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 0xb73bc1ec35a8d43432b553af021f514b95522d0b5c50bb5b5c7b0f648f359b3e. 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/c3b4f669-b7e6-4b8b-8912-0716256ebc1e.json and https://artists.proofprofile.net/proofs/artist/c3b4f669-b7e6-4b8b-8912-0716256ebc1e.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 0x18c9b534825ab6ca9b1ce95aaf667ef65f97083a7c61ea96b0211702a6dbc578. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/DETO41645671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c9331ead2f6cce6a6cace8f1cd31a19456dbefe8a50bdb61a1c0ac886a2f2c0. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T09:57:18Z), 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/DETO41518177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39ab1c8785a8b0610f91b810f63196afd4d4f3c0082b6f50ed254f3d4454dee2. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/DETO41729550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ae5b86b8d94311c08a9eac38baadf970807ac5e7c5cb8e3e1c578b86c8efc31. 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/QZAKB2441743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06a4446c12167a280dd2843b38f78887a00dbff7fbc41cc6c32ff59437dfca69. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QM42K1845552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d850ed777c2c65def1095c4ecf21957f1cf22e36c5ce136a5cc298c745243ef. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:09:03Z), 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/QM42K1820672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fb79bf4e4c6d3bcabb36447cfa113b12225618135b35e6b94c1406d9871b981. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T11:00:56Z), 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/QM42K1852155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36716f7e8d778c30e5101d2e61d5188930833f3f7580233e48aa4c45c0f59e6c. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QM42K1826449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f776e8e496731f49793d499135b1b4dcd51f929de9958f8e9ef9fb05f799b10. 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/QZAKB2441747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d5df36436792a1119a22b16845f64e8731f446fcb379e4cccfb99d49e995db5. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/DETO41616414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefcd39a0d9d1010a037ac9caf4b6d6479ea9a1a39487682244148b165eb486d1. 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/DETO41656318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x539fa969b1ce9a40266134629fc8ea4d33aa8a361558ff9130ea5ae3926010c7. 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/DETO41640579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d5df36436792a1119a22b16845f64e8731f446fcb379e4cccfb99d49e995db5. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/DETO41616414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee8d84773c17638375dbb188197bbe523542ae795b4f853007dbe459b81a688d. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/DETO41666189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1efe178e709c6cc11faa44e1c80c8c726d7ffa4b85b642a808a233bb19e72043. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T03:38:48Z), 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/DETO41615701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb328e6900c78fc083a7d7febbc7fe6849974261526a4da46054266cf349572b7. 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/DETO41690783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x668b2e01f3fb8c07a6db9fbca7cd70017593bf4ecb532683909efc8d34da4ed7. 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/DETO41535518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x771b4f38a33c9263cb3d40afacc8825838cc906a4732b7d6f011a8899a0c05b2. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/DETO41521786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13042b545af763bc9f271daa6e0a9a4c09011bcac4fc4390aa5aa42a709bc9ad. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/DETO41600618.
Da Ligs, Etno Engjujt, Erresira e jetes…
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a7ae69d31aa5aca0cd308a9f7f52408842ee783f34b3e26d3b65625d0080421. 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/QZAKB2432308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96054b0011fc3f3dc2eef89207a485a61e68b93f02a8ed93cfd8812d483c5dfc. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:13:56Z), 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/DETO41630941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10bae146e48678e3f2b35636e8059c3b8a2d7368aeaea25a1dd5ab2bc7fa47b4. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/DETO41581520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aa73521b48459ed2d032e30ccd5961f15607da08344f0e693af3d930a4651b2. 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/DETO41828916.