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 0x0297268b43166be554d7b8c675555da24e973f332146170a83a2f613a43e5bdd. Chain 2 (Bitcoin): anchored in block 954553 (2026-06-20T11:51:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ad460ebc-f9df-41b2-a46a-dbe4ab72fd81.json and https://artists.proofprofile.net/proofs/artist/ad460ebc-f9df-41b2-a46a-dbe4ab72fd81.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 0x384c89f9520d30da72ad1a3a233a5ac104f09a23cf1f26b3a4e969fb7969a92c. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:07:20Z), 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/QZKDT2201298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe14de059cad0b2fd7c74e578e7e3d34b73ebab45a0406b2c2fb8203cefadb843. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T03:08:24Z), 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/QZKDT2201320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x794f69b8f0a16af4c0306a55d8ec792e30156ac85a8be95c5ab2bb79862471c6. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T19:05:24Z), 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/QZKDT2201333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6ecebfe04d59cc1216dbcd140f86f74a778c47582c715e9c260c0619384e5e5. 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/QZW9N2267749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc752803d6ba5d71134d0f48f87c230e458c524c0a8f0408667c6cf65295de48f. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/QZW9N2267750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5f2d3e16fb10466013a218b7de238751837096a0fbd283e87b64d638aff6e8f. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/QZW9N2267751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4ae32653e09a6159b5a2676f0116e8e732d277d6fdba5903ada6fcf3b7ab137. 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/QZW9N2267752.
Metale Instrumental de dembow (Instrumental Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12d9c3fded4497a9823e2d457d0a0e30f02ed5365cb0b62b89cc673079d8670b. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T03:04:07Z), 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/QZKDT2300565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c8e009f46c668899f8737d9b1065313fdd11e226afe52c57b44fc3d21f9dd10. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZES52484354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7076d53832915572bc80ca0afe2b4dbe49c41fa1afc0f072d19d855bb1a82527. 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/QZHN92416255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe079efce5712b3a6c90ecfb884cd4318c82c191807fce04c5c2af130b3631d01. 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/QZFZ42557587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b6f32999efabb3f5b3eed50896b6eef0bdbecc2c281d4320097a54e4a94c5ca. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/QZES62553478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7569a5013546030a3db0b45aba8ea152e7d9a8613695faf7f2e0b57fb4e5847. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:39:07Z), 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/QZK6H2505993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86dd9f59a7391724ec259900cd30d69613c820dfd43d67d439a235ee586b3409. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/QZTPX2228751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbcc8af214963cf1084a5d6f49281a11cfb55f05a5c5ef1c97f5676d87adc950. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T18:59:12Z), 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/QZTB82552030.