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 0x49c8d2a5c53abc54430264563b682270186e38ef2f3654a47cd982046c3ee107. 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/ca0de7b6-bf4f-4f82-8e21-626da404d106.json and https://artists.proofprofile.net/proofs/artist/ca0de7b6-bf4f-4f82-8e21-626da404d106.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 0xdca3bd322fae780bc603befd9b3c14f6ab40ab1cf0d8b3e819b6dba40afc59bc. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/US7VG1940588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f6d1389500dbfa2eb5daeab60d73dd2bb680fb1cd826178484bae33a2f3e2e7. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/US7VG2019318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedcf23ae152258932387b2bc9f83c50b05f259d829c8749878d79a4d800b260e. Chain 2 (Bitcoin): anchored in block 958417 (2026-07-17T12:56:50Z), 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/QZFZ62070908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50d86b07d827c4a9c9a5c11b38f69f88dacce88bd11c0758c08f5a128860aa3a. Chain 2 (Bitcoin): anchored in block 958126 (2026-07-15T08:17:14Z), 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/QZDA82089241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4ad03bf0e243ef153d23a5934511a790a0037377be52012af4c0a87cfba168c. 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/QZK6L2060631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd4d7d0b521cd5dad0e89ec43c3507c9e17e69882b2b8cc5eec7be78a84ba528. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/AUMEV2134402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed51f8eaf8018c3b584c55781d3f735917ce63120b108de9e38cedbfdf327105. 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/AUMEV2239091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca676d949422b78848962bb386ae0710b8d6105903945c4fc3a83cadc865fbf2. 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/AUMEV2374781.
Up (Piano Soundtrack) Speed-Up Pitch - Reverb
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc45dcc2ddf7a2195c3c6c2a8ad5bac07ef3809339e1b7f0de47bc9a9d10f7913. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/DGA052396783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8304b9c9314bec78c9dbb6766027acc67e73d23259e5a6a6914a2f8dcae9a76a. 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/DEPI82321066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0772cbecf82a55eedaaf8822023481b89c42c937ccde83642cc96a748dfeb46. 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/DEPI82403369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x403bf9d644d29b4e1eb22149d9923d1f63fcf1eac4d70211e712daa75f059f18. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/AUGBT2417489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75248bb17f171e5ee00348d93f54e85b3217e0100c69f1522ee58edecf2593ec. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/AUGBT2463487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3926044634940158d313d2b1ebd9ac8cb85823ae0f324d22411ff76097aa93a1. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/AUGBT2463489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1f418a13e8062e432c8f64e26ecfdfb8510fb3fda6e927938a50307963525e2. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/AUGBT2463491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4940808cfbf19e3b42b7053dbb0bcab73994a6f8267309f640ae5f87d7406549. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/AUMEV2500477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88941d7a26a08e8009f92e9c6c514cd8a7dc93056c09b2e648d4c0287d708297. 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/DEPI82457956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe68f43798c3a39e7e1e26b11d0d693021d988cb7a7af3c9fec2e953161f3ef57. 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/AUMEV2500222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88740ae558091280a866b49a0d5821ad6cc0b308ce2d3c3403ca660dcb26cb21. Chain 2 (Bitcoin): anchored in block 959063 (2026-07-21T21:45:32Z), 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/DEPI82457952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde8f3659fb10991aa15628a34e55308097649701518685fd266dd612bcd0cb0d. 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/DEPI82457954.