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 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 0x52cec42e550283553a83caae6efde185eaa8b49006b973f7c93977c2e0f78e3d. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/612e6bfd-8336-4490-a51c-21b6da46a20c.json and https://artists.proofprofile.net/proofs/artist/612e6bfd-8336-4490-a51c-21b6da46a20c.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 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 0x224b542eeccc934be2d733038d9761f361cf091ee58ee0db17615a55d5b719a6. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/AUOY00500108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66018ecb66807d7aedcd253cb9b2ad04e1f5cdce3725f0d2fc36fd7843e7f3f3. 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/AUOY00700013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1be158cbe4b93e20b1aa5eff4ea92574738f2baccffb334972c9641170ff8bf. 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/AUOY00700001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1be158cbe4b93e20b1aa5eff4ea92574738f2baccffb334972c9641170ff8bf. 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/AUOY00700001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0cb8384572b8495e1be89a46d7b3e90b06d93b01f9c518d975865113260c4ce. 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/AUOYO1800077.
U Wanna Little of This - WAWA Radio Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c51fee9f18f2e03e624598157bb528866b0dd200a4cb456e4aea61add010451. 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/AUOY00800013.
U Wanna Little Of This - Taken from Ministry of Sound
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01ce851c5915cd1d5d4dcdc121bed8f52e9953f2636a424c1c63eaa1c121ef49. 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/AUOYO1800085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77dff40e90dceeca8c7ec71207f5de3a6d1ac0af68b621d1472144c3baf4a7ed. 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/AUEM01200024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab134a493e54037af761bfcde9663f71bb3c091e07924fd61d87120fb49d87c8. 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/AUEM01300042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18c2d19f265413aa781561b754864aff531bd3291416f6b6469429479bceebb7. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/AUUM71400889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x413bce12ab848938f5a46abd1449a69f563565397594e73eeb81fdcb7083de46. 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/AUUM71401163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe692bb4bd5d901fe2544d4b5f42449446eced30bc62b38459f865c87b477df35. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/AUUM71801023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c8fc00f4a1e482eb7c4abceae035c67ce54e9cb512de2fa0186d107146b0cfe. 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/QM6MZ2392497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x665047c2df5f3323d4808f86a92043a4aaba1fe9a2957ab10d046dcf490a25c8. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QM7282370495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x665047c2df5f3323d4808f86a92043a4aaba1fe9a2957ab10d046dcf490a25c8. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QM7282370495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d6ed5f717bca1bcf5eaa102e537876efb2fab953288e4f4631cc18c5719845e. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/QMFME2389151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c7f4b095a5ba6277c6fb2ad0dd0f70d1d294031fef13af02a188c047fc0318c. 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/QMFME2393616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37acd27befe84d4b19397de44d85db34f4129678d65a58fe2427c8bc0111f974. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T16:17:58Z), 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/QMFME2393624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c607579a834a146421a0092572d4d338658dc3212669f449b1317b242ecaa3d. 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/QMFME2393660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cb0feff47b398a8092b066459720b87c8911a90fcfe71ca0796207d732614d0. 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/QMFME2393661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e38ab92d89fbbce533fbfa1393626bc913033f891a2369bf35cccc8a1ec6c19. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/QMFME2393664.