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 0x2d1cb944225f3062ed8f0555cd775ba6c73d3a04e79439b7b8fff013211c2952. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fb4d7afa-6c99-4010-8228-750b87afa97f.json and https://artists.proofprofile.net/proofs/artist/fb4d7afa-6c99-4010-8228-750b87afa97f.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 0xb8c4da49f7b728752d0af1aa4a30a0bfea02b605a49ca6bd8d350274527656dc. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:31:23Z), 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/RUA1H2146667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7d8c48cc1828d49803e60545c65cf079415f2c30d49c70c72a6102337bb6fc4. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/UKR6V2117385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b07c3b883d738d7be7ad8c656af6a56777cebf019b383c1b7af2deb52294b91. 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/AEA2M2291542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc4a9ffd27db82f646f9e40e528a6545bb04db19074d77e3d07bb1c96cbab7a1. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/AEA2L2215665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5408afcfdb64d75ad75fba3abccc4900fdd06e32c2ad71f9c00c915b86076a33. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/ARJY52200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40e257755d7f37ee2a46989f732a1d0fd241ba5d0b0b3b44adf61424b1f1af3f. 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/ARJY52300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x569a4d1f0ae1c8713aa319fc9a52a0cedf28df8d2bab40677d7b2e341e1a85fb. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/ARJY52300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed32e23d7654da199e5c0140b5cda141dbdc97d06155c222f057f7149e3d94fe. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/ARJY52300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e38f83590cd30aec70e14a8222eb073351560e7f1e5781ac98849323080ef6b. 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/ARJY52400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd987ca49e42ff6d9108f3f9591b038c6f2206c293f2f048477c7bbc751049a87. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/ARJY52400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d67995102c913e906319089f660dd951f538714b0a57db6590d1a772cec4543. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T12:44:46Z), 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/ARJY52400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59f8b1695b15961fdb9154e6663d67e6dda88a42ff847cec113160b421c972f7. 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/ARJY52400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x986808f93bdda2bc5c5d49775c4fc2c1c98033378010a582af46174d902eb73d. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/ARJY52400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb499fdf3eb29c8b2a2785c1383936a1c61c675ba5a984be3ccd57a532cb3cfc1. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:49:20Z), 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/ARJY52400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6e9c5750deb102a1f99e76627f514dfd98fd500cad1a235686963ed2a84da1a. 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/ARJY52400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3969aead9ad82031cb7009e8b377ddd6fc315b9e6ae6761e5a53784c724d37a2. 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/ARJY52400014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1993d8df49d08957bb9e8cf01ce3fa40b7fd05aaf3d699831984492af770e200. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/ARJY52400015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3238a4815b4cb2d898a775eab1b1c9aa57e6914acb863d9536c6d3349512c7af. 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/ARJY52400016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4cb18d22de16203eedbf13dc64e712d82abf332e23af8685cc783ce2c92ed2f. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/ARJY52400017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x643fcb3c8a07d3d11384d0feeddce4154ce5d03019fc8eee58c0c323772c3ae7. 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/ARJY52400018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffc0db47e9eb8b9942158b49c02559f9fc099938501fb2270870efed731eaaf0. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/ARJY52500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0adb685b2ea42253a50185f10ea8f49dbd1f8ee5a527511c85a65caa6734610b. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T16:05:54Z), 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/ARJY52500009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2497d63331fa066247bca4acdf9f312683acb77c696c840642c2853bc8f21199. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/ARJY52500017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x643fcb3c8a07d3d11384d0feeddce4154ce5d03019fc8eee58c0c323772c3ae7. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ARJY52400018.