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 0xa3d7e671634a1687c770e5f10e541c2c17f8ab147b3239fabb81aca3e0fbe531. 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/75eca867-a167-45f0-821f-7acd2653b7ad.json and https://artists.proofprofile.net/proofs/artist/75eca867-a167-45f0-821f-7acd2653b7ad.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 0x7bfae251db6f61a59711b60b8b6d0218dcb2408776a98e78b856212d3df644e2. 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/SKI202000054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa715aefba092c8124076d673b2ba646e9a38a72ec25b8593274a7b4a80523e2f. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/SKI202100086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96db81a946af4c58364edba5b7bf74a6e304eb4b0cc54206158181f758decbf0. 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/SKI202100098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4265814f9fcece54b0657f706bb2d05affacd05a179a25fae391604a8f002f05. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/SKI202100083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe54b3d5112ee18517ba797c1c9776efefa7829bc0e1f2d931605c49e2d3aa3d. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/SKI202100123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a1df80b6e4e5faded56af55efb37356fde81dc1c296e3001156417ee2d4f3e7. 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/SKI202100065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37b475d5afb5046a84d8a7b91daf1695a1560cf4762788705e13db9d7b50feb9. 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/SKI202100066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x534f4b9f638642fda868bee255f47b28268cd9f354a02e7f644b184fe00a87e3. 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/SKI202100096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf2f0fd1ff5f6e9e1060f207c92d30e88ec26dcbeefe22ffc5ffef63a397e085. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/SKI202100080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x953fd6bf0598d4165c05f0b588d6fd3131efd02ea56d7a0d2fbfdfec21a9489d. 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/SKI202100102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ddf24358c1b05560709005aa92d4dcbb8d374d9e8a2d2a8bb7b1b408b1d7f71. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/SKI202100094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a303f4db489a6798ac6a3f9ec087e71ad894999e83a9a65f11e52f70e700e9c. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/SKI202100070.
Largest Business In The History Of Mankind
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c1a3e8c0116744ebee0e42b5a8de4b2a0042aa77bec51a859d6e5d416fad72c. 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/SKI202200027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98fc21c03e9a9a4383799532db9d42be5254b1c83a8dd3de6b259395d30e1c23. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/SKI202100113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd364c667a8eef4a52029f2aae3524ef9dcee09045665cd58353771d442db8fe2. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:48:50Z), 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/SKI202300081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04112b4bba5ee209e4964f5b9d80169a0904a72bf67ebaa6bb71480e3a61f3f7. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:32:29Z), 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/SKI202300063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6178990ff82988ec0c3acfc701169344c22bdad1f19535f7c6c6e54efd8f094. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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/SKI202300102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x415a1ca1deed6439a75bdb36cd158023ac2dfc0f8cdba15e873d33cbe3d1293a. Chain 2 (Bitcoin): anchored in block 958644 (2026-07-19T02:21:25Z), 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/SKI202300100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce28b3447842b4e9dd9d3e790e8b08cb0023f34b1a9fd347c77e87d3318df149. 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/SKI202300049.
Let The Music Take Control - Radio Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaae25bfcb64cc8e0f14af0c6be4f25a655a9babf91e841724c3dde440ee752b5. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/SKI202300089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe08ac3fed291c2d856d97b93f6d8319d8dac23598487bbfbbc2e5cd07ab756de. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/SKI202300096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17dc146f916985f7ceecd66db893c0b79545548bfe647121865d4246cbd5972d. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:22:44Z), 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/SKI202300108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x853f5d6247096b1eb26721fea88a6edb04d44cef95356f1a63897b0b1e87a899. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:40:02Z), 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/SKI202300114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ff60e839d96d1a89feab051f29c48c2ffcf6634f1a7aaaf746196af2322957b. 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/SKI202300128.
Kakao Trinken Machen Gut - Radio Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb248d355446df50ec393dbcdd054e50830f2386fb6b09fea8da0b77eb434d799. 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/SKI202300129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5383fc45a434086d4a014a6d2ae8319cab8bc2fd1e1cdbc36a8352fb652bc538. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/US83Z2506352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc04c2dadeb236efdbabed8d3b6846240f4c8076fc71503663b9de55466264e6f. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/SKI202400096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x067909f682a007b28bb12e0fac324004b5efae7cfa5f8fe5c3e8b5eb50cf5b4e. 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/SKI202400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x983625d75284cb872fab3d1390b294ba4f1af050a12ac1f46be35dd8c70ccea3. 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/SKI202300139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x621641dd55eeb86598b36df4e2a830b15611b902d8e4ecdfac4bf0867bf9209b. 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/SKI202100127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0344a0aa008ba4f004a9fe4d23d49adb23f93b059c1c7a51b76d4aa69014527. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/SKI202400012.
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