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 0x8aa67cc573f70304ed616d6879d644483679cb623970cb905b53c4ba3a1597dd. 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/e79cf27d-5b27-483f-8516-5f6482ac6969.json and https://artists.proofprofile.net/proofs/artist/e79cf27d-5b27-483f-8516-5f6482ac6969.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 0x113c6d157b3dd06dce2db428be00cba1d2b17db5731969b41475d65527ebdc54. 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/QZHNC2157542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4bfa09247e232b93f449efc084ef79bd2d01e5f77d3e50230de82dcc3cddb16. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T01:08:10Z), 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/QZTB92298392.
1 Maddest x Magic c Sharpman (Darker than Last Night)
Darker Than Last Night (DndVoss X Tman X Ha-keem)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x140eff74fa8938b7290938fb34f1cf6297db363711c1a06408dd7a8ef4be7fb2. 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/QZTBD2305015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e6e7dd3106b3c09125a6af4e6698dc2c7aa5ed56da6c29f29fc12b4a3cc9c53. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZWFN2353109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81f2f0293b4dd22c706c3c232823a58fd8b50af10b40958c4f38470b4196e381. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZMEM2411957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9d938fc27d01051e4737cdb1fc455a9c635ff5a9913149a9aee7275357191ff. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/QZTAS2432581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbada12117aa31f3c969576470c2e7e09a41ab2827e88a9c5219b841bb9f640c8. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/QZWFV2423705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd129fd24a8cbf1b9e7506bab09a16df154b13ca5735443d83da8a5b8073c8405. 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/QZFZ42583901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e82f1d9bdeec99a8ef67934697f7b1d66cd72d6533bed4d3f612b1065576919. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZTB92595380.