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 0xbcd2aa3dda512dde4964cee7c6dd6c8092bf50f06adc1a2945e8fce573ceef6e. Chain 2 (Bitcoin): anchored in block 953602 (2026-06-14T06:58:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0f3665f6-ade1-48df-9abd-b45013ae41a6.json and https://artists.proofprofile.net/proofs/artist/0f3665f6-ade1-48df-9abd-b45013ae41a6.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 0x97fc690f2220c03fc4a1eb4f2560f8e34316155f039378c2e6a2d4a37e608bbf. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/UKN6K2301345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18cf3776f047151f7b8517ba260f6f63959d62083235d78b451fc53db60fb8b4. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/UKN6K2301346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x760148395c610040e12f16e291199be2c952245e684c2a9fcf4c2a54234f73c2. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/UKN6K2301347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf40eb934ac76cd23607d5a60afe729e442e4485dd42d867ef983a085242c0823. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/UKN6K2301348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39dca62f206bdb4e615c37941f864aa59d6cb7c8f46bf1c9154a05a643976559. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/UKN6K2301349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x319568bc5bf239ab0058cbb04c9d3c23403b8bf6a019a7facfafcc116c412b1a. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/UKN6K2301350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7db8eafcbaa45865adbea6ce88ed4ba3c50bacc9fc36ffd205d6214f0ec31bda. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/UKN6K2301351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87d12702d33ed25d512509da913b6a559aa90071198a611615036f2d88e37641. 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/UKN6K2200068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd75548c25a17d6da71cb61ed5a97799d399acd5cfc3ca64cd029080c30881562. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/UKN6K2200069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ff4a68e37839883f0468c0eda7d1d81a71818b94928378d41a93c6c8c4a39b9. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/UKN6K2200070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2347b9b8c55a929beecdd94b46d5d3b9cccd7972cd4aee7703003dc6ef41653a. 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/UKN6K2200071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa444849ea3049693539d2ce9ae3f4717698804a9d1d22e1e6bdcd980352ffcde. 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/UKN6K2200072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xace3381f016fc03b147e07679c7226aecb3863abca0d46734a4034d17952e7c4. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/UKN6K2200073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39ef4c98cd4bbb82136e8c923637dc0b5b2b460e0f03c6fd424f9425b2ce28e9. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/UKN6K2200074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd80ccfad3fcb5a435bd3e716cc0154b1b4b62e6ea42a8af862987be926c85e71. 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/UKN6K2200075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9771bcd7a9b6a20cda72dc9ba102fe6d0af42bcd302ef338d8946071c8f60100. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/GBRD52100283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5e8fdf836c9e3cb73635aa24d99dfeafb6a62eed39700fcf97aa7c4f2c8b1af. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/GBRD52100284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6bb84d74c1c1b8fd2b7d02436224db61fa1e95a382cf92d4ca063eaa4228130. 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/GBRD52100168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c169f3402d9f3f83c3897786bc28c13077c3d5c388aecb158244aaee33bcbf2. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/GBRD52100169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cc80fc295ec8b4f1d101f443f39df507edc8b895408f0eb7605cd21c431d70b. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/GBRD52100170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86caa6a34e54408760554fc5bb796835252c4989de8188b81233b30452a802e4. 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/QZPEW2434273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9da291c8b086a447bcaf01472de4f048cd55b7c85358438098a29ab56e423d5. 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/QZPEW2434274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0021cd2430aba63cf0ff3d007bb4ca8ae840c8de840a4582619320cb9869a45c. 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/QZPEW2434275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc936695121ae0e510682147e0d78b96260cc0ab5a916a3006141370830d7eca2. 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/QZPEW2434276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73c82a3050353a44fb9e5222af6c1298fb9fd8c1909a630622aef5314e249cfd. 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/NLCK42238743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90176fcdd973dc8e568a9720bb85610789dd5babf8c93cb95052a293caa2eab5. 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/NLCK42238744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda30275ccb2089c1d24a0decda53ab708e0be39cdb848bab4f833b8a4cefd46d. 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/NLCK42238745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cbbeea0b9172e2bf504f4c255881fbb05ca64ecbf2a7c0d26d739919fafa5f3. 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/NLCK42238746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb7f4e151e444a0c18398050c570ce46ee065bc878358d427853d2a1f6abfac0. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/UKN6K2001260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeddcf03ff9a6aad138e4311941d08648450189a05d9396a799551d075f9aedae. 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/UKN6K2001261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b273113053a766b7c37bbc805b5e177687f33c54a65b5d518279e353e0723a9. 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/UKN6K2001262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c929ca015729a73a03a9379765e0eb499c347fdccd62dd2c509d1e90a8c85a8. Chain 2 (Bitcoin): anchored in block 960330 (2026-07-31T00:58:21Z), 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/UKN6K2001263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8815ac17e1aae6079f6cc7e87d65a306e93d7dadd4ca0f106741aae82934d45f. 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/UKN6K2301569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6f86bb930efc1b3b88f3a95de00fcfe7251720e1f260fdd638b42594b6a2c55. 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/UKN6K2301570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec234883d931ce6d0056e0f91e4bb818f855e572cb286464b689ebb84fe157ec. 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/UKN6K1904496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc711a9bae519d39089039e04d2b40b453a5ea03dc85f3c3053f35543ae50bd51. 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/UKN6K1904497.
Globex Corp Vol. 4 B2 - DJ Mindhunter Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0713b5d73dd6736c0c7e02a29dcb5d659f11d1b82a958b3bb32373597f1043e9. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/UKN6K1904498.
Globex Corp Vol. 3 B2 - Phineus II Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c83c945e082de82956eaaa10ffe9ff1a943ee8107c16e080b3956d1f32289e3. 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/UKN6K1904499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3fd6567b282fa655721ef825117c4be1f23317c98d1838d0da9f13b0178a739. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/QZS662132610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46f80cc7c41d181afdfe2b02b4c77f464bd2603dcee2bd336a5ddb0964334b63. 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/QZS662167455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb680686198d0863d1c437306d106ef2890d16a62a23257ed516fa8d2d77b1f75. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZS632181725.