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 0xdb497e0f89e878505ebc3e30a3488016e213b01d4dcbce24b0a9b45cefb4be88. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fef4ea22-af9d-4f09-b54d-4caab28cb629.json and https://artists.proofprofile.net/proofs/artist/fef4ea22-af9d-4f09-b54d-4caab28cb629.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
In the Music 2010 - Cristian Marchi Perfect Remix
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 0x3f0a8901849e37a49e9ce5a6043bcf93541e87c4ddd6a9771d301d4d58cad9d9. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/USGMA0900012.
In the Music 2010 - Adam K & Soha Vocal Club
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x270ae2f0ffc1b3ed0190968b9baa33bf1bc01816d5053d06f0acaae87a53fbf5. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USGMA0900017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe762848535ad9d41092c3b4f3c7e6d6a55c1fc2b42682e8dec92e2537ddc2f48. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T02:25:36Z), 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/QZWDW2421177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x704add74422617b72dba4e2a7bbd6cb7a8ed20ed494fffb7eab333cc88eaaa17. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZWDW2421181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2768b698f862a3c1fa57f184fd3509b0ed1581a1d1bdac7fc3d9298dd0b50e1b. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/QZK6F2524774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eae66537b7fcd16acee43ef241701b1104ad0e6df4fdaecd2a1bd8f651a6d5a. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZK6F2576536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2dc97bed658232a0219ba1c547c75ce27fab9d09bb178e9e34fde32f7928701. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/QZK6F2568804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7f6e13d147962a7590fbcebbf89ffece91dc586b86ecb94f1db09aaf622671a. 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/QZK6F2527490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x850764dd5f7b870bd0404a75486a65574f04bed4ffaff47bcaf3bb83899040b8. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:33:59Z), 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/QZK6F2568875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1e935ccf6c16475494750659108345cd3693de57416c7977113081b07227720. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZMEM2513312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x297f0b9149515f36cfb22bb7aadf96262a6afdd0bc4eddfef737ebf63c7e7042. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZMEM2515267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54e54c19a1fd14bb11c336fffb30c68456db797cfa28eca5059670f12acbc2a2. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/QZMEM2538156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e98ec281a50546a84ee2538bd52cc92fd4e3fc9c2523f95fba2a64d8dff6fd8. 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/QZMEM2544327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef3da2ac6543598e9bf535ffe27815b90ef84834a3d7b53a603df37be85b2042. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZMEM2555296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa33297e8137d277e2269f5d4d6aa04b75cc0928804bc834d5fb7c58ef800f87a. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/QZMEM2510334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb41ab123850120e9aa67fd31505435ab20360e6d6ff82b89e072cb3119ff1da. 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/QZMEM2546236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x438d5843b13cd6e1b755950bc1fe99e8d7192d4156937704d53e3c9c0633f39d. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:52:52Z), 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/QZMEM2557350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x368a1aa9a58f3d199d9c30f8be4f45ab74ab86d28fb5dcf50e6ea2f6eb72948e. Chain 2 (Bitcoin): anchored in block 958378 (2026-07-17T06:45:39Z), 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/QZMEM2540235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0fb03cdfec32a6893d75ba07ec0db45edb078240106391a28632ac310c61715. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZMEM2552578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff928d5d99e5e95931e3f59200a1b6720ca7ee4c69242b1ec989d1a7f2e39df7. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:07:57Z), 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/QZMEM2576566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x735f26f0f24a81264029cd754e81d134db87ab9ae1754bb6ef6d7452c65ebb50. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/QZMEM2583487.