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 0xf9a1ef52198b35b7eb9b73d72f1927fb4f23af0c95cb82f7d7764588b6a7b47a. 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/1516f121-6c9a-4bf4-bb9d-cdefea3fdb37.json and https://artists.proofprofile.net/proofs/artist/1516f121-6c9a-4bf4-bb9d-cdefea3fdb37.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 0xdb6989534c04eb93ccf72d4d26e9528def72f099de92c58be63dafd25a1eb70d. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QZHZ62166772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40c9e325d5ac0bbce51fd7af1c691429f41aed1492a3ee08a40b4c851434b684. 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/QZTVM2131001.
Explanation (the boy that invented igbo drill)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e283bb7ce7f63818343abd7aef6b479956ee65d841fb480e3aed1b14ad2b8bc. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/NLRD52300028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cb8c2495f0453a2fbbe2f730e23545518d72d03e730dd784acba9e5c8dd51f0. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZMZ92250390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba126227400822fd4549ad3c32dccc99aa233e3a400fde30cd2abeb152d534f3. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/NLRD52133443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8a709c4d722e6b08b876a9337b3faca07614fb856941d51f2d70d3e10159a31. 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/NLRD52318446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6719993b3e9e1294ef2410920ae8e99660117d5b61da4b14494a20b33de5df5f. Chain 2 (Bitcoin): anchored in block 957714 (2026-07-12T14:35:57Z), 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/NLRD52300196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dd539f23721d07436024ced3f3179a122e31fde8621150827624e7e355e8f54. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/NLRD52318442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6259e05b4979d4bc41079632a0d6022004ba1ce4feb6aba475e7c4be35997fa2. 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/NLRD52318443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e283bb7ce7f63818343abd7aef6b479956ee65d841fb480e3aed1b14ad2b8bc. Chain 2 (Bitcoin): anchored in block 957723 (2026-07-12T15:34:17Z), 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/NLRD52300028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8a709c4d722e6b08b876a9337b3faca07614fb856941d51f2d70d3e10159a31. 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/NLRD52318446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cb8c2495f0453a2fbbe2f730e23545518d72d03e730dd784acba9e5c8dd51f0. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/QZMZ92250390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82470b8937461bc27642135a06799841e5c15e0f6caec38c820e73afdbe37c05. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T02:17:00Z), 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/NLRD52318438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaf2fc91f4e005fd12626d3344263c4269add41b84da33683d27ca9fbadff5f0. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/NLRD52318447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd05d0389e99590462880ba0e3e1988bd3d97abfbf102485a84fe029fba9e7124. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:11:31Z), 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/NLRD52318448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba126227400822fd4549ad3c32dccc99aa233e3a400fde30cd2abeb152d534f3. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/NLRD52133443.