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 0x50012be285d0637553eb6ca34eb1a19675c708e989104b4dcc70a89c23f585a1. 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/8d2426a4-5620-4011-960d-f62370073111.json and https://artists.proofprofile.net/proofs/artist/8d2426a4-5620-4011-960d-f62370073111.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 0x118083f1f0346fc639b85b9746b33fff90fac787bf3731b059cf44a8414736c8. 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/QZ5FN2002398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05c27f1c7001fccf0aa5dc6f890ce223469ce20aed24c2bf373aee654a8829ca. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZ5FN2002403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffe2ae972a2ba99a40193d0129a3aeb0cecab2b35d956a8b584ff64b9a716ad9. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZ5FN2003105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffcbcb516ba34e6b9b15e30aed362a7df14f44fa554815d38f1b4cf3a9fe4c62. 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/QZ5FN2003111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42951d4d78a03c181900adf35c3af9a44ccc74f171700fcaf70dfe41d53dc217. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZ5FN2003632.
Mi Pueblo Familia Vallenata De Romualdo Brito
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ed6bd7e29dea18f11a2aeb5b39d53acb76d0860f6934b3181bfc08356e81cb2. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/USR010614307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37eb58fdf3741983098f3f8ebe6a8db4828b3116e6fd72c27e9c53bf69931cc7. 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/USR010614309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79e9e62ce0da18f82e1665b148589ca333606e14645fa2d84415b67ab2acbfb9. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/USR010614311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc7534411548940c2947d988fe2a7646fdeb059a0fb6a09b92f69d5567265f1b. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:20:29Z), 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/USR010614312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fdeef75aca9b9c9a813a3ca48f1103f3e697d6e49ea49499a659a835ba9bf68. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/USR010614313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4be6445bdb114483a7ec0d955c59c3b2b43b90fcb2f5563a1a3926f1b12d200e. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T10:54:31Z), 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/USR010614314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x005ccebc25dfb5165bd8b3bbd6e2c635a3b02758eb78635b188fe08f808efb91. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:51:49Z), 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/USR010614316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6701ed5a09e8fa7320dddba10968a50db04240c3a1e595684b86da07643e2534. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/USR010614317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9a43e08d4cf83e7843b2a9648dcfbc800e26782bc560041dc54cc89e41cbe78. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/USR010614318.