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 0x22f65de7fce35e9a83cc33c08425796f5a50239d44a172e55a97d552df20a36c. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a94aa895-cd03-42a3-a89f-6b3d1073a3ad.json and https://artists.proofprofile.net/proofs/artist/a94aa895-cd03-42a3-a89f-6b3d1073a3ad.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 0x4c9a9301072298e9fcd402924ea2e3bd0d37e37a15daa04d109c251746a2dfa9. 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/JPKI01711378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaa170e61309ff42220551a62305db705ca6d811284e167dcdee203bb3e2379e. 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/JPKI01715480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31ab9852eddfa2fe036993b7b164c10a75576eb0ed73780f4a6e480f5476af9d. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T01:55:03Z), 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/JPKI01711376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x482c1a758cf8ae89436094b34f9af14636a3b373edfbcc18cf128abcb0fd751c. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/JPKI01715481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c9a9301072298e9fcd402924ea2e3bd0d37e37a15daa04d109c251746a2dfa9. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:53:14Z), 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/JPKI01711378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc14cdfedf86c4ea7060877df1714a4f7f2a55e1a071ebb3da665165f78cf1985. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/JPKI01715482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaa170e61309ff42220551a62305db705ca6d811284e167dcdee203bb3e2379e. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/JPKI01715480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98e3a2826bf1421dedf07dbfb0fcee7ead24b0bd08e9a34c9cefab204dfccb99. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/JPKI01711377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31ab9852eddfa2fe036993b7b164c10a75576eb0ed73780f4a6e480f5476af9d. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/JPKI01711376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x482c1a758cf8ae89436094b34f9af14636a3b373edfbcc18cf128abcb0fd751c. 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/JPKI01715481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08187ef089feed18941e94344f934955c1a094bf9de80b10d5399be10c71eede. 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/JPKI01618466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc14cdfedf86c4ea7060877df1714a4f7f2a55e1a071ebb3da665165f78cf1985. 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/JPKI01715482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bf064b658d95eb1a161034494a0a96bf9a9f28d86081b1d2652212828e6e1f8. 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/JPKI01618468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56b337930ee2208a77d642cc662baa4e35fa50225cbc1df8ee9e3215a2a1c90d. 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/JPKI01716523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e43ee6b538d93a1b687efe7eb45e9207ec72e4b7b027db7a7d9eaf7aae0bfa4. 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/JPKI01618467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98e3a2826bf1421dedf07dbfb0fcee7ead24b0bd08e9a34c9cefab204dfccb99. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/JPKI01711377.