f6dd7d98166dd18d2. 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/ZAC011303431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa757739ba19ec56b31d5164281712051ba81bd5972c0e664442b23f2880a176c. 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/ZAC011303432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb150135ce066ed41b8b26b121fe8972844b3a5f37b81955fbe2875fdaa5f0a9. 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/ZAC011303433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa97cdaec6a5ba9c5fbf1f7f2b88620262e16813b8080455b1a15bec953738f9f. 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/ZAC011303434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75bf3ec78525e0b294dd7cc69edb79884cb6d1da924e57cdd7f2ed017b53831a. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/ZAC011303435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x322a67f25bfe4dca548ae2e48bbb6a691366ad5c0816b6139a9f500839903e98. 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/ZAC011303436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83f743a963c70c9219468456e2175e9567ba80ddd80bc1db042ba003e6eef10a. 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/ZAC011303437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc999509ee24fc4ef32eca99900b4ee3781a30b7ca78c3318666be4e2367aee00. 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/ZAC011303438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x217f26f65898dfd612b00f0c2c1ece70a57e3d5d9057a9c7b2e81f9e66862694. 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/ZAC011303439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd728822b38cf37f6f52f866fdedd9d61e6eaf8812770bd634b5064184ccf3760. 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/ZAUM72300960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74b15abefe83ec4b4ca7d767c384a7e8b82d00c18a8f5fab030cb2f82515ae9a. 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/ZAUM72300961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1f9f6e739610e82c1a8ab1e95839de743f87c9e1b15625febc0a87ac2d90d59. 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/ZAUM72300963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18d04990cccc99fb36c8da95479c5dcc1136fc1380a2ddc4c76c905dbea0979c. 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/ZAUM72300964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46a64e454b4b3ceb32acef605cd5064e158c16aa48aadcef32ebcc5358ce62db. 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/ZAUM72300965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ffc9682e4f7e9c91c777512cd8ff4cf8277bdcbf75c25ec9be286692d49e2f7. 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/ZAUM72300966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e4f366a3585efa2047c3d89f963e1c82f3e5143ffc15052ef764f36724ce313. 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/ZAUM72300865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbcd171476c3e8fbd57a290619c916d0ea234241a2c505410dea136ed4f8bb25. 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/ZAY361600376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ffc9682e4f7e9c91c777512cd8ff4cf8277bdcbf75c25ec9be286692d49e2f7. 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/ZAUM72300966.