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 0x441db80a6b2987b2d6d65d17db15ce6d830794f1eb3cf501c1f46c17de39a978. 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/fed6d816-8070-4cff-81e0-f558fc7ae4ef.json and https://artists.proofprofile.net/proofs/artist/fed6d816-8070-4cff-81e0-f558fc7ae4ef.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 0xd7e00ead9ba067bf3565372ae5cf28eaac790a3d0cb656a1ff6a3ee64d6f58ed. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NLZ542100386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eff9e93190aab12b0e86411d96879e17a7c3eefba15ab11d12787748355de98. 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/DEE862200713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x966c9ca9b658fc976e55ab7a084df9d9b1be4b374b15d3ae496479d4e4f979a2. 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/DEYQ92100182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x743f0c959b2f5345e1e2692f70d3c4227c3fc73565363a873aed4dbe710332dd. 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/DEYQ92200227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31ff892c5db92ccb017f7588658e3fbcbf34a1e3c03cf18807373debf8e293cd. 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/DEYQ92200225.
Enjoy the Silence - Caleidescope Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94b81a732dc8fdde616539c6cdde87df177341387104c9390241a1c0106bde67. 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/DEL712010129.
Enjoy the Silence - Calmani & Grey Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf40654b572499c33f15b4e1f4d490e728cdbcef6bfc6a12ea59cb09f99373adc. 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/DEL712010130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae85c4f33255000f09eaf4ecf31a2b3cee2d33e5037374db48ba11e801858b3a. 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/DEL712010132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb384bf5f80a35228919d27402a6df19d7e4d0ae08d82337aede251b14d2beae. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEL712010080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0be5ccd29656721eb7c54a5751a430acdc0acb374f2e8578a5ab5bd49da15031. 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/DEYQ92000052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x047bf6b85173d6d915f3fb82b50e807ef326d41b1680c7d9740c05bc0623f2f0. 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/DEYQ92000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41f00da0a564d83db652aaf8910d15f69d5b1cc26b9d8826c5f1bca8b5adcb63. 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/DEYQ92400334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c51f15fce76d952707eb0547dec7077f6af326f71c94f89f674dbbeac926159. 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/DEL712410086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1199123e74909cb4c07181191783deb63af24cfb3f2d71a13e19a848ba22161. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/DEYQ92400308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88354d91b4bd5f5a1331edd6bc912325756f1c398535c3c26ab9e6973830818d. 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/DEYQ92300298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe04495a825f76fce388c086c56711fd255bc0f86f7f7a7b95cb1d40eac2fe29c. 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/DEYQ92200257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0235d3a977f80663e784389c080c5a3104ebaa56cafa1156fade76e6d792a2c7. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/DEYQ92200251.
Dein Lied (Crystal Rock & Marc Kiss Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c1a73be4b3f5736af3c8cc352d57f8aefdc346aec5b80fd39bf3231151c2ffa. 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/DEYQ92200214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6547cdedb81bd763d24f4aa4fc2f89d3376e79da302578d5b017904f573b31e. 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/DEYQ92100187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae74f97a0df9685a397fe294bb041dbb300adcfb490c606b3e4634d9ccee322f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEYQ92100157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73fb5379a51fdf48148f3c235be142f5806034945b5fa31e058d5684a7522b2c. 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/DEYQ92100142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61e9eff0bef24cc9b2e6c4d58283502d6365de407ef98bc17095834b32710079. 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/DEYQ92100140.
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 0x88aa7b0118e9c3362750a741fc376aa7a727dfe31193401afd2ec84a18f8a4ce. 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/DEYQ92100112.
To the Moon and Back (Remix Contest Winners)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11d9b4782572539606824a9463a8e3dd641e4abdcea8e0dcc3d482bb99f9daca. 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/DEL712010249.
To the Moon and Back - Marvin Klein & Umberto Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabc46744fd4a3ab4fef9a3bae01bb642dbcf3e7f7295c9558c5a5d2352155fbe. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/DEL712010250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d663fc5d4698cc2d0a9a7a68a6f2b177a598ea906abf536706b2991238fb767. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/DEL712010182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb980261da381d54a81db8261ef935e3a8d96d4ea84f3fad517352b51daf0f8cd. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEMA61900342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d2aefa0afaa4ce4c797eeaec091bcb5421b21569564106395ee1f35bb1bf30e. 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/DEN061900289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbb7dfa8e4a789a82c108645b4987725662c0d25a28a36d30a3132bb724149b9. 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/DEN061900292.