DUT may refer to: Education Da Nang University of Technology, in Vietnam Dalian University of Technology, in China Delft University of Technology, in the Netherlands Durban University of Techno
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 0xa2e65304a290c1a9c16690bdad72534c84676e5e40ce0af20305a56165827df3. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/45abd610-dcf9-49bb-9efd-3a864037f000.json and https://artists.proofprofile.net/proofs/artist/45abd610-dcf9-49bb-9efd-3a864037f000.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 0x16dc89de5abd2ae8feca27a1d4f4e97c1e08ef67fd4a55b77a33d3b2cd4f4261. 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/ES5591100349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26b6eb21b75b0b6e014515a2be8d75cac2bea0832ca4bcbe520ff37a3d98ecce. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/ES5591100350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51297f4839ecefa545cda5c0415fcf526bad23a4f81b5d506a862a61b19d6608. 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/ES5591100351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb456c81d70a04248db551bb6a8806ae1f7f78df8d3eab396a58648bae1d7a23. 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/ES5591100352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29bf1db22f498d5453b4282bc66b8251d7934ca7e8b2be4e5f3d05e382c8ce6b. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/ES5591100353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9ab8c42b9969331108305b62d4e18986010bf58dd3cee893aec166440042b00. 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/ES5591100354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aeddf4631f1fff86f974fb1d75fe898e24876d5df283ddde609f4f271a96266. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/ES5591100355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6c348264057c1b5b67a157a18b674fb9da53f8082098a58fac0c7688f79e641. 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/ES5591100356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5550a4b778fa48b2146f3f39568bab41788a21a15098dec2d6df0a4d6e62919. 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/ES5591100357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70e9ff2b235290aeae37cc199e2fc21f1c820fc9fe993b10f08db49d2c183cf6. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/ES5591101548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccdc1d3ba757429ebb1bcf2f3dd6d1a7dd669da2c8a62c96d0984d01f8f6cc2a. 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/ES5591101549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8134abe724365c68d7eb8f2d219f4f6313e24adc5a22ecc5e0f6ae8c9b10089b. 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/ES5591101550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x090604f172c5fc4f64dc460f24e3e1d520372574bbf682c64249b1cc0a2c89ee. 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/ES5591101551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32fd72ce15598d8aefa31aa51bf81787fcb5fef57082d791a9b4db9aebdae091. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/ES5591101552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2547bddb789279a4d41912a86383ef6d3d5da5d6649e864234463027b6ffe34. 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/ES5591101553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19b44015bd22166e9f6c5c982a094a7c0e4bf6b19eec9bf69ea5310ce171d77c. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/ES5591101554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbec8e3dbef99e2b8a291d1a68926471f2236ebbfc0325c1835e19cd51997b2d. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/ES5591101555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97aa6a53e20436d12f079b06c656044d2d2df0f8bf80e6fad4606d74cc6a5cae. 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/ES5591101556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ea2f6828ab5ae42e125923200d1832989e5b91b1cb050cddf04ec05e0e7dd52. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/ES5591101557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d6da5054ec69a8fd59539b422200a7d677c81237aac84cdaf6b353826917882. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/ES5591101558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4500d9e25130682f6c659e419f9f64f06e10c39a9f20257392bae8c956906ba8. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/ES5591100359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cbb64abb18be91453be0ea94c88f1da6f29a6c806625ef9747fcfc270f898ac. Chain 2 (Bitcoin): anchored in block 960419 (2026-07-31T15:20:33Z), 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/ES5591100360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf88a22ace67c2036b46640b1615a1c92ed11a68497ce363e0030ad8ea27913c4. 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/ES5591100361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5569dbcab4e2ff737e8b419ec5a1d3b737d3bf692e6317e453be135d51b0a32a. 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/ES5591100362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff6137e6f691fc47fdf660d773537a6aa5625153cb1a197d9ab45f8d18a183c9. 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/ES5591100363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x884641bdceb8b709599f18e0a679aee5689fa2ccc90e538bd03a6368354f92e9. 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/ES5591100364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c2c465f812c730c48aea0f587a27775ada23c523d0c8de6a009f0946d303fb2. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/ES5591100365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeafac73c15817615db147ebc9a088bb8bd67a89263089ab1921406a5bdb4a24. 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/ES5591100366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eceb44951cfb71cb2d3a345a68621831e4147821f9bbf037d9ab2dbd85fa67e. 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/ES5591100367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a074e712e73c49543b2ffb39c013d137f5920d764f7cfaa309adb4f4445d293. 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/ES5591100368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c9a4749309b7c5e361e23f3a21a9bd317f6e69e0c292c9057795df7e41c642c. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/ES5591100369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9e1da291a08047bac5e668e0c1ea27b75b95a1d0248df20dbcb8524b3ae05c5. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/ES5591100370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb23ffed4ccf549236701bc482eeda08f1c9f63921bb79ae31195a83c5e065b76. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/ES5591100372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3299ad7fc86af15781ebd146cd6a4ddce6ffc5bcc5f82a32af20cbcc37cd162e. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/ES5591100339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6baf8fc3b91884390e2b629fbd4399f82f9ee5eb644adc823309289ae4de2408. 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/ES5591100340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c279b658ac773fab1850d343f9e7cb314003b900b239c17f11db9657c7e73ee. Chain 2 (Bitcoin): anchored in block 960179 (2026-07-30T00:39:11Z), 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/ES5591100341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc56b03aafa3cdd173ae144847cbfbed6d8c9e723c335a3a6874e83c5e29cf62f. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/ES5591100342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6646165fb22702587000d6f89653d24d8c309d02c81bea23acdf3a6cc906831. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/ES5591100343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaec49b7e25f519a1f3407bbc54d3290a1896d230aeb01273c0f205d9f7a376a6. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/ES5591100344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d5e250eabc4104ce070787a9ca20a9bf3d262c42881da6210043d7b08720b85. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/ES5591100345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa6dddae831a04006118dfbfe2e22e08afc7da39a767c57162c5543a486d266f. 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/ES5591100346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0684e497ead1fe2a11b3c79d6c08cd082795ae5bbe0f89039222e52f749e3c5. 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/ES5591100347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83866b081fe9cbbd40aa033baad0bd7b3792b45e5442264d5c7469cb56f28bf2. 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/ES5591100348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf88a22ace67c2036b46640b1615a1c92ed11a68497ce363e0030ad8ea27913c4. 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/ES5591100361.