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 0x90b7cc20c59890d4ca79876554910ae42982485738c0aeba256b9476f67c4f4c. 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/7c290fba-46d1-43e2-bba0-63eb106b7efc.json and https://artists.proofprofile.net/proofs/artist/7c290fba-46d1-43e2-bba0-63eb106b7efc.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 0x2d0aa315859c172f4ceec2b3b64af8ee345eb8ccd17b3b1731fa8e57f4b16c20. Chain 2 (Bitcoin): anchored in block 957737 (2026-07-12T18:02:09Z), 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/JP92N2210503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ac976ea6cbdd4aecfdc41413076f8220c8226072ca12de8f081d17863ad2d98. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:04:23Z), 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/JPVI02304323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dd2e0d232a486792b8a653a6339889cb91f8e5d8810dfe09655fb38ea799014. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/JPVI02305333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x678ac5ff312134cac93cfefcb501fd63e79fa1a674f789b10536473a99299e73. 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/JPVI02400964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d1d4789dd679fb2497e6b5179dd6f0457e54f6ea1cf25c8719c793fa030553e. 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/JPPC02413361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4622e5526ad75887748116ff6d26ec69b75f16bda13ac99bb5a020a4bc0eaccc. 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/JPPC02413827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf08f44a63b3e4e70296372e96415cfcdb535e5844fa581a9366bceb8b0038b27. 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/JPPC02510826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fb190302eb881aa1b8305bbaf186daea7cafce7f995ddfd54eb2fec33d212fe. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/JPPC02511329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c1fb5451caadb949cd1a51ab30dcb060924fb7289e665bb8d4363685b2a170d. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/JPPC02511330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefbd3afe29b8bcf289bbc6dbcd726ac34f3ddb85de22f79fddf4fe4b4aa20724. 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/JPPC02511331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6db212a77e4c78cc738cdefa7b606677a746bfe5363fedf792e88d0b66972f7f. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/JPPC02511332.